WO2022137629A1 - アルカリ乾電池 - Google Patents
アルカリ乾電池 Download PDFInfo
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- WO2022137629A1 WO2022137629A1 PCT/JP2021/029088 JP2021029088W WO2022137629A1 WO 2022137629 A1 WO2022137629 A1 WO 2022137629A1 JP 2021029088 W JP2021029088 W JP 2021029088W WO 2022137629 A1 WO2022137629 A1 WO 2022137629A1
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- Prior art keywords
- negative electrode
- acid
- positive electrode
- case
- additive
- Prior art date
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- 150000007524 organic acids Chemical class 0.000 claims abstract description 48
- 239000000654 additive Substances 0.000 claims abstract description 46
- 230000000996 additive effect Effects 0.000 claims abstract description 44
- 239000008151 electrolyte solution Substances 0.000 claims abstract description 42
- 239000007773 negative electrode material Substances 0.000 claims abstract description 18
- 238000007789 sealing Methods 0.000 claims abstract description 17
- 239000011701 zinc Substances 0.000 claims abstract description 15
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 13
- 238000002844 melting Methods 0.000 claims abstract description 10
- 230000008018 melting Effects 0.000 claims abstract description 10
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 claims description 12
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 claims description 10
- QMKYBPDZANOJGF-UHFFFAOYSA-N benzene-1,3,5-tricarboxylic acid Chemical compound OC(=O)C1=CC(C(O)=O)=CC(C(O)=O)=C1 QMKYBPDZANOJGF-UHFFFAOYSA-N 0.000 claims description 10
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 10
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims description 9
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 claims description 8
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 claims description 8
- 239000005711 Benzoic acid Substances 0.000 claims description 4
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 claims description 4
- 239000001361 adipic acid Substances 0.000 claims description 4
- 235000011037 adipic acid Nutrition 0.000 claims description 4
- 235000010233 benzoic acid Nutrition 0.000 claims description 4
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 abstract description 3
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 24
- 239000008188 pellet Substances 0.000 description 15
- 239000000203 mixture Substances 0.000 description 13
- 239000002245 particle Substances 0.000 description 12
- 239000006258 conductive agent Substances 0.000 description 10
- 239000000843 powder Substances 0.000 description 10
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- 239000003349 gelling agent Substances 0.000 description 8
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 7
- -1 hydroxide ions Chemical class 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 6
- 125000001183 hydrocarbyl group Chemical group 0.000 description 6
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- 230000007423 decrease Effects 0.000 description 5
- 239000000835 fiber Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 4
- 229920000298 Cellophane Polymers 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 229910001297 Zn alloy Inorganic materials 0.000 description 3
- 125000003118 aryl group Chemical group 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
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- 239000000463 material Substances 0.000 description 3
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- 239000007774 positive electrode material Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000011787 zinc oxide Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 2
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- 229920002125 Sokalan® Polymers 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 150000007933 aliphatic carboxylic acids Chemical class 0.000 description 2
- 125000001931 aliphatic group Chemical group 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 150000001340 alkali metals Chemical class 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- UJMDYLWCYJJYMO-UHFFFAOYSA-N benzene-1,2,3-tricarboxylic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1C(O)=O UJMDYLWCYJJYMO-UHFFFAOYSA-N 0.000 description 2
- 229910052797 bismuth Inorganic materials 0.000 description 2
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 2
- 229910052738 indium Inorganic materials 0.000 description 2
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 239000012982 microporous membrane Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 239000004584 polyacrylic acid Substances 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical compound OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 description 2
- 229930195734 saturated hydrocarbon Natural products 0.000 description 2
- 238000007086 side reaction Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 2
- ARCGXLSVLAOJQL-UHFFFAOYSA-N trimellitic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C(C(O)=O)=C1 ARCGXLSVLAOJQL-UHFFFAOYSA-N 0.000 description 2
- RTBFRGCFXZNCOE-UHFFFAOYSA-N 1-methylsulfonylpiperidin-4-one Chemical compound CS(=O)(=O)N1CCC(=O)CC1 RTBFRGCFXZNCOE-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- VNQABZCSYCTZMS-UHFFFAOYSA-N Orthoform Chemical compound COC(=O)C1=CC=C(O)C(N)=C1 VNQABZCSYCTZMS-UHFFFAOYSA-N 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000006230 acetylene black Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 125000002947 alkylene group Chemical group 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- JFCQEDHGNNZCLN-UHFFFAOYSA-N anhydrous glutaric acid Natural products OC(=O)CCCC(O)=O JFCQEDHGNNZCLN-UHFFFAOYSA-N 0.000 description 1
- 229910021383 artificial graphite Inorganic materials 0.000 description 1
- 150000001721 carbon Chemical group 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
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- 229910052802 copper Inorganic materials 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
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- 239000003792 electrolyte Substances 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 239000001530 fumaric acid Substances 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 125000005843 halogen group Chemical group 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
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- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 1
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 1
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- 239000011734 sodium Substances 0.000 description 1
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 1
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- 125000000542 sulfonic acid group Chemical group 0.000 description 1
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- 229930195735 unsaturated hydrocarbon Natural products 0.000 description 1
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Images
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
- H01M4/244—Zinc 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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
- H01M4/42—Alloys based on zinc
-
- 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 of a single cell or a single battery
- H01M50/172—Arrangements of electric connectors penetrating the casing
- H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
- H01M50/182—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for cells with a collector centrally disposed in the active mass, e.g. Leclanché cells
-
- 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 of a single cell or a single battery
- H01M50/183—Sealing members
-
- 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
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/46—Separators, membranes or diaphragms characterised by their combination with electrodes
-
- 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
- H01M6/02—Details
-
- 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
- H01M6/08—Dry cells, i.e. cells wherein the electrolyte is rendered non-fluid with cup-shaped electrodes
-
- 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
- H01M6/08—Dry cells, i.e. cells wherein the electrolyte is rendered non-fluid with cup-shaped electrodes
- H01M6/085—Dry cells, i.e. cells wherein the electrolyte is rendered non-fluid with cup-shaped electrodes of the reversed type, i.e. anode in the centre
-
- 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
- H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
- H01M2004/027—Negative electrodes
-
- 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
- H01M2300/0002—Aqueous electrolytes
- H01M2300/0014—Alkaline electrolytes
-
- 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
- This disclosure relates to alkaline batteries.
- Alkaline batteries (alkaline manganese batteries) are widely used because they have a larger capacity than manganese batteries and can draw a large amount of current.
- Patent Document 1 proposes that in an alkaline dry cell having an inside-out structure, a resin swollen with an electrolytic solution is placed on a positive electrode mixture and gel-like zinc on the opening side of a positive electrode can.
- Patent Document 2 proposes that a gel-like negative electrode contains terephthalic acid having a specific particle size. This suppresses an internal short circuit when a strong impact or the like is applied to the battery.
- Alkaline batteries are required to suppress the temperature rise at the time of an external short circuit and further improve their safety.
- One aspect of the present disclosure includes a bottomed cylindrical case, a hollow cylindrical positive electrode inscribed in the case, a negative electrode filled in the hollow portion of the positive electrode and containing a negative electrode active material containing zinc, and the positive electrode.
- a separator disposed between the negative electrode, the positive electrode, the negative electrode, an alkaline electrolytic solution contained in the separator, and a sealing unit covering the opening of the case are provided.
- the gap between the negative electrode and the sealing unit and / or the gap between the negative electrode and the bottom of the case is filled with an additive, and the additive relates to an alkaline dry cell containing an organic acid having a melting point of 90 ° C. or higher.
- FIG. 1 is a front view showing a part of an alkaline dry battery according to an embodiment of the present disclosure as a cross section.
- FIG. 2 is a front view showing a part of an alkaline battery according to another embodiment of the present disclosure as a cross section.
- the alkaline dry battery according to the embodiment of the present disclosure is arranged between a bottomed cylindrical case, a hollow cylindrical positive electrode inscribed in the case, a negative electrode filled in the hollow portion of the positive electrode, and a positive electrode and a negative electrode. It is provided with a separator, an alkaline electrolytic solution, and a sealing unit that covers the opening of the case.
- the negative electrode contains a negative electrode active material containing zinc.
- the alkaline electrolyte is contained in the positive electrode, the negative electrode and the separator.
- the gap between the negative electrode and the sealing unit and / or the gap between the negative electrode and the bottom of the case is filled with the additive, and the additive contains an organic acid having a melting point of 90 ° C. or higher.
- the above melting point refers to a value measured by a general method described in, for example, Japanese Industrial Standards (JIS K0064).
- the organic acid filled adjacent to the negative electrode begins to melt and diffuses into the negative electrode, and the organic acid efficiently supplies protons to the electrolytic solution in the negative electrode.
- the hydroxide ion concentration of the electrolytic solution in the negative electrode decreases.
- the tetrahydroxydozinc (II) acid ion ([Zn (OH) 4 ] 2- ) in the negative electrode is reduced, zinc oxide (ZnO) is precipitated to cover the surface of the negative electrode active material, and the discharge reaction of the negative electrode is performed.
- the elution reaction of zinc is inhibited, and the generation of short-circuit current and the accompanying temperature rise are suppressed.
- the additive filled in the predetermined gap in the battery contains substantially no electrolytic solution.
- Most of the organic acids do not form a salt with the alkali metal derived from the electrolytic solution, and are filled in the negative electrode in a state where protons can be effectively supplied at the time of an external short circuit.
- the molar ratio of the alkali metal present in the additive to the acidic group derived from the organic acid present in the additive is, for example, 1/10 or less (or 1/15 or less).
- the hydroxide ion concentration in the negative electrode can be reduced at the time of an external short circuit.
- the organic acid is contained in the gel-like negative electrode when the negative electrode is manufactured, the concentration of hydroxide ions cannot be controlled to be low only at the time of short circuit as described above.
- the melting point of the organic acid When the melting point of the organic acid is 90 ° C. or higher, the diffusion of the organic acid into the negative electrode is suppressed during normal use of the battery, and the organic acid can be diffused into the negative electrode during an external short circuit. From the viewpoint of battery safety and reliability, the melting point of the organic acid may be 100 ° C. or higher, 100 ° C. or higher, and 500 ° C. or lower.
- the organic acid When the melting point of the organic acid is less than 90 ° C, the organic acid may start to melt and diffuse into the gel-like negative electrode during normal use, and the concentration of hydroxide ions cannot be controlled low only at the time of short circuit. Further, in this case, the concentration of hydroxide ions decreases during normal use, and the discharge performance tends to decrease.
- the organic acid examples include organic compounds having an acidic group such as a carboxy group and a sulfonic acid group. Further, the molecule of the organic acid may have an aromatic group or an aliphatic group. The aromatic group may contain, for example, one benzene ring. Aliphatic groups can include linear or branched hydrocarbon groups. The hydrocarbon group may be a saturated hydrocarbon group or an unsaturated hydrocarbon group. A part of the hydrogen atom bonded to the carbon atom of the hydrocarbon group and a part of the hydrogen atom bonded to the aromatic ring may be substituted with a substituent such as a halogen atom. As the organic acid, one kind may be used alone, or two or more kinds may be used in combination.
- the organic acid preferably contains a carboxylic acid.
- Carboxylic acids have, for example, 4 or less carboxy groups per molecule. From the viewpoint of efficiently supplying protons into the negative electrode at the time of an external short circuit, a carboxylic acid having a plurality of (for example, 2 to 4) carboxy groups per molecule is preferable.
- the carboxylic acid preferably contains at least one of a dicarboxylic acid (eg, succinic acid, adipic acid, isophthalic acid, terephthalic acid) and a tricarboxylic acid (eg, trimesic acid).
- the carboxylic acid may be an aliphatic carboxylic acid or an aromatic carboxylic acid.
- the aliphatic carboxylic acid include compounds in which a carboxy group is bonded to both ends of a linear saturated hydrocarbon group (for example, an alkylene group having 2 to 4 carbon atoms).
- Examples of such a compound include succinic acid, glutaric acid, adipic acid, oxalic acid, maleic acid, fumaric acid, tartaric acid, citric acid and the like.
- aromatic carboxylic acid examples include compounds in which 1 to 3 carboxy groups are bonded to one benzene ring.
- examples of such a compound include phthalic acid (ortho-form, meta-form, para-form), benzoic acid, benzenetricarboxylic acid (trimesic acid, trimellitic acid), salicylic acid and the like.
- carboxylic acid examples include succinic acid, adipic acid, benzoic acid, isophthalic acid, terephthalic acid, trimesic acid and the like.
- One type of carboxylic acid may be used alone, or two or more types may be used in combination.
- the amount of the organic acid filled in the predetermined gap in the battery may be 20 mg or more and 2000 mg or less, or 40 mg or more and 2000 mg or less, per 1 g of zinc derived from the negative electrode active material.
- the amount of the organic acid is within the above range, it is easy to fill a predetermined gap in the battery with the organic acid, and it is easy to obtain the effect of suppressing the temperature rise due to the external short circuit due to the organic acid.
- the additive contains at least an organic acid and may contain other components other than the organic acid.
- the other component may be a component (for example, polytetrafluoroethylene) that enhances the binding force of the solid organic acid, or may be used in combination with the powdered organic acid.
- the additive filled in the predetermined gap in the battery may be in the form of powder or pellet. Pellets are obtained, for example, by pressure molding a powdered organic acid or a mixture of a powdered organic acid and other components.
- a thin film for partial shielding (for example, cellophane) is placed between the negative electrode and the additive from the viewpoint of suppressing side reactions during normal use (normal temperature) and suppressing the penetration of the electrolytic solution into the additive. You may.
- the alkaline dry cell according to the present embodiment will be described in detail based on the drawings.
- the present invention is not limited to the following embodiments. Further, it can be appropriately changed as long as it does not deviate from the range in which the effect of the present invention is exhibited. Furthermore, it can be combined with other embodiments.
- FIG. 1 is a front view showing a horizontal half of the alkaline dry cell according to the embodiment of the present disclosure as a cross section.
- FIG. 2 is a front view showing a horizontal half of the alkaline dry cell according to another embodiment of the present disclosure as a cross section.
- 1 and 2 show an example of a cylindrical battery having an inside-out structure.
- the same components as those in FIG. 1 are designated by the same reference numerals.
- the alkaline dry cell includes a hollow cylindrical positive electrode 2, a gel-like negative electrode 3 arranged in the hollow portion of the positive electrode 2, a separator 4 arranged between them, and an alkaline electrolytic solution. Equipped with power generation elements including.
- the power generation element is housed in a bottomed cylindrical metal case 1 that also serves as a positive electrode terminal.
- case 1 for example, a nickel-plated steel plate is used.
- the positive electrode 2 is arranged in contact with the inner wall of the case 1. In order to improve the adhesion between the positive electrode 2 and the case 1, it is preferable that the inner surface of the case 1 is coated with a carbon film.
- the bottomed cylindrical separator 4 is composed of a cylindrical separator 4a and a bottom paper 4b.
- the separator 4a is arranged along the inner surface of the hollow portion of the positive electrode 2 and separates the positive electrode 2 and the negative electrode 3. Therefore, the separator arranged between the positive electrode and the negative electrode means a cylindrical separator 4a.
- the bottom paper 4b is arranged at the bottom of the hollow portion of the positive electrode 2, and separates the negative electrode 3 from the case 1.
- the sealing unit 9 includes a resin gasket 5, a negative electrode terminal plate 7 that also serves as a negative electrode terminal, and a negative electrode current collector 6.
- the negative electrode current collector 6 is inserted in the negative electrode 3.
- the material of the negative electrode current collector 6 is, for example, an alloy containing copper and zinc such as brass.
- the negative electrode current collector 6 may be plated, such as tin plating, if necessary.
- the negative electrode current collector 6 has a nail-like shape having a head and a body portion, and the body portion is inserted into a through hole provided in the central cylinder portion of the gasket 5, and the negative electrode current collector 6 has a negative electrode current collector 6.
- the head is welded to the flat portion in the center of the negative electrode terminal plate 7.
- the open end of the case 1 is crimped to the flange of the peripheral edge of the negative electrode terminal plate 7 via the outer peripheral end of the gasket 5.
- the outer surface of the case 1 is covered with the exterior label 8.
- the additive 10 containing an organic acid having a melting point of 90 ° C. or higher is filled.
- the additive 10 can be filled as a ring-shaped pellet containing an organic acid.
- the body of the negative electrode current collector 6 is arranged in the hollow portion of the pellet. Since the additive 10 is filled adjacent to the negative electrode 3, the organic acid contained in the additive 10 can be rapidly diffused into the negative electrode 3 at the time of an external short circuit.
- the additive 10 is preferably filled as pellets. Since the separator 4a adjacent to the additive 10 holds the electrolytic solution, the electrolytic solution in the separator 4a does not easily permeate into the additive 10.
- an organic acid having a melting point of 90 ° C. or higher is added to the gap between the gel-like negative electrode 3 and the bottom portion of the case 1 (the void portion formed by the convex portion of the positive electrode terminal at the bottom portion).
- the agent 20 may be filled. Since the additive 20 is filled adjacent to the negative electrode 3 via the bottom paper 4b, the organic acid contained in the additive 20 can be rapidly diffused into the negative electrode 3 at the time of an external short circuit.
- the additive 20 may be in the form of powder or pellets. Since the bottom paper 4 adjacent to the additive 20 holds the electrolytic solution, the electrolytic solution does not easily soak into the additive 20.
- the additive 20 of FIG. 2 may be filled together with the additive 10 of FIG. From the viewpoint of suppressing side reactions during normal use (normal temperature) and suppressing the infiltration of the electrolytic solution into the additive, between the gel-like negative electrode 3 and the additive 10 and / or the gel-like negative electrode 3 and the additive 20.
- a thin film for partial shielding (for example, cellophane) may be placed between the and (the position of the bottom paper 4b).
- the positive electrode 2 contains manganese dioxide, which is a positive electrode active material, and an electrolytic solution.
- manganese dioxide electrolytic manganese dioxide is preferable.
- Manganese dioxide is used in powder form.
- the average particle size (D50) of manganese dioxide is, for example, 20 ⁇ m or more and 60 ⁇ m or less from the viewpoint of easily ensuring the filling property of the positive electrode and the diffusivity of the electrolytic solution in the positive electrode.
- the BET specific surface area of manganese dioxide may be, for example, in the range of 20 m 2 / g or more and 50 m 2 / g or less.
- the average particle size (D50) is the median diameter in the volume-based particle size distribution.
- the average particle size is determined using, for example, a laser diffraction and / or scattering type particle size distribution measuring device.
- the BET specific surface area is a surface area measured and calculated using the BET formula, which is a theoretical formula for adsorption of multiple molecular layers.
- the BET specific surface area can be measured, for example, by using a specific surface area measuring device by a nitrogen adsorption method.
- the positive electrode 2 may contain a conductive agent in addition to manganese dioxide and an electrolytic solution.
- the conductive agent include carbon black such as acetylene black and conductive carbon materials such as graphite.
- carbon black such as acetylene black
- conductive carbon materials such as graphite.
- the conductive agent may be in the form of fibers or the like, but is preferably in the form of powder.
- the average particle size (D50) of the conductive agent can be selected from, for example, a range of 5 nm or more and 50 ⁇ m or less.
- the average particle size (D50) of the conductive agent is preferably 5 nm or more and 40 nm or less when the conductive agent is carbon black, and preferably 3 ⁇ m or more and 50 ⁇ m or less when the conductive agent is graphite.
- the content of the conductive agent in the positive electrode mixture is, for example, 3 parts by mass or more and 10 parts by mass or less, preferably 4 parts by mass or more and 8 parts by mass or less with respect to 100 parts by mass of manganese dioxide.
- the positive electrode 2 is obtained, for example, by pressure-molding a positive electrode mixture containing a positive electrode active material, a conductive agent, and an alkaline electrolytic solution into pellets.
- the positive electrode mixture may be once made into flakes or granules, classified if necessary, and then pressure-molded into pellets. After the pellets are housed in the case, they may be secondarily pressed so as to be in close contact with the inner wall of the case by using a predetermined instrument.
- the average density of manganese dioxide in the pellets of the positive electrode is, for example, 2.78 g / cm 3 or more and 3.08 g / cm 3 or less.
- the positive electrode (positive electrode mixture) may further contain other components (for example, polytetrafluoroethylene), if necessary.
- the negative electrode 3 has a gel-like morphology. That is, the negative electrode 3 usually contains a gelling agent in addition to the negative electrode active material and the electrolytic solution. Negative electrode active materials include zinc or zinc alloys. From the viewpoint of corrosion resistance, the zinc alloy preferably contains at least one selected from the group consisting of indium, bismuth and aluminum. As the electrolytic solution, an electrolytic solution contained in the positive electrode pellets can be used.
- the negative electrode active material is usually used in powder form.
- the average particle size (D50) of the negative electrode active material powder is, for example, 80 ⁇ m or more and 200 ⁇ m or less, preferably 100 ⁇ m or more and 150 ⁇ m or less.
- the content of the negative electrode active material powder in the negative electrode is, for example, 170 parts by mass or more and 220 parts by mass or less per 100 parts by mass of the electrolytic solution.
- a known gelling agent used in the field of alkaline dry batteries can be used without particular limitation, and for example, a water-absorbent polymer or the like can be used.
- examples of such a gelling agent include polyacrylic acid and sodium polyacrylate.
- the amount of the gelling agent added is, for example, 0.5 parts by mass or more and 2 parts by mass or less per 100 parts by mass of the negative electrode active material.
- a non-woven fabric or a microporous membrane is used.
- the material of the separator include cellulose and polyvinyl alcohol.
- the non-woven fabric for example, those mainly composed of fibers of these materials are used.
- the microporous membrane cellophane or the like is used.
- the thickness of the separator is, for example, 80 ⁇ m or more and 300 ⁇ m or less.
- the separator may be configured by stacking a plurality of sheets (nonwoven fabric or the like) so that the thickness is within the above range.
- the bottomed cylindrical separator 4 is composed of a cylindrical separator 4a and a bottom paper 4b, but is not limited thereto.
- a bottomed cylindrical integral body may be used, and a separator having a known shape used in the field of alkaline batteries can be used.
- an alkaline aqueous solution containing potassium hydroxide is used for the electrolytic solution.
- the concentration of potassium hydroxide in the electrolytic solution is, for example, 30% by mass or more and 50% by mass or less.
- the electrolytic solution may further contain zinc oxide.
- the concentration of zinc oxide in the electrolytic solution is, for example, 1% by mass or more and 5% by mass or less.
- the content of the electrolytic solution in the positive electrode mixture is, for example, 4 parts by mass or more and 15 parts by mass or less with respect to 100 parts by mass of manganese dioxide.
- Example 1 The AA cylindrical alkaline battery (LR6) shown in FIG. 1 was produced by the following procedure.
- a mixture was obtained by adding graphite powder (average particle size (D50) 8 ⁇ m) as a conductive agent to electrolytic manganese dioxide powder (average particle size (D50) 35 ⁇ m) which is a positive electrode active material.
- the mass ratio of the electrolytic manganese dioxide powder and the graphite powder was 92.4: 7.6.
- 1.5 parts by mass of the electrolytic solution was added to 100 parts by mass of the mixture, and the mixture was sufficiently stirred and then compression-molded into flakes to obtain a positive electrode mixture.
- As the electrolytic solution an alkaline aqueous solution containing potassium hydroxide (concentration 35% by mass) and zinc oxide (concentration 2% by mass) was used.
- the flake-shaped positive electrode mixture is crushed into granules, which are classified by a sieve of 10 to 100 mesh, and 11 g of the obtained granules are pressure-molded into a predetermined hollow cylindrical shape having an outer diameter of 13.65 mm. , Two positive electrode pellets were prepared.
- the negative electrode active material, the electrolytic solution, and the gelling agent were mixed to obtain a gel-like negative electrode 3.
- a zinc alloy powder particle size (D50) 130 ⁇ m) containing 0.02% by mass of indium, 0.01% by mass of bismuth, and 0.005% by mass of aluminum was used.
- the electrolytic solution the same electrolytic solution used for producing the positive electrode was used.
- the gelling agent a mixture of crosslinked branched polyacrylic acid and highly crosslinked chain polyacrylate sodium was used. The mass ratio of the negative electrode active material, the electrolytic solution, and the gelling agent was 100: 50: 1.
- the additive 10 was placed on the negative electrode 3.
- ring-shaped pellets obtained by pressure-molding the powdered organic acid shown in Table 1 were used.
- the filling amount of the organic acid was 40 mg per 1 g of zinc derived from the negative electrode active material.
- the separator 4 is configured by using a cylindrical separator 4a and a bottom paper 4b.
- a non-woven fabric sheet (basis weight 28 g / m 2 ) was used, which was mainly composed of rayon fiber and polyvinyl alcohol fiber having a mass ratio of 1: 1.
- the thickness of the non-woven fabric sheet used for the bottom paper 4b was 0.27 mm.
- the separator 4a was formed by triple-wrapping a non-woven fabric sheet having a thickness of 0.09 mm.
- the negative electrode current collector 6 was obtained by pressing a general brass (Cu content: about 65% by mass, Zn content: about 35% by mass) into a nail shape and then subjecting the surface to zinc plating. ..
- the diameter of the body of the negative electrode current collector 6 was 1.15 mm.
- the head of the negative electrode current collector 6 was electrically welded to the negative electrode terminal plate 7 made of nickel-plated steel plate. Then, the body of the negative electrode current collector 6 was press-fitted into the through hole at the center of the polyamide resin gasket 5. In this way, the sealing unit 9 including the gasket 5, the negative electrode terminal plate 7, and the negative electrode current collector 6 was manufactured.
- the sealing unit 9 was installed in the opening of the case 1.
- the body of the negative electrode current collector 6 was passed through the hollow portion of the ring-shaped pellet (additive 10) and inserted into the negative electrode 3.
- the opening end of the case 1 was crimped to the peripheral edge of the negative electrode terminal plate 7 via the gasket 5, and the opening of the case 1 was sealed.
- the outer surface of the case 1 was covered with the exterior label 8. In this way, an alkaline dry battery A1 in which the gap between the negative electrode and the sealing unit was filled with an additive was produced.
- Examples 2 to 6 Batteries A2 to A6 of Examples 2 to 6 were prepared by the same method as the battery A1 of Example 1 except that the compounds shown in Table 1 were used as the organic acid.
- Examples 7 to 8 The batteries A7 to A8 of Examples 7 to 8 were produced by the same methods as those of the battery A1 of Example 1 and the battery A4 of Example 4, except that the filling amount of the organic acid was set to the value shown in Table 1.
- Examples 9 to 10 Instead of filling the additive 10, the concave portion at the bottom of the case was filled with a powdered organic acid as the additive 20.
- the batteries A9 to A10 of Examples 9 to 10 shown in FIG. 2) in which the additive was filled in the gap between the negative electrode and the bottom of the case by the same method as the batteries A7 to A8 of Examples 7 to 8, respectively. Batteries) were manufactured.
- Comparative Example 1 The battery X1 of Comparative Example 1 was produced by the same method as that of the battery A1 of Example 1 except that the gap between the negative electrode and the sealing unit was not filled with the additive (organic acid).
- Comparative Examples 2 to 6 Comparative Example by the same method as the battery A1 of Example 1 except that the compound shown in Table 1 was contained in the negative electrode instead of filling the gap between the negative electrode and the sealing unit with an additive (organic acid). Batteries X2 to X6 of 2 to 6 were manufactured.
- the filling amount in Table 1 is the amount (mg) of the organic acid to be filled per 1 g of zinc derived from the negative electrode active material contained in the negative electrode.
- the temperature rise at the time of an external short circuit was suppressed as compared with the batteries X1 to X6 of the comparative example.
- the maximum temperature at the time of external short circuit was A6 ⁇ A4, A5 ⁇ A3.
- benzoic acid one carboxy group per molecule
- terephthalic acid and isophthalic acid two carboxy groups per molecule
- trimesic acid three carboxy groups per molecule was used. The larger the number of carboxy groups per molecule of the aromatic carboxylic acid, the greater the effect of suppressing the temperature rise at the time of external short circuit was observed.
- the concentration of hydroxide ions in the negative electrode did not decrease during an external short circuit, so that the battery temperature increased during an external short circuit. ..
- the alkaline dry cell according to the present disclosure is suitably used as a power source for, for example, portable audio equipment, electronic games, lights and the like.
Abstract
Description
前記負極と前記封口ユニットとの隙間および/または前記負極と前記ケースの底部との隙間に、添加剤が充填され、前記添加剤は、融点が90℃以上の有機酸を含む、アルカリ乾電池に関する。
以下、本開示を実施例および比較例に基づいて具体的に説明するが、本発明は以下の実施例に限定されるものではない。
下記の手順により、図1に示す単3形の円筒形アルカリ乾電池(LR6)を作製した。
正極活物質である電解二酸化マンガン粉末(平均粒径(D50)35μm)に、導電剤である黒鉛粉末(平均粒径(D50)8μm)を加え、混合物を得た。電解二酸化マンガン粉末および黒鉛粉末の質量比は92.4:7.6とした。混合物100質量部に電解液1.5質量部を加え、充分に攪拌した後、フレーク状に圧縮成形して、正極合剤を得た。電解液には、水酸化カリウム(濃度35質量%)および酸化亜鉛(濃度2質量%)を含むアルカリ水溶液を用いた。
負極活物質と、電解液と、ゲル化剤とを混合し、ゲル状の負極3を得た。負極活物質には、0.02質量%のインジウムと、0.01質量%のビスマスと、0.005質量%のアルミニウムとを含む亜鉛合金粉末(粒径(D50)130μm)を用いた。電解液には、正極の作製で用いた電解液と同じものを用いた。ゲル化剤には、架橋分岐型ポリアクリル酸および高架橋鎖状型ポリアクリル酸ナトリウムの混合物を用いた。負極活物質と、電解液と、ゲル化剤との質量比は、100:50:1とした。
ニッケルめっき鋼板製の有底円筒形のケース(外径13.80mm、円筒部の肉厚0.15mm、高さ50.3mm)の内面に日本黒鉛(株)製のバニーハイトを塗布し、厚み約10μmの炭素被膜を形成し、ケース1を得た。ケース1内に正極ペレットを縦に2個挿入した後、加圧して、ケース1の内壁に密着した状態の正極2を形成した。有底円筒形のセパレータ4を正極2の内側に配置した後、電解液を注入し、セパレータ4に含浸させた。電解液には、正極の作製に用いた電解液と同じものを用いた。この状態で所定時間放置し、電解液をセパレータ4から正極2へ浸透させた。
有機酸として表1に示す化合物を用いた以外、実施例1の電池A1と同様の方法により実施例2~6の電池A2~A6を作製した。
有機酸の充填量を表1に示す値とした以外、実施例1の電池A1および実施例4の電池A4と同様の方法により、それぞれ、実施例7~8の電池A7~A8を作製した。
添加剤10を充填する代わりに、ケース底部の凹部に添加剤20として粉末状の有機酸を充填した。上記以外、実施例7~8の電池A7~A8と同様の方法により、それぞれ、負極とケース底部との隙間に添加剤が充填された実施例9~10の電池A9~A10(図2に示す電池)を作製した。
負極と封口ユニットとの隙間に添加剤(有機酸)を充填しなかった以外、実施例1の電池A1と同様の方法により比較例1の電池X1を作製した。
負極と封口ユニットとの隙間に添加剤(有機酸)を充填する代わりに、有機酸として表1に示す化合物を負極内に含ませた以外、実施例1の電池A1と同様の方法により比較例2~6の電池X2~X6を作製した。
上記で作製した各電池について、外部短絡させた時の電池の表面温度を測定し、その時の最高温度を求めた。評価結果を表1に示す。なお、表1中の充填量は、負極に含まれる負極活物質に由来する亜鉛1g当たりに充填される有機酸の量(mg)である。
2 正極
3 負極
4 有底円筒形のセパレータ
4a 円筒型のセパレータ
4b 底紙
5 ガスケット
6 負極集電体
7 負極端子板
8 外装ラベル
9 封口ユニット
10,20 添加剤
Claims (5)
- 有底円筒形のケースと、
前記ケースに内接する中空円筒形の正極と、
前記正極の中空部内に充填され、亜鉛を含む負極活物質を含む負極と、
前記正極と前記負極との間に配されるセパレータと、
前記正極、前記負極および前記セパレータに含まれるアルカリ電解液と、
前記ケースの開口を覆う封口ユニットと、
を備え、
前記負極と前記封口ユニットとの隙間および/または前記負極と前記ケースの底部との隙間に、添加剤が充填され、
前記添加剤は、融点が90℃以上の有機酸を含む、アルカリ乾電池。 - 前記有機酸は、カルボン酸を含む、請求項1に記載のアルカリ乾電池。
- 前記カルボン酸は、1分子当たり4個以下のカルボキシ基を有する、請求項2に記載のアルカリ乾電池。
- 前記カルボン酸は、コハク酸、アジピン酸、安息香酸、イソフタル酸、テレフタル酸およびトリメシン酸からなる群より選択される少なくとも1種を含む、請求項2に記載のアルカリ乾電池。
- 前記有機酸は、前記負極活物質に由来する亜鉛の1g当たり、20mg以上、2000mg以下含まれる、請求項1~4のいずれか1項に記載のアルカリ乾電池。
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53146139A (en) * | 1977-05-26 | 1978-12-19 | Seiko Instr & Electronics | Enclosed alkaline battery |
JPH08153499A (ja) * | 1994-02-07 | 1996-06-11 | Seiko Instr Inc | アルカリ電池 |
WO2010044176A1 (ja) * | 2008-10-17 | 2010-04-22 | パナソニック株式会社 | アルカリ電池 |
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53146139A (en) * | 1977-05-26 | 1978-12-19 | Seiko Instr & Electronics | Enclosed alkaline battery |
JPH08153499A (ja) * | 1994-02-07 | 1996-06-11 | Seiko Instr Inc | アルカリ電池 |
WO2010044176A1 (ja) * | 2008-10-17 | 2010-04-22 | パナソニック株式会社 | アルカリ電池 |
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