CN102800848A - Preparation method of nickel hydrogen electrode - Google Patents
Preparation method of nickel hydrogen electrode Download PDFInfo
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- CN102800848A CN102800848A CN2012103158465A CN201210315846A CN102800848A CN 102800848 A CN102800848 A CN 102800848A CN 2012103158465 A CN2012103158465 A CN 2012103158465A CN 201210315846 A CN201210315846 A CN 201210315846A CN 102800848 A CN102800848 A CN 102800848A
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- substrate
- nickel
- active material
- conductive agent
- electrode
- Prior art date
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 239000001257 hydrogen Substances 0.000 title claims abstract description 26
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 26
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 229910052759 nickel Inorganic materials 0.000 title claims abstract description 12
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000000758 substrate Substances 0.000 claims abstract description 33
- 239000011149 active material Substances 0.000 claims abstract description 19
- 239000006258 conductive agent Substances 0.000 claims abstract description 17
- 239000011248 coating agent Substances 0.000 claims abstract description 16
- 238000000576 coating method Methods 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 13
- 239000011232 storage material Substances 0.000 claims description 16
- 239000000956 alloy Substances 0.000 claims description 15
- 229910045601 alloy Inorganic materials 0.000 claims description 15
- 238000005245 sintering Methods 0.000 claims description 15
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 12
- 229910018095 Ni-MH Inorganic materials 0.000 claims description 11
- 229910018477 Ni—MH Inorganic materials 0.000 claims description 11
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000007864 aqueous solution Substances 0.000 claims description 8
- 238000007747 plating Methods 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- BFDHFSHZJLFAMC-UHFFFAOYSA-L nickel(ii) hydroxide Chemical compound [OH-].[OH-].[Ni+2] BFDHFSHZJLFAMC-UHFFFAOYSA-L 0.000 claims description 7
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical group [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 6
- 229910052786 argon Inorganic materials 0.000 claims description 5
- 239000011230 binding agent Substances 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 230000006698 induction Effects 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- KBJMLQFLOWQJNF-UHFFFAOYSA-N nickel(ii) nitrate Chemical group [Ni+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O KBJMLQFLOWQJNF-UHFFFAOYSA-N 0.000 claims description 5
- -1 polytetrafluoroethylene Polymers 0.000 claims description 5
- 239000002002 slurry Substances 0.000 claims description 5
- 239000002562 thickening agent Substances 0.000 claims description 5
- 230000033228 biological regulation Effects 0.000 claims description 4
- UFMZWBIQTDUYBN-UHFFFAOYSA-N cobalt dinitrate Chemical compound [Co+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O UFMZWBIQTDUYBN-UHFFFAOYSA-N 0.000 claims description 4
- 229910001981 cobalt nitrate Inorganic materials 0.000 claims description 4
- 238000007598 dipping method Methods 0.000 claims description 4
- 150000002431 hydrogen Chemical class 0.000 claims description 4
- 229920000609 methyl cellulose Polymers 0.000 claims description 4
- 239000001923 methylcellulose Substances 0.000 claims description 4
- 150000002815 nickel Chemical class 0.000 claims description 4
- 239000003792 electrolyte Substances 0.000 abstract description 4
- 238000007599 discharging Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 229910052987 metal hydride Inorganic materials 0.000 abstract 1
- 239000002585 base Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003513 alkali Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002848 electrochemical method Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Battery Electrode And Active Subsutance (AREA)
- Cell Electrode Carriers And Collectors (AREA)
Abstract
The invention discloses a preparation method of a nickel hydrogen electrode. The preparation method comprises the following steps: (1) forming an electrode substrate; (2) coating a hydrogen storing material; (3) coating active materials and conductive agents; and (4) forming a filming layer. Compared with other electrolytes in the market, the electrolyte of a nickel-metal hydride battery prepared by the manufacture method disclosed by the invention has relatively high discharging capacity, and effectively prolongs the service life by being tried via battery manufacturers.
Description
Technical field
The present invention relates to a kind of preparation method of electrode, relate in particular to a kind of preparation method of NiH electrode.
Background technology
Ni-MH battery can be used for military affairs, Aero-Space, navigation, oil, coal, geological prospecting and operation, reaches fields such as mountain-climbing sports items, antarctic investigation on ice.At present, constitute the porous sintering substrate of the electrode that uses for nickel-hydrogen battery, normally metal dusts such as nickel are processed slurry with the resinous principle that becomes thickener; Be coated on the metallic plates such as iron that become core; After the drying, heat treatment in containing the reducing atmosphere of hydrogen is carried out sintering and is made.The porous sintering substrate that obtains like this is immersed in the nickel nitrate solution, is filled in through nickel hydroxide chemistry or that electrochemical method will become active material in the hole of substrate and makes electrode for alkali accumulator.Research is thought: electrode pair Ni-MH battery performance impact is very big, and the cycle characteristics of the utilance of the active material that electrode provides, corrosion resistance and electrode has all directly determined the performance of Ni-MH battery self.Therefore, the electrode of Ni-MH battery is for having crucial effects in the charging and discharging capabilities of Ni-MH battery and useful life etc.
Summary of the invention
The preparation method who the purpose of this invention is to provide a kind of electrode of Ni-MH battery uses the Ni-MH battery of the electrode of this method preparation to have that charging and discharging capabilities is strong, the advantage of long service life.
To achieve these goals, the preparation method of the electrode of Ni-MH battery provided by the invention comprises the steps:
Step 1 forms electrode base board:
The thickener that utilizes methylcellulose and water to form is processed slurry with carbonyl nickel powder; Be coated on then on the nickel plating stephanoporate steel plate of thick 80-100 μ m; 110-150 ℃ with this nickel plating stephanoporate steel plate drying after; In containing the reducing atmosphere of hydrogen, heat-treat, process the porous sintering substrate at 1050-1100 ℃;
Step 2, the coating hydrogen storage material:
With in the induction melting furnace that feeds argon shield, being smelted into ingot after the alloy hydrogen storage material forvacuum for preparing; Become 100-200 purpose alloyed powder for use in grinding at room temperature the alloy pig that obtains then; This alloyed powder and nickel powder are pressed 1: the mixed of 1-2 is even; And add an amount of polytetrafluoroethylene as binding agent, and being uniformly coated on the above-mentioned porous sintering substrate, wherein said alloy hydrogen storage material is CeAl
2Co
1Mn
0.1
Step 3, coating active material and conductive agent;
Step 4 forms the overlay film layer:
The above-mentioned substrate that is coated with active material and conductive agent flooded 4-8 minute in the aqueous solution that dissolving cobalt nitrate and nickel nitrate form after, the 85-95 ℃ of vacuumize of carrying out 20-40 minute.Then, dipping is after 40-60 minute in the potassium hydroxide aqueous solution of 4-6mol, and the flowing water that carried out 15-20 minute is cleaned, and in air, carry out heat treatment in 20-30 minute in the temperature of regulation, forms the overlay film layer again, obtains electrode at last.
Wherein, active material is a nickel hydroxide in the step 3.
Wherein, conductive agent is a cobalt powder in the step 3.
The method of coating active material and conductive agent is: be coated with the cobalt powder that coating on the substrate of hydrogen storage material accounts for the active material nickel hydroxide of substrate total weight 1-2% and accounts for the conductive agent of substrate total weight 0.2-0.4%.
The substrate of porous sintering described in the step 1 has 85% porosity.
Adopt the Ni-MH battery electrolyte of manufacturing approach preparation of the present invention, through trying out of battery producer, compare with other electrolyte on the market, discharge capability greatly improves, and effectively prolonged useful life.
Embodiment
Embodiment one
Form electrode base board
The thickener that utilizes methylcellulose and water to form is processed slurry with carbonyl nickel powder; Be coated on then on the nickel plating stephanoporate steel plate of thick 80 μ m; 110 ℃ with this nickel plating stephanoporate steel plate drying after; In containing the reducing atmosphere of hydrogen, heat-treat at about 1050 ℃, process the porous sintering substrate, this porous sintering substrate has about 85% porosity.
The coating hydrogen storage material
With in the induction melting furnace that feeds argon shield, being smelted into ingot after the alloy hydrogen storage material forvacuum for preparing; Become 100 purpose alloyed powders for use in grinding at room temperature the alloy pig that obtains then; This alloyed powder and nickel powder is even by 1: 1 mixed; And add an amount of polytetrafluoroethylene as binding agent, and being uniformly coated on the above-mentioned porous sintering substrate, wherein said alloy hydrogen storage material is CeAl
2Co
1Mn
0.1
Coating active material and conductive agent
Be coated with on the substrate of hydrogen storage material the cobalt powder that coating accounts for the active material nickel hydroxide of substrate total weight 1% and accounts for the conductive agent of substrate total weight 0.2%.
Form the overlay film layer
The above-mentioned substrate that is coated with active material and conductive agent flooded 4 minutes in the aqueous solution that dissolving cobalt nitrate and nickel nitrate form after, 85 ℃ of vacuumizes of carrying out 20 minutes.Then, dipping is after 40 minutes in the potassium hydroxide aqueous solution of 4mol, and the flowing water that carried out 15 minutes is cleaned, and in air, carry out heat treatment in 20 minutes in the temperature of regulation, forms the overlay film layer again, obtains electrode at last.
Embodiment two
Form electrode base board
The thickener that utilizes methylcellulose and water to form is processed slurry with carbonyl nickel powder; Be coated on then on the nickel plating stephanoporate steel plate of thick 80 μ m; 110 ℃ with this nickel plating stephanoporate steel plate drying after; In containing the reducing atmosphere of hydrogen, heat-treat at about 1050 ℃, process the porous sintering substrate, this porous sintering substrate has about 85% porosity;
The coating hydrogen storage material
With in the induction melting furnace that feeds argon shield, being smelted into ingot after the alloy hydrogen storage material forvacuum for preparing; Become 200 purpose alloyed powders for use in grinding at room temperature the alloy pig that obtains then; This alloyed powder and nickel powder is even by 1: 2 mixed; And add an amount of polytetrafluoroethylene as binding agent, and being uniformly coated on the above-mentioned porous sintering substrate, wherein said alloy hydrogen storage material is CeAl
2Co
1Mn
0.1
Coating active material and conductive agent
Be coated with on the substrate of hydrogen storage material the cobalt powder that coating accounts for the active material nickel hydroxide of substrate total weight 2% and accounts for the conductive agent of substrate total weight 0.4%;
Form the overlay film layer
The above-mentioned substrate that is coated with active material and conductive agent flooded 8 minutes in the aqueous solution that dissolving cobalt nitrate and nickel nitrate form after, 95 ℃ of vacuumizes of carrying out 40 minutes.Then, dipping is after 60 minutes in the potassium hydroxide aqueous solution of 6mol, and the flowing water that carried out 20 minutes is cleaned, and in air, carry out heat treatment in 30 minutes in the temperature of regulation, forms the overlay film layer again, obtains electrode at last.
Comparative example
Element wt percentage according to alloy is prepared burden, and with in the induction melting furnace that feeds argon shield, being smelted into ingot after the alloy raw material forvacuum for preparing, then the alloy pig that obtains is become for use less than alloyed powder in grinding at room temperature.This alloyed powder and nickel powder is even by 1: 1 mixed, and add an amount of polytetrafluoroethylene (PTFE) as on the binding agent employing conventional method nickel foam substrate, cold pressing plate is as obtaining electrode.
The Performance Detection that electrode that embodiment 1 and 2 prepares and existing electrode (Comparative Examples) are used for Ni-MH battery is following:
| Comparative Examples | Embodiment 1 | Embodiment 2 | |
| The normal temperature charge/discharge capacity | ?1400mAh | 1650mAh | 1700mAh |
| Useful life | 2-3 | 3-4 | 3-4 |
| Capability retention (7 days) | ?85％ | 93％ | 95％ |
Can know from last table; Adopt the capability retention and the useful life of the nickel-hydrogen battery electrode that technological process and material component make among the embodiment 1 and 2 significantly to promote, can satisfy military affairs, Aero-Space, navigation, oil, coal, geological prospecting and operation, reach the long-time subsequent use demand in the fields such as sports items, antarctic investigation of climbing the mountain etc. on ice.
The above; It only is preferred embodiment of the present invention; Be not in order to limiting the present invention, anyly be familiar with the professional and technical personnel, in not breaking away from technical scheme of the present invention; When the technology contents of above-mentioned announcement capable of using is made a little change or is modified to the equivalent embodiment of equivalent variations; In every case be not break away from technical scheme content of the present invention, to any simple modification, equivalent variations and modification that above embodiment made, all still belong in the scope of technical scheme of the present invention according to technical spirit of the present invention.
Claims (5)
1. the preparation method of the electrode of a Ni-MH battery is characterized in that, comprises the steps:
Step 1 forms electrode base board:
The thickener that utilizes methylcellulose and water to form is processed slurry with carbonyl nickel powder; Be coated on then on the nickel plating stephanoporate steel plate of thick 80-100 μ m; 110-150 ℃ with this nickel plating stephanoporate steel plate drying after; In containing the reducing atmosphere of hydrogen, heat-treat, process the porous sintering substrate at 1050-1100 ℃;
Step 2, the coating hydrogen storage material:
With in the induction melting furnace that feeds argon shield, being smelted into ingot after the alloy hydrogen storage material forvacuum for preparing; Become 100-200 purpose alloyed powder for use in grinding at room temperature the alloy pig that obtains then; This alloyed powder and nickel powder are pressed 1: the mixed of 1-2 is even; And add an amount of polytetrafluoroethylene as binding agent, and being uniformly coated on the above-mentioned porous sintering substrate, wherein said alloy hydrogen storage material is CeAl
2Co
1Mn
0.1
Step 3, coating active material and conductive agent;
Step 4 forms the overlay film layer:
The above-mentioned substrate that is coated with active material and conductive agent flooded 4-8 minute in the aqueous solution that dissolving cobalt nitrate and nickel nitrate form after, the 85-95 ℃ of vacuumize of carrying out 20-40 minute;
Then, dipping is after 40-60 minute in the potassium hydroxide aqueous solution of 4-6mol, and the flowing water that carried out 15-20 minute is cleaned, and in air, carry out heat treatment in 20-30 minute in the temperature of regulation, forms the overlay film layer again, obtains electrode at last.
2. method according to claim 1 is characterized in that, active material is a nickel hydroxide in the step 3.
3. method according to claim 1 is characterized in that, conductive agent is a cobalt powder in the step 3.
4. according to any described method in the claim 1 ~ 3; It is characterized in that the method for coating active material and conductive agent is: be coated with the cobalt powder that coating on the substrate of hydrogen storage material accounts for the active material nickel hydroxide of substrate total weight 1-2% and accounts for the conductive agent of substrate total weight 0.2-0.4%.
5. according to any described method in the claim 1 ~ 3, it is characterized in that the substrate of porous sintering described in the step 1 has 85% porosity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103158465A CN102800848A (en) | 2012-08-30 | 2012-08-30 | Preparation method of nickel hydrogen electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103158465A CN102800848A (en) | 2012-08-30 | 2012-08-30 | Preparation method of nickel hydrogen electrode |
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| Publication Number | Publication Date |
|---|---|
| CN102800848A true CN102800848A (en) | 2012-11-28 |
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|---|---|---|---|
| CN2012103158465A Pending CN102800848A (en) | 2012-08-30 | 2012-08-30 | Preparation method of nickel hydrogen electrode |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1211085A (en) * | 1997-05-15 | 1999-03-17 | 松下电器产业株式会社 | Electrode for alkaline storage battery, manufacturing method thereof, and alkaline storage battery |
| CN1267924A (en) * | 1999-02-05 | 2000-09-27 | 东芝电池株式会社 | Hydrogen absorption alloy, method for producing hydrogen absorption alloy and alkaline secondgry cell |
| CN1612379A (en) * | 2003-10-30 | 2005-05-04 | 鸿富锦精密工业（深圳）有限公司 | Nickel-hydrogen cell electrode and its preparing method |
| CN101304087A (en) * | 2008-06-12 | 2008-11-12 | 中国科学院上海微系统与信息技术研究所 | A kind of preparation method of negative electrode of nickel-metal hydride battery |
-
2012
- 2012-08-30 CN CN2012103158465A patent/CN102800848A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1211085A (en) * | 1997-05-15 | 1999-03-17 | 松下电器产业株式会社 | Electrode for alkaline storage battery, manufacturing method thereof, and alkaline storage battery |
| CN1267924A (en) * | 1999-02-05 | 2000-09-27 | 东芝电池株式会社 | Hydrogen absorption alloy, method for producing hydrogen absorption alloy and alkaline secondgry cell |
| CN1612379A (en) * | 2003-10-30 | 2005-05-04 | 鸿富锦精密工业（深圳）有限公司 | Nickel-hydrogen cell electrode and its preparing method |
| CN101304087A (en) * | 2008-06-12 | 2008-11-12 | 中国科学院上海微系统与信息技术研究所 | A kind of preparation method of negative electrode of nickel-metal hydride battery |
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Application publication date: 20121128 |
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