WO2006057279A1 - ニッケル水素蓄電池およびその負極の製造方法 - Google Patents
ニッケル水素蓄電池およびその負極の製造方法 Download PDFInfo
- Publication number
- WO2006057279A1 WO2006057279A1 PCT/JP2005/021536 JP2005021536W WO2006057279A1 WO 2006057279 A1 WO2006057279 A1 WO 2006057279A1 JP 2005021536 W JP2005021536 W JP 2005021536W WO 2006057279 A1 WO2006057279 A1 WO 2006057279A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- negative electrode
- nickel
- mixture layer
- storage battery
- metal hydride
- Prior art date
Links
- 238000003860 storage Methods 0.000 title claims abstract description 56
- 239000001257 hydrogen Substances 0.000 title claims abstract description 22
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 22
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 20
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 229910052759 nickel Inorganic materials 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title description 4
- 239000000203 mixture Substances 0.000 claims abstract description 47
- 230000003746 surface roughness Effects 0.000 claims abstract description 22
- 239000000956 alloy Substances 0.000 claims abstract description 12
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 12
- 239000011149 active material Substances 0.000 claims abstract description 5
- 229910052987 metal hydride Inorganic materials 0.000 claims description 38
- 230000002093 peripheral effect Effects 0.000 claims description 27
- 238000005498 polishing Methods 0.000 claims description 10
- 239000004570 mortar (masonry) Substances 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000000758 substrate Substances 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 2
- 229910018095 Ni-MH Inorganic materials 0.000 claims 1
- 229910018477 Ni—MH Inorganic materials 0.000 claims 1
- 150000002815 nickel Chemical class 0.000 claims 1
- 239000004575 stone Substances 0.000 claims 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 abstract description 8
- 229910001882 dioxygen Inorganic materials 0.000 abstract description 8
- BFDHFSHZJLFAMC-UHFFFAOYSA-L nickel(ii) hydroxide Chemical compound [OH-].[OH-].[Ni+2] BFDHFSHZJLFAMC-UHFFFAOYSA-L 0.000 abstract description 3
- 238000004804 winding Methods 0.000 abstract 1
- -1 Nickel metal hydride Chemical class 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 6
- 238000006722 reduction reaction Methods 0.000 description 6
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 4
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 230000002687 intercalation Effects 0.000 description 3
- 238000009830 intercalation Methods 0.000 description 3
- 239000004745 nonwoven fabric Substances 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 229920003048 styrene butadiene rubber Polymers 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000002174 Styrene-butadiene Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000006258 conductive agent Substances 0.000 description 2
- 239000011162 core material Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000007773 negative electrode material Substances 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000007788 roughening Methods 0.000 description 2
- 239000002562 thickening agent Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910021503 Cobalt(II) hydroxide Inorganic materials 0.000 description 1
- 229910018007 MmNi Inorganic materials 0.000 description 1
- DWTHJRGGAKKQPO-UHFFFAOYSA-L [OH-].[OH-].[Ni].[Ni++] Chemical compound [OH-].[OH-].[Ni].[Ni++] DWTHJRGGAKKQPO-UHFFFAOYSA-L 0.000 description 1
- 239000006061 abrasive grain Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- ASKVAEGIVYSGNY-UHFFFAOYSA-L cobalt(ii) hydroxide Chemical compound [OH-].[OH-].[Co+2] ASKVAEGIVYSGNY-UHFFFAOYSA-L 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002612 dispersion medium Substances 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 150000003457 sulfones Chemical class 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
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
- H01M4/24—Electrodes for alkaline 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
- H01M10/34—Gastight accumulators
- H01M10/345—Gastight metal hydride 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
- H01M10/24—Alkaline accumulators
- H01M10/28—Construction or manufacture
-
- 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
- H01M10/24—Alkaline accumulators
- H01M10/30—Nickel accumulators
-
- 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
- H01M4/24—Electrodes for alkaline accumulators
- H01M4/242—Hydrogen storage electrodes
-
- 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
- H01M4/24—Electrodes for alkaline accumulators
- H01M4/26—Processes of manufacture
-
- 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4235—Safety or regulating additives or arrangements in electrodes, separators or electrolyte
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/107—Primary casings; Jackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/04—Cells with aqueous electrolyte
- H01M6/06—Dry cells, i.e. cells wherein the electrolyte is rendered non-fluid
- H01M6/10—Dry cells, i.e. cells wherein the electrolyte is rendered non-fluid with wound or folded electrodes
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49108—Electric battery cell making
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49204—Contact or terminal manufacturing
Definitions
- the present invention relates to a nickel metal hydride storage battery, and more particularly to suppression of battery internal pressure by improving a negative electrode structure.
- Alkali storage batteries are widely used as power sources for portable devices as rechargeable batteries. Above all, nickel-hydrogen storage batteries using hydrogen storage alloys as the negative electrode active material are relatively clean even in the environment where energy density is high, and are being developed as the main power source for various portable devices.
- a bottomed cylindrical container that houses a group of electrodes composed of positive and negative electrodes is used as a negative electrode terminal, and a sealing plate is used as a positive electrode terminal in an insulated form.
- the positive electrode is integrated with the sealing plate via a lead to form a current collecting structure, whereas the negative electrode has a current collecting structure formed by its outermost peripheral portion being in contact with the side wall of the bottomed cylindrical container. Forming.
- Nickel metal hydride batteries are reduced to water by reacting with hydrogen stored in a hydrogen storage alloy, which is a negative electrode active material, when positive gas power is generated when overcharged. It has a reaction mechanism that is suppressed by In order to lubricate this reaction, a method has been proposed in which a graphite intercalation compound capable of occluding and releasing hydrogen is provided on the negative electrode surface to smoothly move the oxygen gas generated in the positive electrode force to the negative electrode (for example, see Patent Document 1).
- Patent Document 1 Japanese Patent Laid-Open No. 5-335015
- the present invention has been made to solve the above-described problems, and an object of the present invention is to facilitate the reduction of oxygen gas during rapid charging without reducing the design capacity of the battery.
- the nickel metal hydride storage battery of the present invention for achieving the above object includes a negative electrode in which a mixture layer containing a hydrogen storage alloy is disposed on a conductive substrate, a positive electrode using nickel hydroxide as an active material, and a separator.
- a nickel metal hydride storage battery in which a spiral electrode group whose outermost peripheral part is a negative electrode is wound and accommodated in a bottomed cylindrical container, the outermost peripheral part of the negative electrode in contact with the side wall of the bottomed cylindrical container
- the surface roughness of the agent layer is 3.5 m or more as the 10-point average roughness, which is larger than the surface roughness of the negative electrode mixture layer in other portions.
- the method for producing a negative electrode for a nickel metal hydride storage battery of the present invention for achieving the above-described structure of the surface of the mixture layer is obtained by applying a mixture paste containing a hydrogen storage alloy to a conductive substrate and drying it. After the first step of producing the negative electrode hoop and the second step of pressing and cutting the negative electrode hoop, the cut negative electrode is passed through the gap between the cylindrical mortar and the pressure roller, and the electrode group is wound. There is a third step of polishing the mixture layer at the location in contact with the side wall of the bottomed cylindrical container using the peripheral surface of the cylindrical grindstone.
- an additive as in Patent Document 1 is obtained by increasing the reaction area by roughening the surface of the negative electrode mixture layer located at the outermost peripheral portion of the electrode group serving as a path for the generated gas.
- the reduction reaction of oxygen gas without using a large amount of can be facilitated.
- the rough surface does not face the positive electrode, it avoids the problem that the positive and negative electrodes are internally short-circuited through the separator.
- FIG. 1 is a schematic view of a negative electrode mixture layer polishing apparatus in a production method of the present invention.
- the gist of the present invention is a negative electrode in contact with the side wall of a bottomed cylindrical container in a nickel metal hydride battery in which a spiral electrode group is wound and accommodated in the bottomed cylindrical container.
- the surface roughness of the outermost peripheral mixture layer is 3.5 m or more as a ten-point average roughness (preferably 5 to m), and is characterized by being larger than the surface roughness of the other portion of the negative electrode mixture layer.
- the surface roughness of the outermost peripheral mixture layer is more preferably 5 to 50 ⁇ m as a ten-point average roughness.
- Specific 10-point average roughness and its measurement method are specified in JIS standard B0601.
- the surface roughness of the outermost peripheral mixture layer is less than 5 m, the effect of the oxygen gas reduction reaction of the present invention is reduced, and when the surface roughness exceeds 50 m, the bottomed cylindrical container The contact point between and decreases and the internal resistance of the battery increases.
- the surface roughness is increased only in the outermost peripheral mixture layer in contact with the side wall of the bottomed cylindrical container.
- the entire surface of the negative electrode mixture layer is roughened, internal short-circuit defects are likely to occur due to shavings generated by roughening the mixture layer.
- the portion other than the outermost peripheral mixture layer has a surface roughness after rolling of generally less than 3.5 / z m (more specifically, less than 3 / z m).
- the effect of the present invention is exhibited even if the surface roughness of this portion is infinitely small, for example, but the particle size of the hydrogen storage alloy powder (average 10 to 30 ⁇ m) and the industrially feasible rolling equipment.
- the lower limit of the actual surface roughness is 0.5 m as the 10-point average roughness.
- the positive electrode uses nickel hydroxide nickel as an active material, and a conductive agent such as cobalt hydroxide or metallic cobalt powder, and a thickener such as carboxymethylcellulose (hereinafter abbreviated as CMC) as necessary.
- a binder such as polytetrafluoroethylene is prepared into a paste, which is applied or filled into a core material such as a three-dimensional foamed nickel porous body, and then dried. It is made by dry 'rolling' cutting.
- the negative electrode 1 uses a mixture layer containing a hydrogen storage alloy, and a conductive agent such as carbon black and, if necessary, a thickener such as CMC and a styrene-butadiene copolymer (hereinafter abbreviated as SBR).
- a conductive agent such as carbon black and, if necessary, a thickener such as CMC and a styrene-butadiene copolymer (hereinafter abbreviated as SBR).
- SBR styrene-butadiene copolymer
- an olefin-based non-woven fabric such as polypropylene can be used. Further, if necessary, the nonwoven fabric can be subjected to hydrophilic treatment such as sulfone.
- an aqueous solution in which the ratio of KOH, NaOH, and LiOH is appropriately adjusted can be used.
- the bottomed cylindrical container may be made of iron or stainless steel and appropriately subjected to squeeze creaking to prevent fouling.
- MmNi Co Al Mn Uses a hydrogen storage alloy that also has strength, and grinds 3 to 50 m with a pulverizer.
- the negative electrode is sandwiched between a cylindrical grindstone 2 having abrasive grains attached to the surface thereof and a pressure roller 3, and the cylindrical grindstone 2 is rotated, and the driving force is used to remove the outermost peripheral mixture layer portion. Polishing was performed at a rate of 4 cmZ seconds, and a negative electrode for a nickel-metal hydride storage battery having a 10-point average roughness of 3.7 / zm on the surface contacting the side wall of the bottomed cylindrical container of the outermost peripheral mixture layer was prepared. This is the negative electrode for the negative hydrogen storage battery of Example 1.
- Example 2 After sandwiching the negative electrode for nickel-metal hydride storage battery of Example 1 between the cylindrical grindstone 2 and the pressure roller 3, the outermost peripheral portion is moved by moving the negative electrode without applying a driving force to the cylindrical mortar 2
- a negative electrode for a nickel-metal hydride storage battery was produced in the same manner as in Example 1 except that the mixture layer portion was polished at a speed of 2 cmZ seconds and the 10-point average roughness of this portion was changed to 5. O / zm. This is the negative electrode for the nickel hydrogen storage battery of Example 2.
- the nickel-metal hydride storage battery negative electrode of Example 1 is sandwiched between the cylindrical grindstone 2 and the pressure roller 3 to rotate the cylindrical mortar 2 while moving the negative electrode in the opposite direction to this rotation.
- a negative electrode for a nickel-metal hydride storage battery was produced in the same manner as in Example 1, except that the portion of the outer peripheral mixture layer was polished at a speed of 2 cmZ seconds and the 10-point average roughness of this portion was changed to 10 m. This is the negative electrode for nickel-metal hydride storage battery of Example 3.
- the outermost peripheral mixture layer was polished at a speed of lcmZ seconds, and the 10-point average roughness of this part was changed to 20 m.
- a negative electrode for a nickel-metal hydride storage battery was prepared. This is the negative electrode for nickel-metal hydride storage battery of Example 4.
- the outermost peripheral mixture layer was polished at a speed of 0.5 cm Z seconds, and the 10-point average roughness of this part was changed to 50 m.
- a negative electrode for nickel-metal hydride storage batteries similar to 3 was prepared. This is the negative electrode for nickel-metal hydride storage battery of Example 5.
- the outermost peripheral mixture layer was polished at a speed of 0.4 cm Z seconds, and the ten-point average roughness of this part was changed to 60 m.
- a negative electrode for nickel-metal hydride storage batteries similar to 3 was prepared. This is the negative electrode for nickel-metal hydride storage battery of Example 6.
- a negative electrode for a nickel-metal hydride storage battery was prepared in the same manner as in Example 1 except that the outermost peripheral mixture layer portion was not polished with respect to the negative electrode for the nickel-metal hydride storage battery of Example 1. This is the negative electrode for nickel-metal hydride storage batteries of Comparative Example 1. [0029] (Comparative Example 2)
- a negative electrode for a nickel-metal hydride storage battery was prepared in the same manner as in Example 4 except that the entire part of the negative electrode mixture layer was polished with respect to the negative electrode for the nickel-metal hydride storage battery of Example 4. This is the negative electrode for nickel-metal hydride storage battery of Comparative Example 2.
- a nickel-metal hydride battery is produced by creating a cylindrical electrode group, injecting a predetermined electrolyte, and sealing it with a sealing plate. did.
- the internal resistance of the obtained nickel-metal hydride storage battery and the internal pressure of the battery when the battery was charged for 1.2 hours at a current of 1 hour were measured.
- the battery of Comparative Example 1 in which the outermost peripheral portion of the negative electrode was not polished was used.
- the batteries of Examples 1 to 6 of the present invention were able to suppress the battery internal pressure during charging.
- Example 1 where the surface roughness of the outermost peripheral mixture layer is 3.7 111, the oxygen gas reduction reaction is not smooth, so the internal pressure of the battery is slightly high.
- Example 6 where the surface roughness is 60 m is bottomed.
- the internal resistance of the battery increased slightly because the number of contact points with the cylindrical container decreased. From this result, it can be seen that the surface roughness of the outermost peripheral mixture layer of the negative electrode is preferably in the range of 5 to 50 m as the ten-point average roughness.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Secondary Cells (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/791,521 US8389159B2 (en) | 2004-11-26 | 2005-11-24 | Nickel metal hydride rechargeable battery and method for manufacturing negative electrode thereof |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004342204A JP4654669B2 (ja) | 2004-11-26 | 2004-11-26 | ニッケル水素蓄電池およびその負極の製造方法 |
JP2004-342204 | 2004-11-26 |
Publications (1)
Publication Number | Publication Date |
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WO2006057279A1 true WO2006057279A1 (ja) | 2006-06-01 |
Family
ID=36498015
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2005/021536 WO2006057279A1 (ja) | 2004-11-26 | 2005-11-24 | ニッケル水素蓄電池およびその負極の製造方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US8389159B2 (ja) |
JP (1) | JP4654669B2 (ja) |
KR (1) | KR20070088627A (ja) |
CN (1) | CN100514722C (ja) |
WO (1) | WO2006057279A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102832420A (zh) * | 2012-09-18 | 2012-12-19 | 安徽亿诺新能源有限责任公司 | 无极片非卷绕式高容量镍氢电池及其加工工艺 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5196805B2 (ja) * | 2007-02-23 | 2013-05-15 | 三洋電機株式会社 | アルカリ蓄電池 |
CN102064320A (zh) * | 2010-12-24 | 2011-05-18 | 深圳市量能科技有限公司 | 二次电池、极片及其制作方法 |
FR2975815B1 (fr) | 2011-05-27 | 2014-02-21 | Accumulateurs Fixes | Electrode negative pour supercondensateur asymetrique a electrode positive a base d'hydroxyde de nickel et a electrolyte alcalin et son procede de fabrication |
CN103151491A (zh) * | 2011-12-06 | 2013-06-12 | 深圳市比克电池有限公司 | 电极及其制造方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0541209A (ja) * | 1991-08-07 | 1993-02-19 | Toshiba Battery Co Ltd | 水素吸蔵合金電極 |
JP2002008645A (ja) * | 2000-06-22 | 2002-01-11 | Honda Motor Co Ltd | 水素吸蔵合金負極及びその製造方法 |
JP2004296251A (ja) * | 2003-03-27 | 2004-10-21 | Sanyo Electric Co Ltd | 非水電解質二次電池 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
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US4716088A (en) * | 1986-12-29 | 1987-12-29 | Energy Conversion Devices, Inc. | Activated rechargeable hydrogen storage electrode and method |
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2005
- 2005-11-24 WO PCT/JP2005/021536 patent/WO2006057279A1/ja active Application Filing
- 2005-11-24 US US11/791,521 patent/US8389159B2/en not_active Expired - Fee Related
- 2005-11-24 CN CNB2005800405327A patent/CN100514722C/zh not_active Expired - Fee Related
- 2005-11-24 KR KR1020077010111A patent/KR20070088627A/ko not_active Application Discontinuation
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CN102832420A (zh) * | 2012-09-18 | 2012-12-19 | 安徽亿诺新能源有限责任公司 | 无极片非卷绕式高容量镍氢电池及其加工工艺 |
Also Published As
Publication number | Publication date |
---|---|
CN100514722C (zh) | 2009-07-15 |
KR20070088627A (ko) | 2007-08-29 |
JP4654669B2 (ja) | 2011-03-23 |
CN101065865A (zh) | 2007-10-31 |
US20110014508A1 (en) | 2011-01-20 |
JP2006156005A (ja) | 2006-06-15 |
US8389159B2 (en) | 2013-03-05 |
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