EP0582293A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Alkaline battery, production method of alkaline battery, and applied product using alkaline battery
Assignee: Seiko Electronic Components Ltd
•
Filing: 1993-08-04
•
Granted: —
•
Expires: 2013-08-04
Abstract
Abstract This invention relates to an alkaline battery in which hydrogen gas evolution and deterioration of battery performance can be prevented by using a collector having an outermost layer coated with zinc or metal having a higher hydrogen overvoltage than that of zinc and adding an inhibitor selected from an indium compound, lead oxide, a hydroxide of alkaline earth metal and polyoxyethylen alkylamide to an electrolyte solution or a negative electrode active material. According to the present invention, it is possible to manufacture an alkaline battery in which evolution of hydrogen can be restrained without involving deterioration of battery performances. Especially, the present invention is effective in a coin type and a button type battery which is sensitive to the evolution of gas and is required to have high performance. Further, the inventive collector which is plated with zinc alloy more than 3 µ m in thickness and used for low drain such as watches can attain a capacity equivalent to or more than that of a battery using amalgamated zinc. Further, watches loaded with the inventive alkaline batteries which are discarded do not pollute the environment, as they do not include mercury to be a pollution material.
Inventors
- 👤 Shunji c/o Seiko Instruments Inc. Watanabe
- 👤 Tsugio c/o Seiko Electronic Components Ltd Sakai
- 👤 Hideo C/O Seiko Electronic Components Ltd Sakamoto
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 17:48
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/04; H01M6/045; H01M10/00; H01M10/24; H01M10/26; H01M4/00; H01M4/02; H01M4/06; H01M4/36; H01M4/38; H01M4/42; H01M4/62; H01M4/628; H01M4/64; H01M4/66; H01M6/06; H01M2300/00; H01M2300/0002; H01M2300/0014; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 52
Claim 1
Independent Claim
35 words
An alkaline battery comprising: mercuryless zinc powder as a negative electrode active material; and an electrolyte solution, the electrolyte Solution being added with any one species selected from indium sulfate, indium sulfamate and indium chloride.
Claim 2
Dependent Claim
33 words
An alkaline battery comprising: mercuryless zinc powder as a negative electrode active material, the negative electrode active material being added with any one species selected from indium sulfate, indium sulfamate and indium chloride.
Claim 3
Dependent Claim
30 words
An alkaline battery comprising: mercuryless zinc powder as a negative electrode active material; and an electrolyte solution, the electrolyte solution being added with an indium compound and a complexing agent.
Claim 4
Dependent Claim
21 words
An alkaline battery according to claim 3 wherein said complexing agent is any one species selected from tartarate, EDTA and cyanate.
Claim 5
Dependent Claim
27 words
A method for producing alkaline batteries according to claim 3 comprising: a step for dissolving a complexing agent in the electrolyte solution prior to the indium compound.
Claim 6
Dependent Claim
28 words
An alkaline battery comprising: mercuryless zinc powder as a negative electrode active material, the negative electrode active material being added with an indium compound and a complexing agent.
Claim 7
Dependent Claim
21 words
An alkaline battery according to claim 6 wherein said complexing agent is any one species selected from tartarate, EDTA and cyanate.
Claim 8
Dependent Claim
43 words
An alkaline battery comprising; mercuryless zinc powder as a negative electrode active material; and an electrolyte solution, the electrolyte solution being added with two or more speices of compounds selected from an indium compound, a tin compound containing tetravalent tin, and lead oxide.
Claim 9
Dependent Claim
21 words
An alkaline battery according to claim 8 wherein said indium compound is indium sulfate, indium sulfamate, indium chloride and indium hydroxide.
Claim 10
Dependent Claim
27 words
An alkaline battery according to claim 8 wherein said tetravalent tin compound is a stannate such as potassium stannate, sodium stannate or the like and stannic oxide.
Claim 11
Dependent Claim
41 words
An alkaline battery comprising: mercuryless zinc powder as a negative electrode active material, the negative electrode active material being added with two or more species of compounds selected from an indium compound, a tin compound containing tetravalent tin, and lead oxide.
Claim 12
Dependent Claim
21 words
An alkaline battery according to claim 11 wherein said indium compound is indium sulfate, indium sulfamate, indium chloride and indium hydroxide.
Claim 13
Dependent Claim
27 words
An alkaline battery according to claim 11 wherein said tetravalent tin compound is a stannate such as potassium stannate, sodium stannate or the like and stannic oxide.
Claim 14
Dependent Claim
45 words
An alkaline battery comprising: mercuryless zinc powder containing indium as a negative electrode active material; and an electrolyte solution, the electrolyte solution being added with one or more species of compounds selected from an indium compound, a tin compound containing tetravalent tin, and lead oxide.
Claim 15
Dependent Claim
43 words
An alkaline battery comprising: mercuryless zinc powder containing indium as a negative electrode active material, the negative electrode active material being added with one or more species of compounds selected from an indium compound, a tin compound containing tetravalent tin, and lead oxide.
Claim 16
Dependent Claim
63 words
An alkaline battery comprising: mercuryless zinc powder as a negative electrode active material, a concentration of iron included in the mercuryless zinc powder being not more than 4 ppm with respect to zinc; and an electrolyte solution, the electrolyte solution being added with one or more species of compounds selected from an indium compound, a thin compound containing tetravalent tin, and lead oxide.
Claim 17
Dependent Claim
61 words
An alkaline battery comprising: mercuryless zinc powder as a negative electrode active material, a concentration of iron included in the mercuryless zinc powder being not more than 4 ppm with respect to zinc, the negative electrode active material being added with one or more species of compounds selected from an indium compound, a tin compound containing tetravalent tin, and lead oxide.
Claim 18
Dependent Claim
100 words
A silver oxide battery comprising: mercuryless zinc as a negative electrode active material, the mercuryless zinc containing at least one species of metal selected from the group consisting of 0.001-0.5 % by weight of gallium, 0.005-0.5 % by weight of indium, 0.0001-0.5 % by weight of lead, 0.005-0.5 % by weight of bismuth, 0.001-0.5 % by weight of aluminum, and 0.001-0.5 % by weight of calcium, and the balance comprising zinc and inevitable impurities; an amount of water in the battery being 0.31-0.57 mg per a weight of 1 mg of the mercuryless zinc; and an electrolyte being potassium hydroxide.
Claim 19
Dependent Claim
100 words
A silver oxide battery comprising: mercuryless zinc as a negative electrode active material, the mercuryless zinc containing at least one species of metal selected from the group consisting of 0.001-0.5 % by weight of gallium, 0.005-0.5 % by weight of indium, 0.0001-0.5 % by weight of lead, 0.005-0.5 % by weight of bismuth, 0.001-0.5 % by weight of aluminum, and 0.001-0.5 % by weight of calcium, and the balance comprising zinc and inevitable impurities; an amount of water in the battery being 0.32-0.59 mg per a weight of 1 mg of the mercuryless zinc; and an electrolyte being sodium hydroxide.
Claim 20
Dependent Claim
72 words
An alkaline battery comprising: mercuryless zinc powder containing a gelling agent as a negative electrode active material; an outermost layer of a collector comprising a layer of zinc or metal having a hydrogen overvoltage higher than that of zinc; and an electrolyte solution, the electrolyte solution being added with one or more species of materials selected from an indium compound, lead oxide, hydroxide of alkaline earth metal, a surfactant having polyethylene oxide.
Claim 21
Dependent Claim
28 words
The alkaline battery according to claim 20 wherein said zinc gelling agent is a cross-linked type polyacrylic water-absorbing polymer alone or a combination thereof with other gelling agents.
Claim 22
Dependent Claim
62 words
The alkaline battery according to claim 20 wherein said mercuryless zinc powder is mercuryless zinc powder containing at least one species of the group of 0.001-0.5 % by weight of gallium, 0.005-0.5 % by weight of indium, 0.0001-0.5 % by weight of lead, 0.005-0.5 % by weight of bismuth, 0.001-0.5 % by weight of aluminum, and 0.001-0.5 % by weight of calcium.
Claim 23
Dependent Claim
39 words
The alkaline battery according to claim 20 wherein said layer of zinc or metal having a hydrogen overvoltage higher than that of zinc is one or more species of metal or alloy selected from zinc, indium, tin and lead.
Claim 24
Dependent Claim
21 words
The alkaline battery according to claim 20 wherein said indium compound is indium sulfate, indium sulfamate, indium chloride and indium hydroxide.
Claim 25
Dependent Claim
17 words
The alkaline battery according to claim 20 wherein said hydroxide of alkaline earth metal is barium hydroxide.
Claim 26
Dependent Claim
42 words
The alkaline battery according to claim 20 wherein said surfactant having polyethylene oxide is added with one or more species of materials selected from a surfactant having fluorocarbon at the hydrophobic portion and polyethylene oxide at the hydrophilic portion, or polyoxyethylene alkylamide.
Claim 27
Dependent Claim
71 words
An alkaline battery comprising: mercuryless zinc powder containing a gelling agent as a negative electrode active material, the negative electrode active material being added with one or more species of materials selected from an indium compound, lead oxide, hydroxide of alkaline earth metal, a surfactant having polyethylene oxide; and an outermost layer of a collector comprising a layer of zinc or metal having a hydrogen overvoltage higher than that of zinc.
Claim 28
Dependent Claim
28 words
The alkaline battery according to claim 27 wherein said zinc gelling agent is a cross-linked type polyacrylic water-absorbing polymer alone or a combination thereof with other gelling agents.
Claim 29
Dependent Claim
62 words
The alkaline battery according to claim 27 wherein said mercuryless zinc powder is mercuryless zinc powder containing at least one species of the group of 0.001-0.5 % by weight of gallium, 0.005-0.5 % by weight of indium, 0.0001-0.5 % by weight of lead, 0.005-0.5 % by weight of bismuth, 0.001-0.5 % by weight of aluminum, and 0.001-0.5 % by weight of calcium.
Claim 30
Dependent Claim
39 words
The alkaline battery according to claim 27 wherein said layer of zinc or metal having a hydrogen overvoltage higher than that of zinc is one or more species of metal or alloy selected from zinc, indium, tin and lead.
Claim 31
Dependent Claim
21 words
The alkaline battery according to claim 27 wherein said indium compound is indium sulfate, indium sulfamate, indium chloride or indium hydroxide.
Claim 32
Dependent Claim
17 words
The alkaline battery according to claim 27 wherein said hydroxide of alkaline earth metal is barium hydroxide.
Claim 33
Dependent Claim
44 words
The alkaline battery according to claim 28 characterized in that said surfactant having polyethylene oxide is added with one or more species of materials selected from a surfactant having fluorocarbon at the hydrophobic portion and polyethylene oxide at the hydrophilic portion, or polyoxyethylene alkylamide.
Claim 34
Dependent Claim
46 words
An alkaline battery comprising: mercuryless zinc powder as a negative electrode active material; and an outermost layer of a collector comprising art alloy layer containing zinc as an essential element, and containing one or more species selected from indium, lead and tin as a selective element.
Claim 35
Dependent Claim
21 words
The alkaline battery according to claim 34 wherein said alloy layer is formed by plating said outermost layer of said collector.
Claim 36
Dependent Claim
56 words
An alkaline battery comprising: mercuryless zinc powder as a negative electrode active material; and an outermost layer of a collector comprising an alloy layer containing zinc as an essential element, and containing one or more species selected from indium, lead and tin as a selective element, the alloy layer being not less than 3 µ m.
Claim 37
Dependent Claim
59 words
An applied product using art alkaline battery comprising: mercuryless zinc powder as a negative electrode active material; and an outermost layer of a collector comprising an alloy layer containing zinc as an essential element, and containing one or more species selected from indium and lead as a selective element, the alloy layer being not less than 3 µ m.
Claim 38
Dependent Claim
39 words
An applied product using an alkaline battery comprising: mercuryless zinc powder as a negative electrode active material; and an electrolyte solution, the electrolyte solution being added with any one species selected from indium sulfate, indium sulfamate and indium chloride.
Claim 39
Dependent Claim
37 words
An applied product using an alkaline battery comprising: mercuryless zinc powder as a negative electrode active material, the negative electrode active material being added with any one species selected from indium sulfate, indium sulfamate and indium chloride.
Claim 40
Dependent Claim
34 words
An applied product using an alkaline battery comprising: mercuryless zinc powder as a negative electrode active material; and an electrolyte solution, the electrolyte solution being added with an indium compound and a complexing agent.
Claim 41
Dependent Claim
32 words
An applied product using an alkaline battery comprising: mercuryless zinc powder as a negative electrode active material, the negative electrode active material being added with an indium compound and a complexing agent.
Claim 42
Dependent Claim
47 words
An applied product using an alkaline battery comprising: mercuryless zinc powder as a negative electrode active material; and an electrolyte solution, the electrolyte solution being added with two or more species of compounds selected from an indium compound, a tin compound containing tetravalent tin, and lead oxide.
Claim 43
Dependent Claim
45 words
An applied product using an alkaline battery comprising: mercuryless zinc powder as a negative electrode active material, the negative electrode active material being added with two or more species of compounds selected from an indium compound, a tin compound containing tetravalent tin, and lead oxide.
Claim 44
Dependent Claim
49 words
An applied product using an alkaline battery comprising: mercuryless zinc powder containing indium as a negative electrode active material; and an electrolyte solution, the electrolyte solution being added with one or more species of compounds selected from an indium compound, a tin compound containing tetravalent tin, and lead oxide.
Claim 45
Dependent Claim
47 words
An applied product using an alkaline battery comprising: mercuryless zinc powder containing indium as a negative electrode active material, the negative electrode active material being added with one or more species of compounds selected from an indium compound, a tin compound containing tetravalent tin, and lead oxide.
Claim 46
Dependent Claim
67 words
An applied product using an alkaline battery comprising: mercuryless zinc powder as a negative electrode active material, a concentration of iron included in the mercuryless zinc powder being not more than 4 ppm with respect to zinc; and an electrolyte solution, the electrolyte Solution being added with one or more species of compounds selected from an indium compound, a tin compound containing tetravalent tin, and lead oxide.
Claim 47
Dependent Claim
65 words
An applied product using an alkaline battery comprising: mercuryless zinc powder as a negative electrode active material, a concentration of iron included in the mercuryless zinc powder being not more than 4 ppm with respect to zinc, the negative electrode active material being added with one or more species of compounds selected from an indium compound, a tin compound containing tetravalent tin, and lead oxide.
Claim 48
Dependent Claim
104 words
An applied product using a silver oxide battery comprising: mercuryless zinc as a negative electrode active material, the mercuryless zinc containing at least one species of metal selected from the group consisting of 0.001-0.5 % by weight of gallium, 0.005-0.5 % by weight of indium, 0.0001-0.5 % by weight of lead, 0.005-0.5 % by weight of bismuth, 0.001-0.5 % by weight of aluminum, and 0.001-0.5 % by weight of calcium, and the balance comprising zinc and inevitable impurities; an amount of water in the battery being 0.31-0.57 mg per a weight of 1 mg of the mercuryless zinc; and an electrolyte being potassium hydroxide.
Claim 49
Dependent Claim
104 words
An applied product using a silver oxide battery comprising: mercuryless zinc as a negative electrode active material, the mercuryless zinc containing at least one species of metal selected from the group consisting of 0.001-0.5 % by weight of gallium, 0.005-0.5 % by weight of indium, 0.0001-0.5 % by weight of lead, 0.005-0.5 % by weight of bismuth, 0,001-0.5 % by weight of aluminum, and 0.001-0.5 % by weight of calcium, and the balance comprising zinc and inevitable impurities; an amount of water in the battery being 0.32-0.59 mg per a weight of 1 mg of the mercuryless zinc; and an electrolyte being sodium hydroxide.
Claim 50
Dependent Claim
76 words
An applied product using an alkaline battery comprising: mercuryless zinc powder containing a gelling agent as a negative electrode active material; an outermost layer of a collector comprising a layer of zinc or metal having a hydrogen overvoltage higher than that of zinc; and an electrolyte solution, the electrolyte solution being added with one or more species of materials selected from an indium compound, lead oxide, hydroxide of alkaline earth metal, a surfactant having polyethylene oxide.
Claim 51
Dependent Claim
75 words
An applied product using an alkaline battery comprising: mercuryless zinc powder containing a gelling agent as a negative electrode active material, the negative electrode active material being added with one or more species of materials selected from an indium compound, lead oxide, hydroxide of alkaline earth metal, a surfactant having polyethylene oxide; and an outermost layer of a collector comprising a layer of zinc or metal having a hydrogen overvoltage higher than that of zinc.
Claim 52
Dependent Claim
50 words
An applied product using an alkaline battery comprising: mercuryless zinc powder as a negative electrode active material; and an outermost layer of a collector comprising an alloy layer containing zinc as an essential element, and containing one or more species selected from indium, lead and tin as a selective element.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.