US5759711A
Expired / Lapsed
US
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Liquid-circulating battery
Assignee: Sumitomo Electric Industries Ltd
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Filing: 1997-02-14
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Granted: 1998-06-02
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Expires: 2017-02-14
Abstract
Abstract The present invention provides a liquid-circulating battery including a positive electrode, a negative electrode, a permeable membrane interposed between the positive and negative electrodes to hold the same in separated relation to each other and to partition the same into a positive chamber and a negative chamber, two porous liquid-permeable carbon electrodes disposed respectively in the positive and negative electrolytic solutions being circulated respectively into the positive and negative chambers such that an oxidation-reduction reaction occurs and causes charging and discharging, wherein the permeable membrane is an ion-exchange me membrane including as an ion exchanger layer a polymeric pellicle which results from crosslinking of a halogenated alkylated product of an aromatic polysulfone type polymer with use of a polyamine and which has an ion exchange capacity of 0.3 to 8.0 milliequivalent/gram of dry resin and a thickness 0.1 to 120 mu m, said polysulfone type polymer having as a recurring unit a group represented at least by the following formula (I); and <IMAGE> (I) and wherein each of said positive and negative electrolytic solutions is an electrolytic solution having a vanadium ion concentration of 0.5 to 8 mols/liter.
Inventors
- 👤 Mitsutaka Miyabayashi
- 👤 Kanji Sato
- 👤 Masato Nakajima
- 👤 Kouichi Furusato
- 👤 Sumie Sekiguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:18
CPC Classifications
H; H01; H01M; H01M8/00; H01M8/18; H01M8/184; H01M8/188; H01M8/02; H01M8/0289; H01M50/00; H01M50/40; H01M50/409; H01M50/411; H01M50/414; H01M50/417; H01M50/426; H01M50/489; H01M50/497; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
198 words
A liquid-circulating battery comprising: a positive electrode chamber; a negative electrode chamber; a permeable membrane interposed between said positive and negative electrode chambers to separate said positive chamber and said negative chamber; a first and a second porous liquid-permeable carbon electrodes disposed respectively in said positive and negative chambers; and a positive and a negative electrolytic solutions, said positive and negative electrolytic solutions being circulated respectively into said positive and negative chambers such that an oxidation-reduction reaction occurs and causes charging and discharging, wherein said permeable membrane is defined by the following requirement (a), and each of said positive and negative electrolytic solutions is defined by the following requirement (b): (a) an ion-exchange membrane including as an ion-exchanger layer a polymeric pellicle which results from crosslinking of a halogenated alkylated product of an aromatic polysulfone polymer with use of a polyamine and which has an ion exchange capacity of 0.3 to 8.0 milliequivalent/gram of dry resin and a thickness of 0.1 to 120 μm, said polysulfone polymer having as a recurring unit at least a group represented by the following formula (I); and ##STR8## (b) an electrolytic solution having a vanadium ion concentration of 0.5 to 8 mols/liter.
Claim 2
Dependent Claim
198 words
A liquid-circulating battery comprising: a positive electrode chamber; a negative electrode chamber; a permeable membrane interposed between said positive and negative electrode chambers to separate said positive chamber and said negative chamber; a first and a second porous liquid-permeable carbon electrodes disposed respectively in said positive and negative chambers; and a positive and a negative electrolytic solutions, said positive and negative electrolytic solutions being circulated respectively into said positive and negative chambers such that an oxidation-reduction reaction occurs and causes charging and discharging, wherein said permeable membrane is defined by the following requirement (a), and each of said positive and negative electrolytic solutions is defined by the following requirement (b): (a) an ion-exchange membrane including as an ion-exchanger layer a polymeric pellicle which results from crosslinking of a halogenated alkylated product of an aromatic polysulfone polymer with use of a polyamine and which has an ion exchange capacity of 0.3 to 8.0 milliequivalent/gram of dry resin and a thickness of 0.1 to 120 μm, said polysulfone polymer having as a recurring unit at least a group represented by the following formula (I); and ##STR8## (b) an electrolytic solution having a vanadium ion concentration of 0.5 to 8 mols/liter.
Claim 3
Dependent Claim
28 words
The battery according to claim 1, wherein each of said positive and negative electrolytic solutions has a sulfate group contained in a concentration of 0.5 to 9.0 mols/liter.
Claim 4
Dependent Claim
35 words
The battery according to claim 1 or 2, wherein said ion exchanger layer is disposed on a substrate layer formed substantially free from ion exchange groups and having a thickness of 1.0 to 250 μm.
Claim 5
Dependent Claim
33 words
The battery according to claim 3, wherein said ion exchanger layer is disposed on a porous substrate layer formed of a polyolefin or a polyfluoroolefin and having a porosity of 20 to 90%.
Claim 6
Dependent Claim
21 words
The battery according to claim 3, wherein said ion exchanger layer is disposed on a nonwoven fabric formed of a polyolefin.
Claim 7
Dependent Claim
20 words
The battery according to claim 3, wherein said ion exchanger layer is disposed on a translucent film having ionic conductivity.
Claim 8
Dependent Claim
26 words
The battery according to claim I, wherein each of said first and second porous liquid-permeable carbon electrodes has a bulk density of 0.04 to 0.8 g/cc.
Claim 9
Dependent Claim
76 words
The battery according to claim 1, which further includes at least one cell structure having two current collectors positioned respectively on a side of said first and second porous liquid-permeable carbon electrode near to said permeable membrane and on the opposite side of the former electrode remote from the latter membrane, said porous carbon electrode being interposed between and by said permeable membrane and said current collectors and has a thickness of 0.3 to 10 mm.
Claim 10
Dependent Claim
34 words
A method of making the liquid-circulating battery of claim 1 comprising: separating said positive electrode chamber from said negative electrode chamber by placing said permeable membrane between said positive and said negative electrode chambers.
Claim 11
Dependent Claim
36 words
The method of making the liquid-circulating battery of claim 9, further comprising: placing said first porous liquid-permeable carbon electrode in said positive electrode chamber and said second porous liquid-permeable carbon electrode in said negative electrode chamber.
Claim 12
Dependent Claim
32 words
The method of making the liquid-circulating battery of claim 10, further comprising: filling said positive electrode chamber with said positive electrolytic solution and said negative electrode chamber with said negative electrolytic solution.
Claim 13
Dependent Claim
31 words
A liquid-circulating battery of claim 1 prepared by a process comprising: filling said positive electrode chamber with said positive electrolytic solution and said negative electrode chamber with said negative electrolytic solution.
Claim 14
Dependent Claim
34 words
The liquid-circulating battery of claim 12, wherein said process further comprises: separating said positive electrode chamber from said negative electrode chamber by placing said permeable membrane between said positive and the negative electrode chambers.
Claim 15
Dependent Claim
35 words
The liquid-circulating battery of claim 13, wherein said process further comprises: placing said first porous liquid-permeable carbon electrode in said positive electrode chamber and said second porous liquid-permeable carbon electrode in said negative electrode chamber.
Claim 16
Dependent Claim
128 words
A battery comprising: a positive electrode chamber, a negative electrode chamber, a permeable membrane interposed between said positive and negative electrode chambers to separate said positive chamber and said negative chamber, a first and a second porous liquid-permeable carbon electrodes disposed respectively in said positive and negative chambers; wherein said permeable membrane is an ion-exchange membrane comprising a polymeric pellicle as an ion-exchanger layer which results from crosslinking of a halogenated alkylated product of an aromatic polysulfone polymer with use of a polyamine, wherein the ion-exchange membrane has an ion exchange capacity of 0.3 to 0.8 milliequivalent/gram of dry resin and a thickness of 0.1 to 120 μm and, said polysulfone polymer has as a recurring unit at least a group represented by the following formula (I): ##STR9##
Claim 17
Dependent Claim
128 words
A battery comprising: a positive electrode chamber, a negative electrode chamber, a permeable membrane interposed between said positive and negative electrode chambers to separate said positive chamber and said negative chamber, a first and a second porous liquid-permeable carbon electrodes disposed respectively in said positive and negative chambers; wherein said permeable membrane is an ion-exchange membrane comprising a polymeric pellicle as an ion-exchanger layer which results from crosslinking of a halogenated alkylated product of an aromatic polysulfone polymer with use of a polyamine, wherein the ion-exchange membrane has an ion exchange capacity of 0.3 to 0.8 milliequivalent/gram of dry resin and a thickness of 0.1 to 120 μm and, said polysulfone polymer has as a recurring unit at least a group represented by the following formula (I): ##STR9##
Claim 18
Dependent Claim
33 words
The battery according to claim 15, wherein said ion exchanger layer is disposed on a substrate layer formed substantially free from ion exchange groups and having a thickness of 1.0 to 250 μm.
Claim 19
Dependent Claim
33 words
The battery according to claim 15, wherein said ion exchanger layer is disposed on a porous substrate layer formed of a polyolefin or a polyfluoroolefin and having a porosity of 20 to 90%.
Claim 20
Dependent Claim
21 words
The battery according to claim 15, wherein said ion exchanger layer is disposed on a nonwoven fabric formed of a polyolefin.
Claim 21
Dependent Claim
20 words
The battery according to claim 15, wherein said ion exchanger layer is disposed on a translucent film having ionic conductivity.
Claim 22
Dependent Claim
26 words
The battery according to claim 15, wherein each of said first and second porous liquid-permeable carbon electrodes has a bulk density of 0.4 to 0.8 g/cc.
References Cited (Backward Citations)
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