WO2006054779A1 - 蓄電性ゴム並びにそれを用いた電気二重層キャパシタ及びリチウム電池 - Google Patents
蓄電性ゴム並びにそれを用いた電気二重層キャパシタ及びリチウム電池 Download PDFInfo
- Publication number
- WO2006054779A1 WO2006054779A1 PCT/JP2005/021493 JP2005021493W WO2006054779A1 WO 2006054779 A1 WO2006054779 A1 WO 2006054779A1 JP 2005021493 W JP2005021493 W JP 2005021493W WO 2006054779 A1 WO2006054779 A1 WO 2006054779A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rubber
- electrode
- active material
- battery
- storage rubber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/26—Electrodes characterised by their structure, e.g. multi-layered, porosity or surface features
- H01G11/28—Electrodes characterised by their structure, e.g. multi-layered, porosity or surface features arranged or disposed on a current collector; Layers or phases between electrodes and current collectors, e.g. adhesives
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/30—Electrodes characterised by their material
- H01G11/48—Conductive polymers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/30—Electrodes characterised by their material
- H01G11/50—Electrodes characterised by their material specially adapted for lithium-ion capacitors, e.g. for lithium-doping or for intercalation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/131—Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/133—Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/621—Binders
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/621—Binders
- H01M4/622—Binders being polymers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/624—Electric conductive fillers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/13—Energy storage using capacitors
Definitions
- the present invention relates to a power storage rubber and an electric double layer capacitor and a lithium battery using the same as an electrode, and more particularly to a technique for making a rubber a power storage rubber that functions as an electrode. Background technology.
- Secondary batteries and capacitors are devices that store electricity.
- secondary batteries are lead-acid batteries (SLI, power, stationary, and portable), nickel-powered Dome battery (open-type pocket type, open-type)
- SLI lead-acid batteries
- Dome battery open-type pocket type, open-type
- capacitors electric double layer capacitors, redox capacitors, etc. have been put into practical use.
- This lithium ion battery has a configuration in which a positive electrode and a negative electrode are disposed in a non-aqueous electrolyte solution, and a positive electrode active material or a negative electrode active material is bound to a current collector surface on each electrode plate. is there.
- the positive and negative electrode plates used in this battery are generally kneaded in a solvent with an active material (positive electrode active material or negative electrode active material), conductive material (electroconductive dispersion material), binder (binder), etc. Dispersed into a mixture, applied to one or both sides of the current collector, dried, and then pressed as necessary, and then slit into a predetermined shape.
- PVDF polyvinylidene fluoride
- Patent Document 1 Japanese Unexamined Patent Publication No. 2000-133275
- Patent Document 2 Japanese Patent Laid-Open No. 2000-2 28 1 9 7
- Patent Document 3 Japanese Patent Application Laid-Open No. 2002-1 1 0 1 45
- Patent Document 4 Japanese Unexamined Patent Application Publication No. 2004-55493
- Patent Document 5 Japanese Patent Application Laid-Open No. 2004-288 782
- the elastomer binder for the electrode is non-rigid and highly malleable, so it deteriorates.
- the active material from detaching it is possible to maintain the contact between the active material particles ”(paragraph [0036] of Patent Document 1),
- the binder (rubber) is the It can contain only about 10% by mass (Patent Document 1, Claim 23, Patent Document 2, Paragraph [0 0 3 0], Patent Document 3, Claims 1 to 4, Patent Document 4 Claims 1 and 9, and paragraph [0 0 2 9]) of Patent Document 5.
- “collecting powdered or granular electrode active materials” An electrode bound to a body, comprising a non-aqueous electrolyte and conductive powder, and an isocyanate compound comprising a polyol compound having two or more hydroxyl groups per molecule having an average molecular weight of 60 to 600
- Patent Document 6 Japanese Patent Application Laid-Open No. 11-9 7 0 26
- Patent Document 6 states that “Because the binder has almost no electron conductivity and ionic conductivity, the binder inhibits the oxidation-reduction reaction of the electrode active material.
- a polymer with a three-dimensional network structure hereinafter referred to as cross-linked A composition comprising an adhesive rubber-like compound containing a non-aqueous electrolyte solution (hereinafter referred to as a binder electrolyte solution) comprising an organic solvent in which conductive powder and electrolyte are dispersed and dissolved in a polymer).
- the binder is characterized in that the electrode active materials and the electrode active material and the current collector are bound to each other.
- the binder electrolyte is an ion. Conductivity, conductive powder is responsible for electronic conductivity " , “It has a binding function similar to that of a material used as a conventional binder, and has ionic conductivity and electronic conductivity not found in conventional materials” (paragraph [0 0 0 7]).
- the adhesive rubber-like compound is not a support, but an electrolyte (ion-conductive dispersion material), conductive powder (electronic Conductive dispersion material), electrode active material is not dispersed on the support.
- Patent Document 6 states that “the mixing ratio of the electrode active material and the binder composition varies depending on the type of the electrode active material used and the required mechanical strength, It is preferable that the binder is about 10 to 50 wt% with respect to the total amount of the electrode active material ”(paragraph [0 0 1 6]). More than conventional Although it is shown that the electrode active material is applied to the current collector and dried, the binder solution is applied onto the film (paragraph [0 0 2 2]) alone does not show that an electrode active material is kneaded with rubber to obtain a molded body mainly composed of a rubber-like binder.
- the above-mentioned conventional lithium battery and electric double layer capacitor employ a coating process in close contact with the current collector, so that the drying process is costly, and the current collector and compound (mixture) It was not possible to sufficiently solve the problems of adhesion to the substrate and separation due to expansion and contraction of the active material accompanying the reaction.
- the current collector since the current collector was responsible for maintaining the mechanical strength, there was a problem that the amount of active material in the battery could not be increased.
- a flammable organic solvent organic solvent
- the present invention is intended to solve the above problems, and by utilizing the adhesion and flexibility of rubber, it is mainly rubber and does not rely on a current collector to maintain mechanical strength.
- the problem is to obtain a storage rubber (electrode) and to obtain an electrode without using a coating process for the current collector.
- An electricity storage rubber characterized in that an ion conductive dispersion material and an electron conductive dispersion material are dispersed in a rubber support.
- a power storage rubber characterized in that pores through which an ion conductive liquid permeates are dispersed in a rubber support and an electron conductive dispersing material is dispersed.
- Ion conductive dispersion material Ion conductive dispersion material, electron conductive dispersion material and battery active material on rubber support It is an electricity storage rubber for electrodes characterized by being dispersed.
- An electricity storage rubber for an electrode characterized in that an electron conductive dispersion material and a battery active material are dispersed in a rubber support that does not contain a ionic conductive dispersion material.
- the rubber support is swelled by an organic solvent, so that the ionic conductive liquid penetrates and an ion path becomes possible.
- the electron conductive dispersion material is one or more carbon powders selected from acetylene black, ketjen black, and graphite powder.
- the electrode storage rubber according to any one of the above.
- Two or more kinds of electronically conductive dispersing material, ionic conductive dispersing material and battery active material are kneaded and dispersed in rubber, so the rubber has good adhesion and flexibility, so that it can adhere to the current collector. In addition, it has the effect of following the volume change of the active material accompanying charge / discharge. Thereby, rate characteristics and cycle characteristics can be improved.
- FIG. 1 is a diagram schematically showing a conventional battery structure and a battery structure of the rubber main role of the present invention.
- FIG. 2 is a diagram showing charge / discharge of the storage rubber 5 A / cm 2 (1 cyc 1 eg).
- FIG. 3 is a diagram showing charge / discharge of the storage rubber at 5 ⁇ A / cm 2 (2 cyc 1 eg).
- FIG. 4 is a diagram showing charge / discharge 1 ⁇ AZcm 2 (3 cyc 1 eg) of the storage rubber.
- FIG. 5 is a diagram (Example 2) showing a cyclic voltammogram (sweep speed 0.1 mV / sec) of the electricity storage rubber (without active material).
- FIG. 1 is a diagram (Example 1) showing lm V / sec).
- Figure 7 shows the crosscut test
- FIG. 8 is a diagram showing a triode cell fabricated for CV measurement using a storage rubber electrode as a sample electrode.
- FIG. 9 is a diagram showing the results of CV measurement of the electricity storage rubber electrode of Example 4.
- FIG. 10 is a view showing the results of CV measurement of the electricity storage rubber electrode of Example 5.
- FIG. 11 shows the results of CV measurement of the electricity storage rubber electrode of Example 6.
- FIG. 12 is a diagram showing the results of CV measurement of the electricity storage rubber electrode of Example 7.
- FIG. 13 shows the results of CV measurement of the electricity storage rubber electrode of Example 8.
- FIG. 14 is a diagram showing the results of CV measurement of the electricity storage rubber electrode of Example 9.
- FIG. 15 is a diagram showing the results of CV measurement of the electricity storage rubber electrode of Example 10.
- FIG. 16 is a diagram showing the results of CV measurement of the electricity storage rubber electrode of Example 11;
- FIG. 17 is a diagram showing the results of CV measurement of the electricity storage rubber electrode of Example 12;
- FIG. 18 is a diagram showing the results of CV measurement of the electricity storage rubber electrode of Example 13;
- FIG. 19 is a diagram showing the results of CV measurement of the electricity storage rubber electrode of Example 14;
- FIG. 20 is a diagram showing the results of CV measurement of the electricity storage rubber electrode of Example 15.
- FIG. 21 is a diagram showing the results of CV measurement of the electricity storage rubber electrode of Example 16;
- FIG. 22 is a diagram showing the results of CV measurement of the electricity storage rubber electrode of Example 17;
- FIG. 23 is a diagram showing the results of CV measurement of the electricity storage rubber electrode of Example 18;
- FIG. 24 is a diagram showing the results of CV measurement of the electricity storage rubber electrode of Example 19; (Explanation of symbols)
- the present inventors have discovered that it is possible to construct a battery having excellent rate characteristics and cycle characteristics by utilizing the adhesion and flexibility of rubber. .
- the electrode layer with a rubber support can be expected to increase the capacity of the battery in order to maintain mechanical strength. is there.
- ion conductive dispersion solid electrolyte
- electronic conductivity Dispersant conducting aid
- battery active material battery active material
- the rubber since the rubber is not a solid solvent but used as a support, it functions not as a solid electrolyte but as a battery electrode (positive electrode or negative electrode) mixture.
- a battery conductive material in which an ion conductive dispersion material and an electron conductive dispersion material are dispersed in a rubber support without dispersing the battery active material, or ion conductivity in the rubber support.
- the electricity storage rubber which is a dispersion of the pores through which the liquid penetrates and an electron conductive dispersion material, functions as an electrode of the electric double layer capacitor.
- the type of rubber is not limited, and conventionally used rubbers such as synthetic rubbers such as SBR and CR, heat resistant rubbers and elastomers can be used.
- synthetic rubbers such as SBR and CR
- heat resistant rubbers and elastomers can be used.
- EPDM ethylene propylene diene rubber
- H—NBR attalinoletri ⁇ butadiene rubber
- ACM acrylic rubber
- a lithium salt that dissolves in an organic solvent of an electrolyte solution of a non-aqueous electrolyte battery (lithium ion battery) and dissociates into an anion can be used.
- L i C 10 4 and L i PF 6 are preferred.
- the well dispersed ionic conductivity of the dispersed material is immersed in the electrolytic solution for lithium ion batteries, L i by organic solvent of the electrolyte solution C
- oxide ion conductor oxide ion conductor, halide ion conductor, proton conductor, lithium ion conductor, sodium ion conductor, silver ion conductor ON conductor, copper ion conductor, a— 60 L i S '4 0 S i S 2 amorphous material, L i 2 S— S i S 2 system melt quenched glass, L i 4 T i 2 ( P 0 4 ) 3 ⁇ A 1 P 0 4 ⁇ Tio 2 , P EO (polyethylene oxide), PAN (polyacrylonitrile), PMMA (polymethyl methacrylate), P PO (polypropylene oxide) and other solid electrolytes By using it, a fully solid lithium ion secondary battery that does not use organic electrolyte can be expected.
- This ion conductive dispersion material can also be used for electric double layer capacitors.
- an ionic conductive dispersion material such as Li C 1 O 4 or Li PF 6 dispersed in a rubber support in advance with an organic solvent, the pores into which the ionic conductive liquid permeates are dispersed. Can be obtained. It is preferable that the pores through which the ionic conductive liquid permeates are uniformly dispersed.
- a mixture of an electron-conductive dispersant and a battery active material kneaded with a water-extractable compound that does not function as an ion-conductive dispersant is placed in hot water, and the compound is added. Also by boiling extraction, it is possible to obtain a power storage rubber in which pores through which ionic conductive liquid permeates are dispersed. In this case, it is not necessary for the rubber to contain an ion conductive dispersing material that dissolves in an organic solvent.
- the rubber is made of a material that swells with an organic solvent, the ion conductive liquid penetrates by swelling and the ion conductive liquid penetrates, so that the ion conductive liquid penetrates. It is not necessary to disperse the pores.
- Examples of the ion conductive liquid that can permeate the electricity storage rubber include an electrolytic solution containing an organic solvent and a lithium salt (electrolyte) conventionally used as a nonaqueous electrolytic solution in a lithium battery.
- an electrolytic solution containing an organic solvent and a lithium salt (electrolyte) conventionally used as a nonaqueous electrolytic solution in a lithium battery.
- ionic conductive liquids examples include Li BFC (propylene carbonate), Li BF 4 / GBL ( ⁇ -butyrolacton), Li BF 4 / PC + DME (1,2-dimethoxetane), L i BF 4 / GB L + DME, L i BF ./PC + EMC (ethyl methyl carbonate), L i BF 4 / PC + MP (propionic acid meso Chill), L i C 1 O / PC, L i C l O 4 / GBL, L i C 1 O 4 / PC + DME, L i C 10 4 / PC + DME, L i C 1 O-ZG BL + DME, L i C 1 O 4 / PC + EMC, L i C 1 O 4 / PC + MP, L i PF 6 / PC, L i PF 6 / GBL, L i P Fe / GBL + DME, L i P Fe / PC + PC
- the electron conductive dispersing material carbon, metal (iron and steel, etc.), alloys, ceramics, glass powder or particles conventionally used as conductive aids for batteries can be used.
- carbon powder selected from acetylene black, ketjen black, and graphite powder is preferable. More preferred is a mixture of acetylene black and ketjen black, a mixture of graphite powder and ketjen black.
- the electron conductive dispersing material can be dispersed in an amount of 60 to 100 mass% with respect to 100 mass% of the rubber support. If the amount of the electron conductive dispersing material is small, it will not function as a battery, and if it is too large, kneading into rubber becomes difficult, so the above range is preferable.
- the battery active material is a positive electrode active material when the storage rubber according to the present invention is used as the positive electrode of the battery, but Li C o 0 2 and Li C r O 2 conventionally used for lithium batteries.
- L i N i O 2 , L i Mn O2, L i Mn 2 O 4 , L i V 2 0 4 , L i F e O 2 , L i VO 2 , L i T i 0 2 , L i S c Lithium transition metal composite oxides such as O 2 and Li Y0 2 can be used.
- Li Mn 2 O 4 is preferable.
- the battery active material (positive electrode active material) can be dispersed in an amount of 10 to 50% by mass with respect to 100% by mass of the rubber support. If the battery active material is small, it will not function as a battery, and if it is too much, the behavior as a battery will not be seen, so the above range is preferable.
- the positive electrode active material one having an average particle diameter of 10 to 30 m can be used.
- the battery active material becomes a negative electrode active material when the power storage rubber of the present invention is used as the negative electrode of the battery.
- synthetic graphite graphite
- natural graphite natural graphite
- non-graphite that have been conventionally used for lithium batteries.
- Carbonized, Amorphous cobalt-substituted lithium nitride, Amorphous tin composite oxide, SnO— B 2 O 3 — P 2 0 5 melt-quenched glass, Amorphous S i O 2 — S n O Lithium insertion materials or compounds such as amorphous amorphous materials can be used.
- the electric storage rubber according to any one of (1) to (3) of the present invention (one that does not disperse the battery active material) or the electric storage for electrode according to any one of (4) to (16)
- the conductive rubber (in which the battery active material is dispersed) can be made into an electric double layer capacitor or battery by adhering to the current collector.
- the current collector aluminum foil, stainless steel foil or the like can be used, and it can be bonded to the storage rubber by thermocompression bonding and using Z or rubber paste. In that case, it is preferable to use the same kind of rubber paste as that of the rubber support (power storage rubber).
- a coupling agent can be added to the rubber support and vulcanized and bonded to the current collector.
- vulcanization adhesion a method is adopted in which a current collector is placed on an unvulcanized electricity storage rubber, and primary vulcanization is performed by hot pressing, and the rubber is vulcanized and bonded to the current collector at the same time. it can.
- the hot pressing is preferably performed at 165-175 ° C for 8-12 minutes.
- rubber glue may or may not be used.
- the coupling agent a silane force coupling agent is preferable.
- the weight of the current collector can be reduced because the rubber bears the mechanical strength, and the electricity storage rubber (ionic conductive dispersion material,
- the mass ratio of the current collector to the electron conductive dispersion material can be 1 or less.
- Acrylic-tolyl butadiene rubber (H—NBR) is used as the raw rubber, and 40 wt% ionic conductive dispersion (L i C 10 4 ), 90 wt% compared to 100 wt% rubber.
- 40 wt% positive electrode active material (L i Mn 2 O 4 ), knead in an open gate, and vulcanize at 180 ° C for 10 minutes A power storage rubber sheet was obtained.
- the electricity storage rubber sheet was cut out into a 1 cm ⁇ 1 cm test tube, 1 Om 1 of PC (manufactured by Kishida Chemical Co., Ltd.) was added, and the test tube was covered with a silicon rubber cap. Thereafter, it was treated for 6.0 hours with an ultrasonic cleaner (10:00 W4 2 KHz, yamato 2 5 1 0).
- This stainless steel foil S US 3 0 4, two Rako
- This stainless steel foil (S US 3 0 4, two Rako) 1 cm 2 area entrapment has the electrolyte and (L i C 1 0 4 / PC + DME) immersed as set by the sample electrode in.
- a charge / discharge test was performed using the sample electrodes obtained in Example 1 and Example 2.
- the reference electrode was Li / Li +
- the counter electrode was metallic lithium.
- the current density was 5 A / cm 2 and 1 ⁇ A / cm 2
- the cut-off potential was 2.8 to 4.4 V (vs L i no L i + ).
- Figure 2 shows the charge / discharge of the storage rubber at 5 ⁇ A / cm 2 (1 cyc 1 e).
- Example 1 X-axis time (s), Y-axis potential (V), and charge / discharge of sample electrode (with active material) in Example 1 0 seconds 3.2 2.3 V, 10 seconds 4.2 V, 20 seconds 4. 2 8 V, 30 seconds 4. 3 3 V, 40 seconds 4. 3 7 V, 50 seconds 4. 4 V, 60 seconds 3. 2 2 V, 70 seconds 2. 8 2 V, 7 2 seconds 2.8 V. 0 second for charge / discharge of sample electrode (no active material) in Example 2. 3. 16 V, 10 seconds 4. 25 V, 20 seconds 4. 34 V, 30 seconds 4.4 V, 40 Sec 3.1 2 V, 4 8 sec 2.8 V.
- Figure 3 shows the charge / discharge of the storage rubber at 5 ⁇ A / cm 2 (2 cyc 1 eg).
- charge / discharge of the sample electrode (with active material) in Example 1 is 0 seconds 3. 15 V, 10 seconds 4. 1 7 V, 20 seconds 4. 35 V, 30 seconds 3. 8 V, 4 8 seconds 2.8 V.
- Charge / discharge of the sample electrode of Example 2 (without active material) 0 seconds 3. 1 3, 1 0 seconds 4. 2 2 V, 2 0 seconds 3. 8 5 V, 3 0 seconds 3.3 2 V, 4 It was 0 seconds 2. 8 2 V, 4 2 seconds 2.8 V.
- Figure 4 shows the charge and discharge of the storage rubber 1 ⁇ ⁇ cm 2 (3 cyc 1 eg).
- charge / discharge of the sample electrode (with active material) of Example 1 is 0 second 3. 12 V, 20 seconds 3. 6 6 V, 60 seconds 3. 8 9 V, 24 0 seconds 4.2 3 V, 5 20 seconds 4.3 V, 1 2 60 seconds 4.4 V, 1 2 70 seconds 3.93 V, 1 2 80 seconds 3.66 8 V, 1 300 seconds 3. 4 2 V, 1 3 2 0 seconds 3. 2 8 V, 1 3 5 0 seconds 3. 1 0 V, 1 4 8 0 seconds 2.8 V.
- charge and discharge of the sample electrode (without active material) in Example 2 0 seconds 3. 1 2 V, .5 seconds 3. 4 2 V, 1 0 seconds 3. 6 V, 3 0 seconds 3. 8 8 V, 7 0 sec 4. IV, 24 0 sec 4.
- FIG. 5 shows the cyclic voltammogram (sweep speed 0. l mVZ sec) of the electricity storage rubber (without active material) of Example 2.
- the potential is 3 V
- the current is 1 from 0 ⁇ A.
- FIG. 6 shows the cyclic voltammogram (sweep speed 0. l mVZ sec) of the electricity storage rubber (with active material) of Example 1. 3. From 1 I V to 4.0 4 V, the current was 0 ⁇ A, for 4.4 ⁇ 4 V, 0 ⁇ ⁇ ⁇ and 0.5 ⁇ , and for 4.6 V, 0.8 ⁇ . From these results, it is considered that the electricity storage rubber of the present invention has battery characteristics and operates as a battery electrode.
- a cross force test was conducted to examine the adhesion between the sample and the aluminum foil.
- a 1 cm square was cut into 1 mm width and 1 mm width, and a cellophane tape (N I CH I BAN: trade name, manufactured by Nichiban) was applied and tested (see Fig. 7).
- Example 4 As a result of performing a cross-cut test on the sample of Example 3, the rubber remaining amount after the test was 100%. Therefore, in general, it was confirmed that it has sufficient adhesion to an aluminum material that is preferable as a current collector because of its characteristics. That is, in the present invention, it is possible to follow the deformation of the current collector, so that sufficient adhesion can be ensured, a peeling problem hardly occurs, and a flexible electrode can be obtained.
- H—NBR H—NBR is used as the raw rubber, and the active material (L i Mn 2 0 4 ) and electron-conducting dispersive material (acetylene black and ketjen black) force rubber 1 00 wt%, L i ⁇ : 40 wt%, AB and K :: 90 wt% (AB 80 ⁇ KB 10 ratio)
- Add silane coupling agent and knead with open roll to make unvulcanized rubber sheet 1 Primary vulcanization was carried out by hot pressing at 70 ° for 1 minute. This electrical storage rubber sheet was baked on aluminum foil that had been subjected to alkaline degreasing and coated with rubber paste in an oven at 1 80 ° C. After that, the samples were bonded by thermocompression bonding, followed by secondary vulcanization in an oven at 150 ° C. for 1 hour to obtain a sample.
- G Graphite powder
- AB electron conductive dispersion material
- G and KB 75 wt% (ratio of G 55 ⁇ KB 20)
- a sample was obtained in the same manner as Example 4 except for kneading.
- Example 8 A sample was obtained in the same manner as in Example 6 except that EPDM was used as the raw rubber.
- Example 8 A sample was obtained in the same manner as in Example 6 except that EPDM was used as the raw rubber.
- a method of vulcanization and adhesion without thermocompression bonding as an adhesion method that is, by placing an aluminum foil that has been subjected to alkali degreasing on an unvulcanized rubber sheet and hot pressing at 170 ° C for 10 minutes
- a sample was obtained in the same manner as in Example 7 except that the primary vulcanization was performed and the method of adhering to the aluminum foil at the same time as vulcanizing the rubber was adopted.
- Example 1 For using H- NBR as a raw material rubber, by pulverizing i Mn 2 ⁇ 4 as an active material that was used was the average particle diameter 2 m, when the wearing vulcanization, the rubber cement in aluminum foil A sample was obtained in the same manner as in Example 8 except that it was applied.
- Example 1 0 For using H- NBR as a raw material rubber, by pulverizing i Mn 2 ⁇ 4 as an active material that was used was the average particle diameter 2 m, when the wearing vulcanization, the rubber cement in aluminum foil A sample was obtained in the same manner as in Example 8 except that it was applied.
- Example 1 0 For using H- NBR as a raw material rubber, by pulverizing i Mn 2 ⁇ 4 as an active material that was used was the average particle diameter 2 m, when the wearing vulcanization, the rubber cement in aluminum foil A sample was obtained in the same manner as in Example 8 except that it was applied.
- Example 1 0 For using H- NBR as a raw material rubber
- Example 1 1 A sample was obtained in the same manner as in Example 9 except that EPDM was used as the raw rubber.
- Example 1 1 A sample was obtained in the same manner as in Example 9 except that EPDM was used as the raw rubber.
- Example 1 2 Adhesion method is vulcanization adhesion without thermocompression bonding, that is, primary vulcanization is carried out by placing alkali degreased aluminum foil on unvulcanized rubber sheet and heat pressing at 70 ° C for 10 minutes.
- a sample was obtained in the same manner as in Example 5 except that a method was employed in which the rubber was vulcanized and the method of adhering to the aluminum foil at the same time was adopted.
- Example 14 A sample was obtained in the same manner as in Example 12 except that a rubber paste was applied to the aluminum foil during vulcanization adhesion.
- Example 15 A sample was obtained in the same manner as in Example 12 except that Li Mn 20 4 was pulverized to an average particle size of 2 ⁇ m as the active material.
- Example 15
- Example 16 A sample was obtained in the same manner as in Example 13 except that i Mn 2 0 was pulverized to an average particle size of 2 ⁇ m as the active material.
- i Mn 2 0 was pulverized to an average particle size of 2 ⁇ m as the active material.
- Adhesion method is vulcanization adhesion without thermocompression bonding, that is, primary vulcanization is carried out by placing alkali degreased aluminum foil on unvulcanized rubber sheet and heat pressing at 70 ° C for 10 minutes.
- a sample was obtained in the same manner as in Example 4 except that a method was used in which the rubber was vulcanized and the method of adhering to the aluminum foil at the same time was adopted.
- Example 18 A sample was obtained in the same manner as in Example 16 except that 100% by weight of rubber was added so that Li Mn 2 O 4 : 50 wt%.
- Example 18 A sample was obtained in the same manner as in Example 16 except that 100% by weight of rubber was added so that Li Mn 2 O 4 : 50 wt%.
- a sample was obtained in the same manner as in Example 16 except that it was added so that AB and KB were 70 wt% (ratio of AB 60 ⁇ KB 10) with respect to 100 wt% of rubber.
- Example 16 A sample was obtained in the same manner as in Example 16 except that 100 wt% of rubber was added so that AB and KB were 50 wt% (ratio of AB 45 ⁇ KB 5).
- Table 1 summarizes the materials and manufacturing methods of the samples prepared in Examples 1 to 19 and Comparative Example 1.
- Examples 4 to 19 and samples prepared in Comparative Example 1 were used as sample electrodes, and a tripolar cell as shown in FIG. 8 was prepared and CV measurement was performed.
- Sweep range 2.8 V or 3.0 V to 4.4 V (changed according to natural potential)
- Figures 9 to 24 show the results of CV measurements performed on samples prepared in Examples 4 to 19 as described above.
- the electricity storage rubber of the present invention has battery characteristics and is operating as a battery electrode.
- the content of the electrode active material is 50 mass. / 0 and even if many, were found to function as an electrode even if 1 0 wt% and less, 40 wt
- the content of the electron conductive dispersant (conducting aid) is 70 mass as shown in Figure 24 (using the sample of Example 19). Even when the amount was reduced to 0 , the manganese peak could be confirmed, indicating that it functions as a battery. When the content of the conductive additive was 50% by mass (Comparative Example 1), no behavior as a battery was observed.
- the electricity storage rubber of the present invention functions as a capacitor and a battery electrode, it can be used for electric double layer capacitors, lithium batteries and the like.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
Claims
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004336442 | 2004-11-19 | ||
| JP2004-336442 | 2004-11-19 | ||
| JP2005-330465 | 2005-11-15 | ||
| JP2005330465A JP4901189B2 (ja) | 2004-11-19 | 2005-11-15 | 蓄電性ゴム及びそれを用いたリチウム電池 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006054779A1 true WO2006054779A1 (ja) | 2006-05-26 |
Family
ID=36407309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2005/021493 Ceased WO2006054779A1 (ja) | 2004-11-19 | 2005-11-17 | 蓄電性ゴム並びにそれを用いた電気二重層キャパシタ及びリチウム電池 |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4901189B2 (ja) |
| WO (1) | WO2006054779A1 (ja) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9401525B2 (en) | 2009-03-20 | 2016-07-26 | Semiconductor Energy Laboratory Co., Ltd. | Power storage device and manufacturing method thereof |
| US9768467B2 (en) | 2013-04-19 | 2017-09-19 | Semiconductor Energy Laboratory Co., Ltd. | Secondary battery and a method for fabricating the same |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008147177A (ja) * | 2006-11-16 | 2008-06-26 | Yamagata Univ | リチウムイオン二次電池 |
| JP2008285658A (ja) * | 2007-04-16 | 2008-11-27 | Shinano Kenshi Co Ltd | 炭素粉配合ゴム組成物とその製造方法 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1154124A (ja) * | 1997-08-07 | 1999-02-26 | Jsr Corp | リチウム二次電池用バインダー組成物 |
| JPH1197026A (ja) * | 1997-09-19 | 1999-04-09 | Mitsubishi Heavy Ind Ltd | Li電池用電極 |
| JPH11213753A (ja) * | 1997-11-21 | 1999-08-06 | Jsr Corp | 高分子固体電解質とそれを用いた非水電池 |
| JP2000133275A (ja) * | 1998-10-26 | 2000-05-12 | Mitsubishi Chemicals Corp | エラストマ―バインダ―含有電極および当該電極を使用した電池ならびにそれらの製造方法 |
| JP2004288782A (ja) * | 2003-03-20 | 2004-10-14 | Nippon Zeon Co Ltd | 電気化学キャパシタ電極用バインダー組成物 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH067496B2 (ja) * | 1987-03-27 | 1994-01-26 | 日本合成ゴム株式会社 | 固体電気化学素子 |
| JP2000223373A (ja) * | 1999-02-03 | 2000-08-11 | Nec Corp | 分極性電極及びその製造方法並びに分極性電極を用いた電気二重層コンデンサ及びその製造方法 |
| JP3436189B2 (ja) * | 1999-06-21 | 2003-08-11 | 日本電気株式会社 | 電気二重層コンデンサおよびその製造方法 |
| JP2001332456A (ja) * | 2000-05-24 | 2001-11-30 | Lion Corp | 電気二重層キャパシタ |
| JP2001351611A (ja) * | 2000-06-02 | 2001-12-21 | Mitsubishi Chemicals Corp | リチウム二次電池用正極材料、リチウム二次電池用正極及びリチウム二次電池 |
| JP2002157998A (ja) * | 2000-11-17 | 2002-05-31 | Yuasa Corp | 固体型リチウム二次電池用複合正極の製造方法及び該正極を用いた固体型リチウム二次電池 |
| JP2002270174A (ja) * | 2001-03-09 | 2002-09-20 | Hitachi Maxell Ltd | 電気化学素子 |
-
2005
- 2005-11-15 JP JP2005330465A patent/JP4901189B2/ja not_active Expired - Fee Related
- 2005-11-17 WO PCT/JP2005/021493 patent/WO2006054779A1/ja not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1154124A (ja) * | 1997-08-07 | 1999-02-26 | Jsr Corp | リチウム二次電池用バインダー組成物 |
| JPH1197026A (ja) * | 1997-09-19 | 1999-04-09 | Mitsubishi Heavy Ind Ltd | Li電池用電極 |
| JPH11213753A (ja) * | 1997-11-21 | 1999-08-06 | Jsr Corp | 高分子固体電解質とそれを用いた非水電池 |
| JP2000133275A (ja) * | 1998-10-26 | 2000-05-12 | Mitsubishi Chemicals Corp | エラストマ―バインダ―含有電極および当該電極を使用した電池ならびにそれらの製造方法 |
| JP2004288782A (ja) * | 2003-03-20 | 2004-10-14 | Nippon Zeon Co Ltd | 電気化学キャパシタ電極用バインダー組成物 |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9401525B2 (en) | 2009-03-20 | 2016-07-26 | Semiconductor Energy Laboratory Co., Ltd. | Power storage device and manufacturing method thereof |
| US9590277B2 (en) | 2009-03-20 | 2017-03-07 | Semiconductor Energy Laboratory Co., Ltd. | Power storage device and manufacturing method thereof |
| US9768467B2 (en) | 2013-04-19 | 2017-09-19 | Semiconductor Energy Laboratory Co., Ltd. | Secondary battery and a method for fabricating the same |
| US11005123B2 (en) | 2013-04-19 | 2021-05-11 | Semiconductor Energy Laboratory Co., Ltd. | Secondary battery and a method for fabricating the same |
| US11594752B2 (en) | 2013-04-19 | 2023-02-28 | Semiconductor Energy Laboratory Co., Ltd. | Secondary battery and a method for fabricating the same |
| US11923499B2 (en) | 2013-04-19 | 2024-03-05 | Semiconductor Energy Laboratory Co., Ltd. | Secondary battery and a method for fabricating the same |
| US12362381B2 (en) | 2013-04-19 | 2025-07-15 | Semiconductor Energy Laboratory Co., Ltd. | Secondary battery and a method for fabricating the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4901189B2 (ja) | 2012-03-21 |
| JP2006173583A (ja) | 2006-06-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101917745B1 (ko) | 고체 전지용 전극과 이의 제조방법, 이를 포함하는 고체 전지, 및 이를 제조하기 위한 고체 전지용 접착 필름 | |
| CN107732293B (zh) | 类三明治结构固态聚合物电解质膜的制备方法及其在固态锂离子电池中的应用 | |
| CN104393290B (zh) | 一种采用MoS2为正极材料的铝离子电池及其制备方法 | |
| CN108258236A (zh) | 一种高比容量高循环寿命18650圆柱锂电池及其制备方法 | |
| CN103078076B (zh) | 复合隔离膜及使用此隔离膜的锂离子电池 | |
| JP5418860B2 (ja) | 電池用電極の製造方法 | |
| CN110518283A (zh) | 全固态二次电池及其制备工艺、电动汽车 | |
| TW201842700A (zh) | 電極片、全固態電池、電極片的製造方法以及全固態電池的製造方法 | |
| WO2000024077A1 (en) | Molded solid electrolyte, molded electrode, and electrochemical element | |
| CN1641921A (zh) | 能量器件 | |
| CN110661032A (zh) | 一种固态电解质薄膜及其应用 | |
| CN101630728A (zh) | 一种高能量密度锂二次电池电极及其制备方法 | |
| JP6989265B2 (ja) | 電池の製造方法 | |
| WO2017217079A1 (ja) | 全固体電池 | |
| Liu et al. | Influence of binder on impedance of lithium batteries: a mini-review | |
| WO2023109400A1 (zh) | 极片、电芯及电池 | |
| JP7677326B2 (ja) | 蓄電デバイス | |
| JP6115786B2 (ja) | 二次電池用負極の製造方法 | |
| JP3508514B2 (ja) | 有機電解質電池 | |
| CN106602064A (zh) | 碘掺杂石墨烯的制备方法及其应用 | |
| CN115579454A (zh) | 一种硫化物固态电解质复合固态正极及固态电池 | |
| CN115799622A (zh) | 一种复合固态电解质颗粒及其制备方法和应用 | |
| WO2006054779A1 (ja) | 蓄電性ゴム並びにそれを用いた電気二重層キャパシタ及びリチウム電池 | |
| JP5553169B2 (ja) | リチウムイオン二次電池 | |
| JP4161437B2 (ja) | リチウム電池 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS KE KG KM KN KP KR KZ LC LK LR LS LT LU LV LY MA MD MG MK MN MW MX MZ NA NG NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
| AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU LV MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
| WWE | Wipo information: entry into national phase |
Ref document number: 200580039813.0 Country of ref document: CN |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 05809723 Country of ref document: EP Kind code of ref document: A1 |