EP0602984A2
Expired / Lapsed
EP
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Electrochemical cell
Assignee: Brookhaven Science Associates LLC
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Filing: 1993-12-16
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Granted: —
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Expires: 2013-12-16
Abstract
Abstract The present invention relates to an electric current producing cell which contains an anode, a cathode having as a cathode-active material one or more carbon-sulfur compounds of the formula (CS x ) n , in which x takes values from 1.2 to 2.3 and n is greater or equal to 2, and where the redox process does not involve polymerization and de-polymerization by forming and breaking S-S bonds in the polymer backbone. The cell also contains an electrolyte which is chemically inert with respect to the anode and the cathode.
Inventors
- 👤 Yoshi Okamoto
- 👤 Terje A. Skotheim
- 👤 Hung Sui Lee
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 19:20
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/05; H01M10/052; H01M10/056; H01M10/0564; H01M10/0565; H01M4/00; H01M4/02; H01M4/36; H01M4/60; H01M6/00; H01M6/14; H01M6/16; H01M6/162; H01M6/164; H01M6/168; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02T; Y02T10/00; Y02T10/60; Y02T10/70
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
159 words
An electric current-producing cell, comprising: (a) a solid anode wherein said anode comprises a material selected from one or more alkali metals, a mixture of one of more alkali metals, one or more alkaline earth meals, lithium-aluminum alloys, sodium alloys and lithium and sodium intercalated carbon; (b) a composite cathode containing as cathode-active material one or more conjugated carbon-sulfur compounds having the formula: (CS x ) n wherein x is from 1.2 to 2.3 and n is greater or equal to 2, preferably greater than 20, and with an electrochemical activity of oxidation and reduction which does not involve forming and breaking sulfur-sulfur bonds in the polymer backbone; a polymer electrolyte for transport of ions; and conducting carbon for the transport of electrons; and (c) a polymer electrolyte containing a lithium or sodium salt, which is chemically inert with respect to said anode and said cathode, and which permits the transportation of ions between said anode and said cathode.
Claim 2
Dependent Claim
26 words
A cell according to claim 1 wherein said electrolyte is selected from solid polymer electrolytes, single-ion conducting polymer electrolytes, gel polymer electrolytes and liquid organic electrolytes.
Claim 3
Dependent Claim
21 words
A cell according to claim 2 wherein the polymer electrolyte is a lithium or sodium ion-conducting polymer having a polysiloxane backbone.
Claim 4
Dependent Claim
30 words
A cell according to claim 2 wherein the gel polymer electrolyte contains plasticizing agents selected from propylene carbonate, ethylene carbonate, N-methyl acetamide, sulfonate, sulfolane, poly(ethylene glycol), 1,2-dimethoxy-ethane, 1,3-dioxolane and glymes.
Claim 5
Dependent Claim
31 words
A cell according to claim 1 wherein said electrolyte is an alkali metal salt selected from MC10₄, MSO₃CF₃, MBF₄ MAsF₆, MPF₆, MN(CF₃SO₂)₂, MSO₂(CF₂)₄SO₂N and MC(CF₃SO₂)₃, where M is Li or Na.
Claim 6
Independent Claim
37 words
A method of preparing a composite cathode which comprises coating a cathode substrate with a mixture comprising an effective amount of poly(carbon disulfide) with an effective amount of polymer electrolyte and an effective amount of conducting carbon.
Claim 7
Independent Claim
96 words
A method of forming a solid state rechargeable battery which comprises: (a) providing a solid anode formed from material selected from one or more alkali metals, a mixture of one or more alkali metals, one or more alkaline earth metals, lithium-aluminum alloys, sodium alloys, and lithium and sodium intercalated carbon; (b) providing a composite cathode formed by coating a cathode substrate with a mixture comprising an effective amount of poly(carbon disulfide) with an effective amount of polymer electrolyte and an effective amount of conducting carbon; (c) enclosing a polymer electrolyte between said anode and said cathode.
Claim 8
Dependent Claim
31 words
A novel cathode which comprises a cathode material having the formula: (CS x ) n wherein x is from 1.7 to 2.3 and n is greater than or equal to 2.
Claim 9
Independent Claim
37 words
A method of preparing a composite cathode which comprises coating a cathode substrate with a mixture comprising an effective amount of poly(carbon disulfide) with an effective amount of polymer electrolyte and an effective amount of acetyline black.
Claim 10
Independent Claim
81 words
A method of forming a solid state rechargeable battery which comprises: (a) providing a solid anode formed from material selected from one or more alkali metals, one or more alkaline earth metals, and intercalated carbon; (b) providing a composite cathode formed by coating a cathode substrate with a mixture comprising an effective amount of poly(carbon disulfide) with an effective amount of polymer electrolyte and an effective amount of acetyline black; (c) enclosing a polymer electrolyte between said anode and said cathode.
References Cited (Backward Citations)
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