WO2024058052A1 - イオン伝導性物質、電解質、及び電池 - Google Patents
イオン伝導性物質、電解質、及び電池 Download PDFInfo
- Publication number
- WO2024058052A1 WO2024058052A1 PCT/JP2023/032723 JP2023032723W WO2024058052A1 WO 2024058052 A1 WO2024058052 A1 WO 2024058052A1 JP 2023032723 W JP2023032723 W JP 2023032723W WO 2024058052 A1 WO2024058052 A1 WO 2024058052A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ion conductive
- mol
- conductive material
- metal element
- content
- 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
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G25/00—Compounds of zirconium
- C01G25/006—Compounds containing zirconium, with or without oxygen or hydrogen, and containing two or more other elements
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/26—Phosphates
- C01B25/45—Phosphates containing plural metal, or metal and ammonium
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G25/00—Compounds of zirconium
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/06—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances
-
- 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
-
- 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
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0561—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of inorganic materials only
- H01M10/0562—Solid materials
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/50—Solid solutions
- C01P2002/52—Solid solutions containing elements as dopants
- C01P2002/54—Solid solutions containing elements as dopants one element only
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
- C01P2002/72—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0065—Solid electrolytes
- H01M2300/0068—Solid electrolytes inorganic
-
- 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
Definitions
- the present disclosure relates to ionically conductive materials, electrolytes, and batteries.
- Solid electrolytes have attracted attention as electrolytes used in electrochemical devices such as lithium ion batteries (Patent Documents 1 to 4).
- Solid electrolytes have superior high-temperature durability and high-voltage resistance compared to conventional electrolytes, so they are useful for improving battery performance such as safety, high capacity, rapid charging and discharging, and pack energy density. It is believed that.
- solid electrolytes of lithium and halides containing metal elements other than lithium are known as materials used for solid electrolytes of lithium ion batteries.
- Halide solid electrolytes are highly flexible, so they do not require sintering, and they do not emit harmful substances such as H 2 S, so they are highly safe. It has no advantages.
- halide solid electrolytes still have room for improvement in ionic conductivity.
- the present disclosure has been made in view of the above-mentioned circumstances, and aims to provide an ion conductive material with excellent ionic conductivity, as well as an electrolyte and a battery using the same.
- the present disclosure includes the following embodiments [1] to [6].
- [1] Contains an alkali metal element, a tetravalent metal element M, a halogen element, a dopant element , in the X-ray diffraction chart obtained by measurement using CuK ⁇ rays at 25°C, the ionic conductivity has a diffraction peak with a half-width of 2.0 to 10° in the 2 ⁇ angle range of 10 to 20°. material.
- [2] Contains an amorphous phase and crystallites dispersed in the amorphous phase, and also contains an alkali metal element, a tetravalent metal element M, a halogen element, a dopant element An ion conductive material having an average equivalent circular diameter of 20 nm or less. [3] The ion conductive material of [1] or [2], wherein the dopant element is at least one of P and S.
- the content of the alkali metal element is 20 to 30 mol%, the content of the metal element M is 5 to 20 mol%, and the halogen
- a battery comprising the electrolyte according to [5].
- FIG. 1 is a diagram showing X-ray diffraction charts obtained for Examples 1 to 6 and Comparative Examples 1 to 3.
- FIG. 2 is a graph showing the Arrhenius plots obtained for the ion-conductive materials of Examples 3, 5 and 6 and Comparative Examples 1 to 3.
- FIG. 3 is a TEM image of the ion conductive material of Example 3.
- FIG. 4 is a graph showing the results of cyclic voltammetry of Examples 1 to 5 and Comparative Example 1.
- FIG. 5 is a graph showing the charge/discharge test results of Example 1.
- the ion conductive substance (alkali metal-containing halide) of this embodiment contains an alkali metal element, a tetravalent metal element M (also referred to as element M), a halogen element, a dopant element X, and an oxygen element, and , satisfies at least one of the following (1) and (2).
- the content of the dopant element It has a diffraction peak with a half width of 2.0 to 10°.
- the half width of the diffraction peak may be 4.0 to 9.0°, may be 4.5 to 8.8°, or may be 5.0 to 8.7°. . Note that in this specification, unless otherwise specified, the half width is the full width at half maximum (FWHM).
- the ionically conductive material can be said to have a sea-island structure.
- the average particle diameter of the crystallites may be 15 nm or less, 10 nm or less, or 6 nm or less. Further, the thickness may be 1 nm or more, or may be 2 nm or more.
- the average particle diameter of the crystallites may be, for example, the average value of equivalent circle diameters calculated from the area of the crystallites in a microscopic image obtained by a transmission electron microscope. The average may be the average for all crystals recognized by the method described in the Examples within a field of view (eg, 188.6 nm x 188.6 nm).
- the alkali metal element contained in the ion conductive material of this embodiment may be any of Li, Na, K, Rb, and Cs, and may contain at least one of Li, Na, and K, and Li and It may contain at least one of Na and may contain Li.
- the proportion of one type of alkali metal element may be 80 mol% or more, 90 mol% or more, or 95 mol% or more.
- the one kind of alkali metal element may be at least one of Li, Na, and K, it may be at least one of Li and Na, and it may be Li.
- the content of the alkali metal element in the ion conductive substance may be 20 to 30 mol%, 22 to 28 mol%, 24 to 27 mol%, based on the total amount of atoms contained in the ion conductive substance. It may be mol%.
- Examples of the element M include Zr, Ti, and Hf.
- Element M may contain at least one of Zr and Hf, and may contain Zr.
- the ion conductive material may contain one or more types of tetravalent metal element M.
- the content of the tetravalent metal in the ion conductive substance may be 5 to 20 mol%, 8 to 16 mol%, 8 to 16 mol%, based on the total amount of atoms contained in the ion conductive substance. It may be 15 mol%, and it may be 9 to 13 mol%.
- Element M may include Zr and Hf.
- the content of Zr may be 70 mol% or more, may be 80 mol% or more, may be 85 mol% or more, and may be 90 mol%. It may be more than that.
- the content of Zr may be 99.9 mol% or less, may be 99 mol% or less, may be 98 mol% or less, and may be 97 mol% or less. It may be mol% or less, and may be 95 mol% or less.
- the ion conductive substance may contain a metal element M2 other than tetravalent (however, excluding an alkali metal element).
- the metal element M2 may be at least one of divalent, trivalent, or pentavalent metal elements.
- divalent metals include alkaline earth metals, Zn, and the like.
- Trivalent metal elements include Sc, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Yb, Lu, Y, Al, Ga, In, Bi, and Sb. can be mentioned.
- Examples of pentavalent metal elements include Nb and Ta.
- the alkaline earth metal may be at least one of Mg, Ca, Sr, and Ba, at least one of Mg and Ca, or Mg.
- the content of M2 may be 30 mol% or less, and may be 20 mol% or less with respect to the total amount of metal elements other than alkali metals contained in the ion conductive material (total amount of element M and element M2).
- the content may be 15 mol% or less, and may be 10 mol% or less.
- the content of M2 may be 0.1 mol% or more, 1 mol% or more, 2 mol% or more based on the total amount of divalent to tetravalent metal elements contained in the ion conductive substance. It may be 2 mol% or more, 3 mol% or more, or 5 mol% or more.
- the halogen element contained in the ion conductive material of this embodiment may be any of F, Cl, Br, and I, and may contain at least one of Cl, Br, and I; It may contain at least one of Br and may contain Cl.
- the ion conductive material may contain only one type of halogen element, or may contain two or more types of halogen elements.
- the content of the halogen element in the ion conductive material may be 40 to 60 mol%, 43 to 55 mol%, 45 to 52 mol%, based on the total amount of atoms contained in the ion conductive material. It may be %.
- the dopant element X contained in the ion conductive material of this embodiment may be an element capable of forming a tetrahedral structure XO 4 with four oxygen atoms, and may be at least one of P and S.
- the dopant element X may contain P.
- the dopant element X may contain S.
- the content of the dopant element X in the ion conductive material may be 0.05 to 5 mol %, 0.1 to 3 mol %, 0.2 to 2 mol %, or 0.3 to 1 mol %, based on the total amount of atoms contained in the ion conductive material.
- the content of the dopant element X in the ion-conductive material may be 50 mol % or less, 1 to 30 mol %, 1 to 20 mol %, or 2 to 10 mol % of the content of the tetravalent metal element M.
- the content of the dopant element X in the ion-conductive material may be 20 mol % or less, 15 mol % or less, 10 mol % or less, or 8 mol % or less of the content of the tetravalent metal element M.
- the content of the dopant element X in the ion-conductive material may be 1 to 10 mol %, or may be 2 to 6 mol %, of the content of the oxygen element.
- the content of oxygen element in the ion conductive substance may be 5 to 20 mol%, 8 to 18 mol%, 10 to 16 mol%, based on the total amount of atoms contained in the ion conductive substance. It may be %.
- the ion conductive material of this embodiment may include a compound (also referred to as an alkali metal-containing halide) represented by the following compositional formula (1).
- A is an alkali metal element
- M is the above-mentioned tetravalent metal element M
- X is the above-mentioned dopant element X
- Z is a halogen element, 1.5 ⁇ 3, 0.5 ⁇ ⁇ 2, 0.005 ⁇ 0.5, 3 ⁇ 6, 0.5 ⁇ 2.
- ⁇ may be 1.8 ⁇ 2.5, 1.9 ⁇ 2.3, and 1.95 ⁇ 2.2.
- the upper and lower limits for ⁇ can be arbitrarily combined.
- ⁇ may be 0.7 ⁇ 1.4, 0.8 ⁇ 1.2, and 0.9 ⁇ 1.1.
- the upper and lower limits for ⁇ can be arbitrarily combined. ⁇ may be 0.01 ⁇ 0.2, 0.02 ⁇ 0.15, and 0.025 ⁇ 0.10.
- the upper and lower limits for ⁇ can be arbitrarily combined. ⁇ may be 3.5 ⁇ 5, 3.7 ⁇ 4.3, and 3.8 ⁇ 4.1.
- the upper and lower limits for ⁇ can be arbitrarily combined.
- ⁇ may be 0.7 ⁇ 1.5, 0.8 ⁇ 1.3, and 0.9 ⁇ 1.2.
- the upper and lower limits for ⁇ can be arbitrarily combined.
- E is an element other than A, M, X, Z, and O, and may be an element added or mixed in other than the essential elements. Examples of E include C, B, and N.
- ⁇ may be from 0 to 0.1, may be from 0 to 0.01, may be from 0 to 0.001, and may be substantially zero.
- the ion conductive substance of the present embodiment may include a compound (also referred to as an alkali metal-containing halide) represented by the following compositional formula (2).
- A is an alkali metal element
- M is the above-mentioned tetravalent metal element M
- M2 is a metal element other than tetravalent M2 (excluding the alkali metal element)
- X is the above-mentioned dopant.
- Elements X and Z are halogen elements.
- Preferred ranges for each of ⁇ , ⁇ , ⁇ , ⁇ , and ⁇ in Formula (2) may be the same ranges as those exemplified as the ranges for ⁇ , ⁇ , ⁇ , ⁇ , and ⁇ in Formula (1).
- ⁇ may be 0.01 ⁇ 0.3, 0.03 ⁇ 0.2, and 0.05 ⁇ 0.15.
- the upper and lower limits for ⁇ can be arbitrarily combined.
- E is an element other than A, M, M 2 , X, Z, and O, and may be an element added or mixed in other than the essential elements. Examples of E include C, B, and N.
- ⁇ may be from 0 to 0.1, may be from 0 to 0.01, may be from 0 to 0.001, and may be substantially zero.
- the activation energy of the ion conductive material of this embodiment may be 0.35 eV or less, may be 0.33 eV or less, and may be 0.23 to 0.35 eV.
- the activation energy of an ion conductive substance is determined by measuring the ionic conductivity ⁇ at five points (25 °C, 40 °C, 60 °C, 80 °C, and 100 °C) within the temperature range of 25 °C to 100 °C. , can be determined by performing curve fitting based on the following calculation formula.
- ⁇ T Aexp(-E a /k b T)
- ⁇ ionic conductivity (S/cm)
- T absolute temperature (K)
- A frequency factor
- E a activation energy
- k b Boltzmann's constant.
- a graph (Arrhenius plot) with ⁇ on the vertical axis and 1000/T (T is absolute temperature) on the horizontal axis can be created.
- the method for producing the ion conductive material of this embodiment is not particularly limited, but includes, for example, a production method that includes a step of ball milling raw materials.
- the raw material is not particularly limited.
- examples of the alkali metal source include alkali metal halides, alkali metal oxides, and the like.
- examples of the metal element M source include halides of metal element M.
- examples of the source of metal element M2 include halides of metal element M2.
- the dopant element X source may be a compound such as a salt of XO 4 ion and an alkali metal. It is preferable to mix the raw materials before performing ball milling, and it is more preferable to mix them under an inert atmosphere (for example, Ar atmosphere).
- the conditions of the ball mill are not particularly limited, but may be 10 to 100 hours at a rotation speed of 200 to 700 rpm.
- the milling time may be from 1 hour to 72 hours, may be from 12 to 60 hours, and may be from 20 to 60 hours.
- the balls used in the ball mill are not particularly limited, but zirconia balls can be used.
- the size of the ball to be used is not particularly limited, but balls of 2 mm to 10 mm can be used.
- the product (ion conductive material) obtained by ball milling is not annealed.
- annealing is performed, crystallites grow and become coarse, and the above-mentioned effects may not be obtained. Examples of annealing include heating the product after ball milling at 100°C or higher, 150°C or higher, or 200°C or higher.
- the ion conductive substance of this embodiment can be used, for example, as a material for electrochemical devices such as capacitors and batteries.
- electrolyte (solid electrolyte) materials examples include electrolyte (solid electrolyte) materials.
- the battery examples include batteries such as lithium ion batteries and sodium ion batteries that charge and discharge by moving alkali metal ions between a positive electrode and a negative electrode.
- the ion conductive material of this embodiment may be included in the positive electrode or negative electrode of the battery.
- a lithium ion battery includes a positive electrode, a negative electrode, and an electrolyte (solid electrolyte) disposed between the positive electrode and the negative electrode.
- the ion conductive material (alkali metal-containing halide (in this case, a lithium-containing halide)) of this embodiment may be included in the electrolyte of a lithium ion battery.
- the positive electrode of a lithium ion battery is not particularly limited, and may contain a positive electrode active material and, if necessary, a conductive additive, a binder, and the like.
- the positive electrode may be one in which a layer containing these materials is formed on a current collector.
- a lithium-containing composite metal oxide containing lithium (Li) and at least one transition metal selected from the group consisting of V, Cr, Mn, Fe, Co, Ni, and Cu is used.
- Examples of such lithium composite metal oxides include LiCoO 2 , LiNiO 2 , LiMn 2 O 4 , Li 2 MnO 3 , LiNix Mny Co 1-x-y O 2 (0 ⁇ x+y ⁇ 1]), LiNix Co y Al 1-x-y O 2 [0 ⁇ x+y ⁇ 1]), LiCr 0.5 Mn 0.5 O 2 , LiFePO 4 , Li 2 FeP 2 O 7 , LiMnPO 4 , LiFeBO 3 , Li 3
- Examples include V 2 (PO 4 ) 3 , Li 2 CuO 2 , Li 2 FeSiO 4 , Li 2 MnSiO 4 and the like.
- the negative electrode of a lithium ion battery is not particularly limited, and may contain a negative electrode active material and, if necessary, a conductive aid, a binder, etc.
- a negative electrode active material such as Li, Si, P, Sn, Si-Mn, Si-Co, Si-Ni, In, and Au, alloys or composites containing these elements, carbon materials such as graphite, and carbon materials such as graphite. Examples include materials in which lithium ions are inserted between layers.
- the material of the current collector is not particularly limited, and may be a single metal or an alloy of metals such as Cu, Mg, Ti, Fe, Co, Ni, Zn, Al, Ge, In, Au, Pt, Ag, and Pd.
- the solid electrolyte layer may have multiple layers.
- a structure including a sulfide solid electrolyte layer may be used.
- a structure having a sulfide solid electrolyte layer between the solid electrolyte containing the ion conductive material of this embodiment and the negative electrode may be used.
- the sulfide solid electrolyte is not particularly limited, but includes, for example, Li 6 PS 5 Cl, Li 2 S-PS 5 , Li 10 GeP 2 S 12 , Li 9.6 P 3 S 12 , Li 9.54 Si 1. 74 P 1.44 S 11.7 Cl 0.3 , Li 3 PS 4 and the like.
- Example 1 ⁇ Ball mill In an argon atmosphere with a dew point of -70°C or lower (hereinafter referred to as dry argon atmosphere), 0.1334 g of Li 2 O, 1.0407 g of ZrCl 4 , and 0.0259 g of Li 3 PO 4 were weighed. , prepared the raw materials. The above raw materials were put into a 50 ml zirconia pot for a planetary ball mill described below, and 65 g of 4 mm diameter zirconia balls were added thereto. The ion conductive material of Example 1 was obtained by treating it mechanochemically at 300 rpm for 24 hours.
- the ball mill was operated in a mode in which the ball mill was stopped for 1 minute after every 10 minutes of rotation, and the direction of rotation was alternately switched between clockwise and counterclockwise.
- the charged composition of the obtained ion conductive material was Li2.15ZrCl4O ( PO4 ) 0.05 .
- Planetary ball mill device PM 400 manufactured by Verder Scientific Co., Ltd.
- Example 2 An ion conductive material was produced in the same manner as in Example 1, except that the ball milling was carried out for 48 hours.
- Example 3 An ion conductive material was produced in the same manner as in Example 1, except that the blending ratio of the raw materials was changed to have the charging composition shown in Table 2.
- Example 4 An ion conductive material was produced in the same manner as in Example 1, except that Li 2 SO 4 was used instead of Li 3 PO 4 and the blending ratio of the raw materials was changed to have the charging composition shown in Table 2.
- Example 5 Ion conduction was carried out in the same manner as in Example 1, except that Li 2 O, ZrCl 4 , HfCl 4 , and Li 3 PO 4 were used as raw materials, and the blending ratio of the raw materials was changed so that the charging composition was as shown in Table 2. manufactured a sexual substance.
- Example 6 Ion conduction was carried out in the same manner as in Example 1, except that Li 2 O, ZrCl 4 , MgCl 2 , and Li 3 PO 4 were used as raw materials, and the blending ratio of the raw materials was changed so that the charging composition was as shown in Table 2. manufactured a sexual substance.
- Example 7 Ion conduction was carried out in the same manner as in Example 1, except that Li 2 O, ZrCl 4 , MgCl 2 , and Li 3 PO 4 were used as raw materials, and the blending ratio of the raw materials was changed so that the charging composition was as shown in Table 2. manufactured a sexual substance.
- Example 1 An ion conductive material was produced in the same manner as in Example 1, except that LiCl and ZrCl 4 were used as the raw materials, and the blending ratio of the raw materials was changed to have the charging composition shown in Table 2.
- Example 2 An ion conductive material was produced in the same manner as in Example 1, except that LiCl, Li 2 O, and ZrCl 4 were used as raw materials, and the blending ratio of the raw materials was changed to have the composition shown in Table 2.
- FIG. 1 is a diagram showing X-ray diffraction charts obtained for the ion conductive materials of Examples 1 to 6 and Comparative Examples 1 to 3. The half-width of the peak was determined by removing the background signal and performing fitting.
- a pressure molding die including a frame, a punch lower part, and a punch upper part was prepared.
- the frame mold was made of insulating polycarbonate.
- both the punch upper part and the punch lower part were made of electronically conductive stainless steel, and were electrically connected to terminals of an impedance analyzer (Solatron Analytical, Sl1260).
- the ion conductivity of the ion conductive material was measured using the pressure molding die according to the method described below. First, in a dry argon atmosphere, powder of an ion-conductive substance was filled onto the lower part of a punch inserted into the hollow part of the frame from vertically below. Then, by pushing the upper part of the punch into the hollow part of the frame from above, a pressure of 370 MPa was applied to the powder of the ion conductive material inside the pressure molding die. After pressure is applied, the punch is tightened and fixed from above and below with a jig, and while a constant pressure is maintained, the ion conductive material is measured by electrochemical impedance measurement using the above impedance analyzer. Impedance was measured.
- a Cole-Cole diagram was created from the impedance measurement results.
- the real value of impedance at the measurement point where the absolute value of the phase of complex impedance was the smallest was regarded as the resistance value of the ion conductive material to ion conduction.
- the resistance value was calculated based on the following mathematical formula (III). The results are shown in Table 2.
- ⁇ (R SE ⁇ S/t) -1 ...(III) here, ⁇ is the ionic conductivity, S is the contact area of the ion conductive material with the upper part of the punch (equal to the cross-sectional area of the hollow part of the frame), R SE is the resistance value of the solid electrolyte material in impedance measurement, t is the thickness of the ion conductive material when pressure is applied.
- FIG. 2 is a graph showing Arrhenius plots obtained for the ion conductive materials of Examples 3, 5, and 6 and Comparative Examples 1 to 3. In FIG. 2, the two points in Example 6 with the smallest 1000/T value and the two points in Example 3 with the smallest 1000/T value almost overlapped.
- FIG. 3 shows a TEM image of the ion conductive material of Example 3. As shown in FIG. 3, it was found that a sea-island structure was formed in which the island structure was a crystalline phase and an amorphous ocean structure was formed to surround it.
- the crystal corresponding to the specific diffraction spot in the surrounding area in real space can be imaged brighter than the amorphous phase.
- FIG. 3 the part surrounded by a white circle is the crystal phase.
- the image was colored to make the brightly imaged portion clear, and each crystal phase was numbered. In this way, the spatial distribution of crystal phases was investigated. Further, regarding the crystal phase, when a total of 51 crystal grains in the field of view in the figure were analyzed, the average equivalent circle diameter of the crystal phase was 4.5 nm.
- a cell for cyclic voltammetry was prepared as described below. Note that the cyclic voltammetry cell was prepared in a glove box purged with inert gas. First, the ion conductive material of Example 1 was placed in an insulating tube with an inner diameter of 10 mm. A pressure of 370 MPa was applied to the ion conductive material to form a solid electrolyte layer (layer of the ion conductive material). Next, 60 mg of In foil was placed in contact with and covering the solid electrolyte layer, and 2 mg of Li foil was placed in contact with and covering the In foil to obtain a laminate.
- a pressure of 370 MPa was applied to the laminate to form a reference electrode made of a Li--In alloy on the solid electrolyte layer. Furthermore, a disc-shaped plate made of stainless steel and having a diameter of 10 mm and a thickness of 0.1 mm was placed in contact with and covering the first solid electrolyte layer to obtain a laminate. A pressure of 370 MPa was applied to the obtained laminate to form a working electrode made of stainless steel on the solid electrolyte layer. A current collector made of stainless steel was attached to the reference and working electrodes, and then leads were attached to the current collector. All components were placed in a sealed desiccator within a glove box. A cell for cyclic voltammetry was thus obtained.
- ⁇ Cyclic voltammetry test> Regarding the above cyclic voltammetry cell, the reference electrode and working electrode were electrically connected to an impedance analyzer Sl1260 and a potentiostat Sl1287A, and a cyclic voltammetry test was conducted under the following conditions. That is, in the cyclic voltammetry test, the sweep rate was set to 1 mV/s, and the value of the current flowing when the potential of the working electrode was changed with respect to the reference electrode (Li + /Li-In) was measured. First, the potential of the working electrode with respect to the reference electrode was increased to 5.5V starting from the open circuit voltage, and then turned back and decreased to 0V.
- FIG. 4 is a graph showing the results of cyclic voltammetry of Examples 1 to 5 and Comparative Example 1. Compared to Comparative Example 1, the ion conductive materials of Examples 1 and 2 have an expanded potential window toward the low potential side, and can be said to have improved stability.
- the ion conductive material of Example 6 LiNi 1/3 Mn 1/3 Co 1/3 O 2 , and acetylene black were weighed at 29 parts by mass, 67 parts by mass, and 4 parts by mass, respectively, A mixture was obtained by mixing in a mortar.
- an insulating tube with an inner diameter of 10 mm 100 mg of the ion conductive material of Example 1 and 15 mg of the above mixture were stacked in order to obtain a laminate.
- a pressure of 370 MPa was applied to the laminate to form a first electrode (layer of the above mixture) and a first solid electrolyte layer (layer of the ion conductive material).
- Example 1 60 mg of sulfide solid electrolyte Li 6 PS 5 Cl was placed in contact with the first solid electrolyte layer to obtain a laminate. A pressure of 370 MPa was applied to the laminate to form a second solid electrolyte layer. The first solid electrolyte layer was sandwiched between the first electrode and the second solid electrolyte layer. Next, 60 mg of In foil was placed in contact with the second solid electrolyte layer, and 2 mg of Li foil was further placed in contact with the In foil to obtain a laminate. A pressure of 370 MPa was applied to the laminate to form a second electrode. A current collector made of stainless steel was attached to the first and second electrodes, and then a lead wire was attached to the current collector. All the members were placed in a desiccator and sealed, and thus the secondary battery of Example 1 was obtained.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Electrochemistry (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Conductive Materials (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Secondary Cells (AREA)
Abstract
Description
[1]アルカリ金属元素、4価の金属元素M、ハロゲン元素、ドーパント元素X、及び酸素元素を含有し、ドーパント元素Xの含有量は金属元素Mの含有量に対して50モル%以下であり、25℃においてCuKα線を用いて測定して得られたX線回折チャートにおいて、2θ角が10~20°の範囲に半値幅が2.0~10°である回折ピークを有する、イオン伝導性物質。
[2]アモルファス相と、当該アモルファス相に分散された結晶子とを含むと共に、アルカリ金属元素、4価の金属元素M、ハロゲン元素、ドーパント元素X、及び酸素元素を含有し、前記結晶子の平均円相当径が20nm以下である、イオン伝導性物質。
[3]前記ドーパント元素が、P及びSの少なくとも一方である、[1]又は[2]のイオン伝導性物質。
[4]前記イオン伝導性物質中に含まれる原子の総量に対して、アルカリ金属元素の含有量が20~30モル%であり、金属元素Mの含有量が5~20モル%であり、ハロゲン元素の含有量が40~60モル%であり、ドーパント元素Xの含有量が0.05~5モル%である、[1]~[3]のいずれか一つのイオン伝導性物質。
[5][1]~[4]のいずれか一つのイオン伝導性物質を含む、電解質。
[6][5]に記載の電解質を含む、電池。
(1)ドーパント元素Xの含有量は金属元素Mの含有量に対して50モル%以下であり、25℃においてCuKα線を用いて測定したX線回折チャートにおいて、2θ角が10~20°の範囲に半値幅が2.0~10°である回折ピークを有する。
(2)アモルファス相と、当該アモルファス相に分散された結晶子とを含み、結晶子の平均粒子径が20nm以下である。
イオン伝導性物質におけるドーパント元素Xの含有量は、4価の金属元素Mの含有量の50モル%以下であってよく、1~30モル%であってよく、1~20モル%であってよく、2~10モル%であってよい。イオン伝導性物質におけるドーパント元素Xの含有量は、4価の金属元素Mの含有量の20モル%以下であってよく、15モル%以下であってよく、10モル%以下であってよく、8モル%以下であってよい。
イオン伝導性物質におけるドーパント元素Xの含有量は、酸素元素の含有量の1~10モル%であってよく、2~6モル%であってよい。
AαMβXγZδEηOε・・・(1)
(式中、Aはアルカリ金属元素であり、Mは上述の4価の金属元素M、Xは上述のドーパント元素X、Zはハロゲン元素であり、1.5≦α≦3、0.5≦β≦2、0.005≦γ≦0.5、3≦δ≦6、0.5≦ε≦2である。)
αは、1.8≦α≦2.5であってよく、1.9≦α≦2.3であってよく、1.95≦α≦2.2であってよい。αについての上限と下限とは任意に組み合わせることができる。
βは、0.7≦β≦1.4であってよく、0.8≦β≦1.2であってよく0.9≦β≦1.1であってよい。βについての上限と下限とは任意に組み合わせることができる。
γは、0.01≦γ≦0.2であってよく、0.02≦γ≦0.15であってよく、0.025≦γ≦0.10であってよい。γについての上限と下限とは任意に組み合わせることができる。
δは、3.5≦δ≦5であってよく、3.7≦δ≦4.3であってよく、3.8≦δ≦4.1であってよい。δについての上限と下限とは任意に組み合わせることができる。
εは、0.7≦ε≦1.5であってよく、0.8≦ε≦1.3であってよく、0.9≦ε≦1.2であってよい。εについての上限と下限とは任意に組み合わせることができる。
Eは、A、M、X、Z及びO以外の元素であって、必須元素以外に添加又は混入した元素であってよい。Eとしては、例えば、C、B、N等が挙げられる。ηは0~0.1であってよく、0~0.01であってよく、0~0.001であってよく、実質的に0であってもよい。
AαMβM2 ζXγZδEηOε・・・(2)
(式中、Aはアルカリ金属元素であり、Mは上述の4価の金属元素M、M2は4価以外の金属元素M2(ただしアルカリ金属元素を除く)であり、Xは上述のドーパント元素X、Zはハロゲン元素である。)
式(2)におけるα、β、γ、δ及びεのそれぞれについて好ましい範囲は、式(1)においてα、β、γ、δ及びεの範囲として例示したものと同様の範囲であってよい。
ζは、0.01≦ζ≦0.3であってよく、0.03≦ζ≦0.2であってよく、0.05≦ζ≦0.15であってよい。ζについての上限と下限とは任意に組み合わせることができる。
Eは、A、M、M2、X、Z及びO以外の元素の元素であって、必須元素以外に添加又は混入した元素であってよい。Eとしては、例えば、C、B、N等が挙げられる。ηは0~0.1であってよく、0~0.01であってよく、0~0.001であってよく、実質的に0であってもよい。
式:σT=Aexp(-Ea/kbT)
ここで、σはイオン伝導度(S/cm)、Tは絶対温度(K)、Aは頻度因子、Eaは活性化エネルギー、kbはボルツマン定数を表す。
また、縦軸にσ、横軸に1000/T(Tは絶対温度)を取ったグラフ(アレーニウスプロット)を作成することができる。
ボールミルに用いるボールとしては、特に限定はされないが、ジルコニアボールを用い得ることができる。用いるボールの大きさとしては特に限定はされないが、2mm~10mmのボールを用いることができる。
ボールミルを上記の時間で行うことで充分に各原料が混合され、メカノケミカル反応が促進されることによって、得られる化合物のイオン伝導度を向上させることが可能である。
リチウムイオン電池の正極としては、特に限定されず、正極活物質を含み、且つ必要に応じて導電助剤、結合剤等を含むものであってよい。
正極は、これらの材料を含む層が集電体上に形成されたものであってよい。正極活物質としては、例えば、リチウム(Li)と、V、Cr、Mn、Fe、Co、Ni、Cuからなる群から選択される少なくとも1種の遷移金属とを含むリチウム含有複合金属酸化物が挙げられる。このようなリチウム複合金属酸化物としては、例えば、LiCoO2、LiNiO2、LiMn2O4、Li2MnO3、LiNixMnyCo1-x-yO2[0<x+y<1])、LiNixCoyAl1-x-yO2[0<x+y<1])、LiCr0.5Mn0.5O2、LiFePO4、Li2FeP2O7、LiMnPO4、LiFeBO3、Li3V2(PO4)3、Li2CuO2、Li2FeSiO4、Li2MnSiO4などが挙げられる。
・ボールミル
-70℃以下の露点を有するアルゴン雰囲気中(以下、乾燥アルゴン雰囲気と記載する)で、Li2Оを0.1334g、ZrCl4を1.0407g、Li3PО4を0.0259g秤量し、原料を用意した。
下記の遊星ボールミル用の50mlの容積のジルコニアポットに上記原料を入れ、直径4mmのジルコニアボールを65g投入した。24時間、300rpmの条件でメカノケミカル的に反応するように処理することにより、実施例1のイオン伝導性物質を得た。
ボールミルは、10分間回転させる毎に、インターバルとして1分間停止させ、回転方向を時計回りと反時計回り交互に切り替えるモードで実施した。得られたイオン伝導性物質(リチウム含有塩化物)の仕込み組成は、Li2。15ZrCl4О(PО4)0.05である。
遊星ボールミル装置:ヴァーダー・サイエンティフィック株式会社製 PM 400
ボールミルを48時間行ったこと以外は、実施例1と同様にイオン伝導性物質を製造した。
表2の仕込み組成となるように原料の配合比を変更したこと以外は、実施例1と同様にイオン伝導性物質を製造した。
Li3PO4に代えてLi2SO4を使用し、表2の仕込み組成となるように原料の配合比を変更したこと以外は、実施例1と同様にイオン伝導性物質を製造した。
原料として、Li2О、ZrCl4、HfCl4、及びLi3PО4を用いて、表2の仕込み組成となるように原料の配合比を変更したこと以外は、実施例1と同様にイオン伝導性物質を製造した。
原料として、Li2О、ZrCl4、MgCl2、及びLi3PО4を用いて、表2の仕込み組成となるように原料の配合比を変更したこと以外は、実施例1と同様にイオン伝導性物質を製造した。
原料として、Li2О、ZrCl4、MgCl2、及びLi3PО4を用いて、表2の仕込み組成となるように原料の配合比を変更したこと以外は、実施例1と同様にイオン伝導性物質を製造した。
原料として、LiCl、及びZrCl4を用いて、表2の仕込み組成となるように原料の配合比を変更したこと以外は、実施例1と同様にイオン伝導性物質を製造した。
原料として、LiCl、Li2O及びZrCl4を用いて、表2の仕込み組成となるように原料の配合比を変更したこと以外は、実施例1と同様にイオン伝導性物質を製造した。
原料として、Li2O及びZrCl4を用いて、表2の仕込み組成となるように配合比を調整した原料にボールミルを行って得られた生成物に200℃で5時間アニーリングを行ったこと以外は、実施例1と同様にイオン伝導性物質を製造した。
Li3PO4に代えてLi2SO4を使用し、表2の仕込み組成となるように原料の配合比を変更したこと以外は、実施例1と同様にイオン伝導性物質を製造した。
得られたイオン伝導性物質について、25℃での粉末X線回折測定により、2θで10~20°の範囲内に観測された回折ピークの評価を行った。結果を表2に示す。粉末X線回折測定の測定条件について、下記の条件にて実施した。
測定装置: Ultima IV (株式会社 リガク 製)
X線発生器: CuKα線源 電圧40kV、電流40mA
X線検出器: シンチレーションカウンター又は半導体検出器
測定範囲: 回折角2θ=5°~80°
スキャンスピード:4°/分
図1は実施例1~6及び比較例1~3のイオン伝導性物質について得られたX線回折チャートを示す図である。
ピークの半値幅はバックグラウンドシグナルを除去し、フィッティングを行うことで求めた。
枠型、パンチ下部及びパンチ上部を備える加圧成形ダイスを用意した。なお、枠型は、絶縁性ポリカーボネートから形成されていた。また、パンチ上部及びパンチ下部は、いずれも、電子伝導性のステンレスから形成されており、インピーダンスアナライザー(Solatron Analytical社製 Sl1260)の端子にそれぞれ電気的に接続されていた。
σ=(RSE×S/t)-1・・・(III)
ここで、
σはイオン伝導度であり、
Sは、イオン伝導性物質のパンチ上部との接触面積(枠型の中空部の断面積に等しい)であり、
RSEは、インピーダンス測定における固体電解質材料の抵抗値であり、
tは、圧力が印加された際のイオン伝導性物質の厚みである。
装置:分析電子顕微鏡 ARM200F 日本電子株式会社製
測定条件: 加速電圧 200kV
試料調整:集束イオンビーム(FIB)により、クライオスタットによる冷却を行いながら、不活性雰囲気中で加工
図3に、実施例3のイオン伝導性物質のTEM像を示す。図3に示すように、島構造を結晶相とし、それを取り囲むようにアモルファス相の海構造が形成された、海島構造が形成されていることが分かった。ここで、透過型電子顕微鏡観察で得られる電子回折図形において、回折斑点が制限視野の絞り内に存在する結晶について結像させることによって、特定の回折斑点に対応する結晶を、実空間上で周囲のアモルファス相よりも明るく結像させることができる。これにより実空間上における結晶相の分布が分かる。図3において、白い丸で囲んだ部分が結晶相である。
図3において、明るく結像した部分が明確になるように画像に着色を行い、各結晶相についてナンバリングした。このようにして結晶相の空間分布について調べた。
また、結晶相について、図中の視野中の合計51個の結晶粒について解析を行ったところ、結晶相の平均円相当径は4.5nmであった。
以下に説明するとおり、サイクリックボルタンメトリー用セルの作製を行った。なお、サイクリックボルタンメトリー用セルの作製は、不活性気体で置換したグローブボックス内で行った。
まず、内径10mmの絶縁性の筒の中に実施例1のイオン伝導性物質を入れた。当該イオン伝導性物質に、370MPaの圧力を印加し、固体電解質層(上記イオン伝導性物質の層)が形成された。
次に、60mgのIn箔を固体電解質層に接触し且つ覆うように配置し、さらにLi箔2mgをIn箔と接触し且つ覆うように配置し、積層体を得た。当該積層体に370MPaの圧力を印加し、固体電解質層上にLi-In合金からなる参照電極が形成された。
さらに、ステンレス鋼から成る直径10mm、厚み0.1mmの円板状の板を第1の固体電解質層に接触し且つ覆うように配置し、積層体を得た。得られた積層体に370MPaの圧力を印加し、固体電解質層上にステンレス鋼からなる作用電極が形成された。
ステンレス鋼で形成された集電体が参照電極及び作用電極に取り付けられ、次いで、当該集電体にリード線が取り付けられた。全ての部材は、グローブボックス内で密閉されたデシケータ中に配置された。このようにしてサイクリックボルタンメトリー用セルが得られた。
上記のサイクリックボルタンメトリー用セルについて、参照電極と作用電極とをインピーダンスアナライザーSl1260、及びポテンショスタットSl1287Aとに電気的に接続し、以下の条件でサイクリックボルタンメトリー試験を実施した。
すなわち、サイクリックボルタンメトリー試験では、掃引速度を1mV/sとし、参照電極(Li+/Li-In)に対して作用電極の電位を変化させた際に流れる電流値を計測した。
まず、参照電極に対して作用電極の電位を、開回路電圧を始点として5.5Vまで昇圧した後に折り返し、0Vまで降圧した。
なお、サイクリックボルタンメトリー試験は、室温(25℃)で行った。0.5μA以上の還元電流が観測された電位を計測し、電気化学的安定性の指標とした。結果を表2に示す。
図4は、実施例1~5、及び比較例1のサイクリックボルタンメトリーの結果を示すグラフである。比較例1と比べて実施例1及び2のイオン伝導性物質は、低電位側に電位窓が拡張しており、安定性が向上していると言える。
内径10mmの絶縁性の筒の中で、実施例1のイオン伝導性物質を100mg、上記の混合物を15mgを順に積層して、積層体を得た。積層体に370MPaの圧力を印加し、第1電極(上記混合物の層)及び第1の固体電解質層(上記イオン伝導性物質の層)が形成された。
次に、第1の固体電解質層に、硫化物固体電解質Li6PS5Clを接触させるようにして60mg入れ、積層体を得た。積層体に370MPaの圧力を印加し、第2の固体電解質層が形成された。第1の固体電解質層は、第1の電極と第2の固体電解質層に挟まれていた。
次に、第二の固体電解質層にIn箔60mg、を接触させるようにして入れ、さらにLi箔2mgをIn箔と接触させるように入れ、積層体を得た。積層体に370MPaの圧力を印加し、第2電極が形成された。
ステンレス鋼で形成された集電体が第1電極及び第2電極に取り付けられ、次いで、当該集電体にリード線が取り付けられた。全ての部材はデシケータ中に配置され、密閉されており、このようにして実施例1の二次電池が得られた。
充放電試験機としては、下記の製品を用いて実施した。
充放電試験機:東洋システム株式会社 TOSCAT-3100
25℃において、0.1C、1C及び3Cの3通りのCレートで充放電試験を実施した。
それぞれのCレートにおける放電容量は、表1の通りである。
定電流定電圧(CCCV充電)で、それぞれのCレートに対応した電流密度で3.7Vまで充電を行った。それぞれのCレートに対応した電流密度を表1に示す。
放電は、それぞれのCレートに対応した電流密度で、1.9Vまで放電した。
図5に実施例1の充放電試験結果を、表1に、実施例1の各Cレートにおける放電容量を示す。
実施例1において、いずれのCレートにおいても高い放電容量が得られた。
Claims (6)
- アルカリ金属元素、4価の金属元素M、ハロゲン元素、ドーパント元素X、及び酸素元素を含有し、ドーパント元素Xの含有量は金属元素Mの含有量に対して50モル%以下であり、
25℃においてCuKα線を用いて測定して得られたX線回折チャートにおいて、2θ角が10~20°の範囲に半値幅が2.0~10°である回折ピークを有する、イオン伝導性物質。 - アモルファス相と、当該アモルファス相に分散された結晶子とを含むと共に、アルカリ金属元素、4価の金属元素M、ハロゲン元素、ドーパント元素X、及び酸素元素を含有し、
前記結晶子の平均円相当径が20nm以下である、イオン伝導性物質。 - 前記ドーパント元素が、P及びSの少なくとも一方である、請求項1又は2に記載のイオン伝導性物質。
- 前記イオン伝導性物質中に含まれる原子の総量に対して
アルカリ金属元素の含有量が20~30モル%であり、
金属元素Mの含有量が5~20モル%であり、
ハロゲン元素の含有量が40~60モル%であり、
ドーパント元素Xの含有量が0.05~5モル%である、請求項1又は2に記載のイオン伝導性物質。 - 請求項1又は2に記載のイオン伝導性物質を含む、電解質。
- 請求項5に記載の電解質を含む、電池。
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020257007629A KR20250068624A (ko) | 2022-09-12 | 2023-09-07 | 이온 전도성 물질, 전해질 및 전지 |
| CN202380064590.1A CN119856235A (zh) | 2022-09-12 | 2023-09-07 | 离子导电性物质、电解质及电池 |
| EP23865407.3A EP4571786A1 (en) | 2022-09-12 | 2023-09-07 | Ion conductive substance, electrolyte, and battery |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2022144851A JP7595621B2 (ja) | 2022-09-12 | 2022-09-12 | イオン伝導性物質、電解質、及び電池 |
| JP2022-144851 | 2022-09-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024058052A1 true WO2024058052A1 (ja) | 2024-03-21 |
Family
ID=90274890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2023/032723 Ceased WO2024058052A1 (ja) | 2022-09-12 | 2023-09-07 | イオン伝導性物質、電解質、及び電池 |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP4571786A1 (ja) |
| JP (1) | JP7595621B2 (ja) |
| KR (1) | KR20250068624A (ja) |
| CN (1) | CN119856235A (ja) |
| WO (1) | WO2024058052A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024204182A1 (ja) * | 2023-03-31 | 2024-10-03 | Tdk株式会社 | 電極及び全固体電池 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014022319A (ja) * | 2012-07-23 | 2014-02-03 | Toyota Industries Corp | 二次電池用負極活物質、その製造方法、二次電池用負極、二次電池、及びSi−酸化物固体電解質複合体 |
| WO2021002064A1 (ja) | 2019-07-04 | 2021-01-07 | パナソニックIpマネジメント株式会社 | 電池 |
| WO2021024785A1 (ja) | 2019-08-07 | 2021-02-11 | Tdk株式会社 | 固体電解質、固体電解質層および固体電解質電池 |
| JP6947321B1 (ja) | 2021-03-01 | 2021-10-13 | Tdk株式会社 | 電池及び電池の製造方法 |
| WO2021220577A1 (ja) | 2020-04-30 | 2021-11-04 | パナソニックIpマネジメント株式会社 | 固体電解質材料およびそれを用いた電池 |
| WO2022009935A1 (ja) * | 2020-07-07 | 2022-01-13 | Agc株式会社 | リチウムイオン二次電池に用いられる硫化物系固体電解質、及びその製造方法並びにリチウムイオン二次電池 |
-
2022
- 2022-09-12 JP JP2022144851A patent/JP7595621B2/ja active Active
-
2023
- 2023-09-07 CN CN202380064590.1A patent/CN119856235A/zh active Pending
- 2023-09-07 KR KR1020257007629A patent/KR20250068624A/ko active Pending
- 2023-09-07 EP EP23865407.3A patent/EP4571786A1/en active Pending
- 2023-09-07 WO PCT/JP2023/032723 patent/WO2024058052A1/ja not_active Ceased
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014022319A (ja) * | 2012-07-23 | 2014-02-03 | Toyota Industries Corp | 二次電池用負極活物質、その製造方法、二次電池用負極、二次電池、及びSi−酸化物固体電解質複合体 |
| WO2021002064A1 (ja) | 2019-07-04 | 2021-01-07 | パナソニックIpマネジメント株式会社 | 電池 |
| WO2021024785A1 (ja) | 2019-08-07 | 2021-02-11 | Tdk株式会社 | 固体電解質、固体電解質層および固体電解質電池 |
| WO2021220577A1 (ja) | 2020-04-30 | 2021-11-04 | パナソニックIpマネジメント株式会社 | 固体電解質材料およびそれを用いた電池 |
| WO2022009935A1 (ja) * | 2020-07-07 | 2022-01-13 | Agc株式会社 | リチウムイオン二次電池に用いられる硫化物系固体電解質、及びその製造方法並びにリチウムイオン二次電池 |
| JP6947321B1 (ja) | 2021-03-01 | 2021-10-13 | Tdk株式会社 | 電池及び電池の製造方法 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024204182A1 (ja) * | 2023-03-31 | 2024-10-03 | Tdk株式会社 | 電極及び全固体電池 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4571786A1 (en) | 2025-06-18 |
| JP2024040037A (ja) | 2024-03-25 |
| KR20250068624A (ko) | 2025-05-16 |
| CN119856235A (zh) | 2025-04-18 |
| JP7595621B2 (ja) | 2024-12-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7435452B2 (ja) | 硫化物固体電解質の製造方法、硫化物固体電解質、全固体電池、及び硫化物固体電解質の製造に用いる原料化合物の選択方法 | |
| JP6611949B2 (ja) | 固体電解質用材料 | |
| EP4001218A1 (en) | Solid ion conductor compound, solid electrolyte comprising the same, electrochemical cell comprising the same, and method of preparing the same | |
| JP7099475B2 (ja) | 非水系電解質二次電池用正極活物質、非水系電解質二次電池用正極活物質の製造方法 | |
| JP7174875B1 (ja) | リチウム含有塩化物及びその製造方法、並びに固体電解質及び電池 | |
| JP2019125547A (ja) | 固体電解質粉末、並びにそれを用いてなる電極合材及び全固体ナトリウムイオン二次電池 | |
| JP7174181B1 (ja) | リチウム含有塩化物及びその製造方法、並びに固体電解質及び電池 | |
| JP7595621B2 (ja) | イオン伝導性物質、電解質、及び電池 | |
| EP3715332A1 (en) | Tungsten trioxide | |
| JP7629040B2 (ja) | アルカリ金属含有ハロゲン化物、電解質、電池及びハロゲン化物固体電解質の製造方法 | |
| EP4600971A1 (en) | Ion conductive substance, electrolyte, and battery | |
| EP4376145A2 (en) | Solid electrolyte having excellent moisture stability and method for preparing same | |
| WO2024058053A1 (ja) | アルカリ金属含有ハロゲン化物、電解質、電池及びハロゲン化物固体電解質の製造方法 | |
| WO2025033470A1 (ja) | イオン伝導性物質、固体電解質、及び電池 | |
| EP4607642A1 (en) | Battery and laminate | |
| WO2025033471A1 (ja) | イオン伝導性物質、固体電解質、電池 | |
| EP4604246A1 (en) | Battery | |
| JP7173275B2 (ja) | リチウムイオン二次電池用正極活物質、リチウムイオン二次電池用正極活物質の製造方法、リチウムイオン二次電池 | |
| JP2025019577A (ja) | リチウムイオン二次電池用正極活物質、リチウムイオン二次電池用正極活物質の製造方法、リチウムイオン二次電池 | |
| Zhang | Solid Electrolytes and Interface Design for High-Performance All-Solid-State Batteries | |
| Hao | Materials and Interfacial Engineering for High-Performance All-Solid-State Batteries | |
| CN120153494A (zh) | 负极材料、负极和电池 | |
| Reichardt | Lithium chromium-based polyanions and derivatives as multiple-redox electrode materials in Li-ion batteries |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 23865407 Country of ref document: EP Kind code of ref document: A1 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 202380064590.1 Country of ref document: CN |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2023865407 Country of ref document: EP |
|
| ENP | Entry into the national phase |
Ref document number: 2023865407 Country of ref document: EP Effective date: 20250312 |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| WWP | Wipo information: published in national office |
Ref document number: 202380064590.1 Country of ref document: CN |
|
| WWP | Wipo information: published in national office |
Ref document number: 2023865407 Country of ref document: EP |