JP4199811B2 - アルカリ乾電池 - Google Patents
アルカリ乾電池 Download PDFInfo
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- JP4199811B2 JP4199811B2 JP2007006034A JP2007006034A JP4199811B2 JP 4199811 B2 JP4199811 B2 JP 4199811B2 JP 2007006034 A JP2007006034 A JP 2007006034A JP 2007006034 A JP2007006034 A JP 2007006034A JP 4199811 B2 JP4199811 B2 JP 4199811B2
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- zinc alloy
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- 229910001297 Zn alloy Inorganic materials 0.000 claims description 98
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims description 68
- 239000004745 nonwoven fabric Substances 0.000 claims description 67
- 229910052782 aluminium Inorganic materials 0.000 claims description 52
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 51
- 239000003792 electrolyte Substances 0.000 claims description 48
- 229910052738 indium Inorganic materials 0.000 claims description 41
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 37
- 239000007773 negative electrode material Substances 0.000 claims description 33
- 229920000298 Cellophane Polymers 0.000 claims description 22
- 229910052797 bismuth Inorganic materials 0.000 claims description 19
- 229910001415 sodium ion Inorganic materials 0.000 claims description 19
- 229920000098 polyolefin Polymers 0.000 claims description 18
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 17
- 230000035699 permeability Effects 0.000 claims description 17
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 15
- 239000002612 dispersion medium Substances 0.000 claims description 14
- 229920000058 polyacrylate Polymers 0.000 claims description 14
- 229920000642 polymer Polymers 0.000 claims description 14
- 239000003349 gelling agent Substances 0.000 claims description 12
- 239000012982 microporous membrane Substances 0.000 claims description 12
- 239000007774 positive electrode material Substances 0.000 claims description 11
- OSOVKCSKTAIGGF-UHFFFAOYSA-N [Ni].OOO Chemical compound [Ni].OOO OSOVKCSKTAIGGF-UHFFFAOYSA-N 0.000 claims description 6
- 229910000483 nickel oxide hydroxide Inorganic materials 0.000 claims description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 70
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 42
- 239000000843 powder Substances 0.000 description 41
- 239000011787 zinc oxide Substances 0.000 description 35
- -1 zincate ions Chemical class 0.000 description 33
- 239000011701 zinc Substances 0.000 description 29
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 28
- 238000012360 testing method Methods 0.000 description 27
- 239000000203 mixture Substances 0.000 description 26
- 229910052725 zinc Inorganic materials 0.000 description 21
- 239000004698 Polyethylene Substances 0.000 description 19
- 239000008188 pellet Substances 0.000 description 19
- 229920000573 polyethylene Polymers 0.000 description 19
- 239000011245 gel electrolyte Substances 0.000 description 17
- 239000012528 membrane Substances 0.000 description 17
- 239000007789 gas Substances 0.000 description 16
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 15
- 239000008151 electrolyte solution Substances 0.000 description 15
- 239000007864 aqueous solution Substances 0.000 description 14
- 230000000694 effects Effects 0.000 description 13
- 239000002131 composite material Substances 0.000 description 12
- 230000007797 corrosion Effects 0.000 description 12
- 238000005260 corrosion Methods 0.000 description 12
- 238000011156 evaluation Methods 0.000 description 12
- 238000001226 reprecipitation Methods 0.000 description 12
- 229920002125 Sokalan® Polymers 0.000 description 10
- 238000011049 filling Methods 0.000 description 10
- 239000007788 liquid Substances 0.000 description 10
- 239000004584 polyacrylic acid Substances 0.000 description 10
- 239000000243 solution Substances 0.000 description 10
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 9
- 229920000433 Lyocell Polymers 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 239000002245 particle Substances 0.000 description 9
- 239000011241 protective layer Substances 0.000 description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 8
- 229910002804 graphite Inorganic materials 0.000 description 8
- 239000010439 graphite Substances 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 7
- 239000000835 fiber Substances 0.000 description 7
- 239000012535 impurity Substances 0.000 description 7
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- 230000007423 decrease Effects 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 239000003513 alkali Substances 0.000 description 5
- 239000013078 crystal Substances 0.000 description 5
- 150000002500 ions Chemical class 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 238000004804 winding Methods 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 229920002978 Vinylon Polymers 0.000 description 3
- 230000002411 adverse Effects 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- 238000005868 electrolysis reaction Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 229940057995 liquid paraffin Drugs 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
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- 238000007789 sealing Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000006277 sulfonation reaction Methods 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 239000011149 active material Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 229940099596 manganese sulfate Drugs 0.000 description 2
- 239000011702 manganese sulphate Substances 0.000 description 2
- 235000007079 manganese sulphate Nutrition 0.000 description 2
- SQQMAOCOWKFBNP-UHFFFAOYSA-L manganese(II) sulfate Chemical compound [Mn+2].[O-]S([O-])(=O)=O SQQMAOCOWKFBNP-UHFFFAOYSA-L 0.000 description 2
- 239000011812 mixed powder Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000002964 rayon Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 229920002379 silicone rubber Polymers 0.000 description 2
- 239000004945 silicone rubber Substances 0.000 description 2
- BSWGGJHLVUUXTL-UHFFFAOYSA-N silver zinc Chemical compound [Zn].[Ag] BSWGGJHLVUUXTL-UHFFFAOYSA-N 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- GOPYZMJAIPBUGX-UHFFFAOYSA-N [O-2].[O-2].[Mn+4] Chemical class [O-2].[O-2].[Mn+4] GOPYZMJAIPBUGX-UHFFFAOYSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000010306 acid treatment Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000004453 electron probe microanalysis Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009689 gas atomisation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000010220 ion permeability Effects 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
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- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 125000001174 sulfone group Chemical group 0.000 description 1
- HIFJUMGIHIZEPX-UHFFFAOYSA-N sulfuric acid;sulfur trioxide Chemical compound O=S(=O)=O.OS(O)(=O)=O HIFJUMGIHIZEPX-UHFFFAOYSA-N 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Images
Classifications
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- 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
-
- 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
- H01M4/06—Electrodes for primary cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
-
- 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
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/449—Separators, membranes or diaphragms characterised by the material having a layered structure
-
- 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
- H01M50/489—Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
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- 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
- H01M50/489—Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
- H01M50/494—Tensile strength
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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- H—ELECTRICITY
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- H01M2300/00—Electrolytes
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- H01M2300/0014—Alkaline electrolytes
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- H—ELECTRICITY
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- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/50—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
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- 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
Description
Zn+2OH−→ZnO+H2O+2e− (1)
Zn+4OH−→Zn(OH)4 2−+2e− (2)
<再析出反応>
Zn(OH)4 2−→ZnO+H2O+2OH− (3)
この推定メカニズムを踏まえ、本願発明者らは、不織布セパレータの厚みに関する検討を実施した。この結果、不織布セパレータの合計厚みが所定の厚み以上あれば、低温のローレート放電時に酸化亜鉛の再析出がセパレータ繊維の中で進行しても、それが正・負極間を貫通して内部短絡するには至らないことが判明した。一方、不織布セパレータの合計厚みがある厚みを超えるとハイレートのパルス放電に弊害が生ずる点も明らかとなった。そこで本発明のある実施形態では、セパレータとして1枚または複数枚の不織布を所定の厚みの範囲になるように設定することで、内部短絡の問題を解決し各種放電特性を確保することとした。
まず、インジウムの含有量が少ない亜鉛合金粉の腐食ガス発生度合いを把握するための予備実験を行った。
上述の予備実験の結果を踏まえ、アルミニウムとインジウムの含有量を種々に変化させた亜鉛合金粉に関する電池での評価を行った。
作製した各種類の電池の各20セル(未放電品)を60℃で相対湿度90%の環境下に1ヶ月間保存して、漏液した電池数により漏液の発生指数(%)を求めた。
下記の(a)〜(d)のパターンでローレート放電試験を行い、各種類の電池の試験数をn=10として、放電時間が規定時間の2/3以下であった早期寿命の電池の個数を調べた。
作製した各種類の電池1セルを、20℃雰囲気下で1000mWの定電力で連続放電させて、電池電圧が0.9Vに達するまでの放電時間を測定した。表4中の結果には、試験数n=3で行った平均値について、電池A1の放電時間を100として規格化した値を示している。
Zn+2OH−→ZnO+H2O+2e− (1)
Zn+4OH−→Zn(OH)4 2−+2e− (2)
<再析出反応>
Zn(OH)4 2−→ZnO+H2O+2OH− (3)
亜鉛合金中のアルミニウム量が0.008質量%以上であっても、セパレータ構成を不織布3枚重ねと、セパレータ合計厚みが大きく隔絶性を高めた形にした電池F1〜S1では、放電パターン(d)でも電池寿命が早期に終了してしまう現象が発生しない。つまり、上記の内部短絡現象は、セパレータの隔絶性によっては回避可能な事象と推察される。
続いて、不織布セパレータの厚みや枚数・巻き数等に関する、より詳細な検討を行った。
作製した電池1セルを、20℃雰囲気下で、1Ωの抵抗に対して100ミリ秒だけ接続し、この間の閉路電圧(CCV)をオシロスコープで測定した。それぞれの電池が1Ω接続(100ミリ秒)の間に到達した最低の電圧を読み取り、試験数n=3で行った平均値をCCV値とした。
ここでは、セパレータに、セロファン膜と不織布とを併用する検討を行った。
ここでは、セパレータに、親水性ポリオレフィン膜と不織布とを併用する検討を行った。
1.ポリエチレン膜に濡れ性を付与するため、花王(株)製の「エマルゲン709」を用いて表面に界面活性剤処理を実施した。
ここでは、亜鉛合金中のビスマス量に関する検討を行った。
ここでは、電解二酸化マンガン中に含まれるナトリウムイオンや硫酸イオンの量に関する検討を行った。
実施例1〜6では、負極活物質の粒度を35〜300メッシュ(75μm以下の微粉比率:25%)に統一したが、本発明自体はこれに限定されるものではなく、各種粒度の亜鉛合金粉を負極活物質としたアルカリ乾電池に適用可能である。
2 黒鉛塗装膜
3 正極合剤ペレット
4 セパレータ
5 絶縁キャップ
6 ゲル状負極
7 樹脂製封口板
8 底板
9 絶縁ワッシャ
10 負極集電体
11 外装ラベル
21 試験管
22 亜鉛負極
23 流動パラフィン
24 シリコーンゴム栓
25 恒温槽
26 ピペット
Claims (13)
- 正極と、負極と、セパレータと、を備え、
前記負極は、負極活物質である亜鉛合金と、分散媒であるゲル状アルカリ電解液とを含み、
前記亜鉛合金は、インジウムを0.0001質量%以上0.015質量%以下、アルミニウムを0.008質量%以上0.02質量%以下含んでおり、
前記ゲル状アルカリ電解液は、ゲル化剤である架橋ポリアクリル酸塩型吸水性ポリマーを0.5質量%以上3質量%以下含んでおり、
前記セパレータは、1枚または重ねられた複数枚の不織布であって、厚みが360μm以上880μm以下であることを特徴とするアルカリ乾電池。 - 前記セパレータは、通気度が0.5mL/cm2・秒以上5mL/cm2・秒以下である、請求項1記載のアルカリ乾電池。
- 前記亜鉛合金は、ビスマスを0.005質量%以上0.03質量%以下含むことを特徴とする、請求項1記載のアルカリ乾電池。
- 前記正極は、電解二酸化マンガン、または電解二酸化マンガンとオキシ水酸化ニッケル、を正極活物質とし、
前記電解二酸化マンガンに含まれるナトリウムイオンの量が0.5質量%以下、硫酸イオンの量が1.5質量%以下である、請求項1記載のアルカリ乾電池。 - 正極と、負極と、セパレータと、を備え、
前記負極は、負極活物質である亜鉛合金と、分散媒であるゲル状アルカリ電解液とを含み、
前記亜鉛合金は、インジウムを0.0001質量%以上0.015質量%以下、アルミニウムを0.008質量%以上0.02質量%以下含んでおり、
前記ゲル状アルカリ電解液は、ゲル化剤である架橋ポリアクリル酸塩型吸水性ポリマーを0.5質量%以上3質量%以下含んでおり、
前記セパレータは、不織布とセロファン膜とを重ね合わせたものであることを特徴とするアルカリ乾電池。 - 前記セロファン膜は、引張り強さが30N/15mm以上である、請求項5記載のアルカリ乾電池。
- 前記亜鉛合金は、ビスマスを0.005質量%以上0.03質量%以下含むことを特徴とする、請求項5記載のアルカリ乾電池。
- 前記正極は、電解二酸化マンガン、または電解二酸化マンガンとオキシ水酸化ニッケル、を正極活物質とし、
前記電解二酸化マンガンに含まれるナトリウムイオンの量が0.5質量%以下、硫酸イオンの量が1.5質量%以下である、請求項5記載のアルカリ乾電池。 - 正極と、負極と、セパレータと、を備え、
前記負極は、負極活物質である亜鉛合金と、分散媒であるゲル状アルカリ電解液とを含み、
前記亜鉛合金は、インジウムを0.0001質量%以上0.015質量%以下、アルミニウムを0.008質量%以上0.02質量%以下含んでおり、
前記ゲル状アルカリ電解液は、ゲル化剤である架橋ポリアクリル酸塩型吸水性ポリマーを0.5質量%以上3質量%以下含んでおり、
前記セパレータは、不織布と親水性ポリオレフィン微多孔膜とを重ね合わせたものであることを特徴とするアルカリ乾電池。 - 前記親水性ポリオレフィン微多孔膜は、引張り強さが、30N/15mm以上である、請求項9記載のアルカリ乾電池。
- 前記亜鉛合金は、ビスマスを0.005質量%以上0.03質量%以下含むことを特徴とする、請求項9記載のアルカリ乾電池。
- 前記正極は、電解二酸化マンガン、または電解二酸化マンガンとオキシ水酸化ニッケル、を正極活物質とし、
前記電解二酸化マンガンに含まれるナトリウムイオンの量が0.5質量%以下、硫酸イオンの量が1.5質量%以下である、請求項9記載のアルカリ乾電池。 - 正極と、負極と、セパレータとを備えた単三型のアルカリ乾電池であって、
前記負極は、負極活物質である亜鉛合金と、分散媒であるゲル状アルカリ電解液とを含み、
前記亜鉛合金は、インジウムを0.0001質量%以上0.015質量%以下、アルミニウムを0.008質量%以上0.02質量%以下含んでおり、
前記ゲル状アルカリ電解液は、ゲル化剤である架橋ポリアクリル酸塩型吸水性ポリマーを0.5質量%以上3質量%以下含んでおり、
前記セパレータは、1枚または重ねられた複数枚の不織布であって厚みが360μm以上880μm以下である、又は、不織布とセロファン膜とを重ね合わせたものである、又は、不織布と親水性ポリオレフィン微多孔膜とを重ね合わせたものであり、
0℃において300Ωの抵抗に接続し、連続して放電させた際に、電圧が1.0Vにまで降下する経過時間が500時間以上であることを特徴とするアルカリ乾電池。
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JP2007006034A JP4199811B2 (ja) | 2007-01-15 | 2007-01-15 | アルカリ乾電池 |
EP08150119A EP1959023B1 (en) | 2007-01-15 | 2008-01-09 | Alkaline dry battery |
US11/971,495 US20080171266A1 (en) | 2007-01-15 | 2008-01-09 | Alkaline dry battery |
CN2008100021271A CN101227001B (zh) | 2007-01-15 | 2008-01-15 | 碱性干电池 |
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JP2007006034A JP4199811B2 (ja) | 2007-01-15 | 2007-01-15 | アルカリ乾電池 |
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US (1) | US20080171266A1 (ja) |
EP (1) | EP1959023B1 (ja) |
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CN (1) | CN101227001B (ja) |
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-
2008
- 2008-01-09 US US11/971,495 patent/US20080171266A1/en not_active Abandoned
- 2008-01-09 EP EP08150119A patent/EP1959023B1/en not_active Not-in-force
- 2008-01-15 CN CN2008100021271A patent/CN101227001B/zh not_active Expired - Fee Related
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US8722228B2 (en) | 2011-04-08 | 2014-05-13 | Empire Technology Development Llc | Moisture activated battery |
US8735001B2 (en) | 2011-04-08 | 2014-05-27 | Empire Technology Development Llc | Gel formed battery |
US8744593B2 (en) | 2011-04-08 | 2014-06-03 | Empire Technology Development Llc | Gel formed battery |
US8828581B2 (en) | 2011-04-08 | 2014-09-09 | Empire Technology Development Llc | Liquid battery formed from encapsulated components |
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JP2008171767A (ja) | 2008-07-24 |
EP1959023A1 (en) | 2008-08-20 |
CN101227001A (zh) | 2008-07-23 |
EP1959023B1 (en) | 2010-05-26 |
US20080171266A1 (en) | 2008-07-17 |
CN101227001B (zh) | 2011-09-21 |
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