Claims
- 1. A primary electrochemical cell comprising:
- (a) an oxidizable active anode material;
- (b) a cathode current collector comprising
- a layer of finely-divided catalyst for reducing the soluble cathode,
- an inert, electrically-conductive substrate, and
- a thin, fused, intermediate bonding layer comprising a finely-divided thermoplastic polymer and a minor amount of a finely-divided, inert, electrically-conductive material bonding the layer of finely-divided catalyst to the substrate,
- the thickness of the cathode current collector being less than 400 micrometers; and
- (c) an electrolytic solution, in contact with the anode and cathode current collector, comprising a reducible soluble cathode and an electrolyte solute dissolved therein.
- 2. A primary electrochemical cell according to claim 1 wherein the catalyst comprises gold.
- 3. A primary electrochemical cell according to claim 1 wherein the catalyst comprises platinum.
- 4. A primary electrochemical cell according to claim 1 wherein the catalyst comprises carbon black.
- 5. A primary electrochemical cell according to claim 1 wherein the bonding layer is porous.
- 6. A primary electrochemical cell according to claim 1 wherein the inert, electrically-conductive material in the bonding layer comprises carbon.
- 7. A primary electrochemical cell according to claim 1 wherein the bonding layer is from 5 to 50 micrometers thick.
- 8. A primary electrochemical cell according to claim 1 wherein the thermoplastic polymer comprises polytetrafluoroethylene.
- 9. A primary eletrochemical cell according to claim 1 wherein the layer of finely-divided catalyst comprises a minor amount of a thermoplastic polymer.
- 10. A primary electrochemical cell according to claim 9 wherein the thermoplastic polymer comprises polytetrafluoroethylene.
- 11. A primary electrochemical cell according to claim 1 wherein the inert, electrically-conductive substrate is a thin metal foil.
- 12. A primary electrochemical cell according to claim 11 wherein the oxidizable anode material comprises lithium metal and the reducible soluble cathode comprises thionyl chloride.
- 13. A primary electrochemical cell according to claim 1 wherein the inert, electrically-conductive substrate comprises a porous metal, which contains from 15 to 90% void space.
- 14. A primary electrochemical cell according to claim 1 wherein the cathode current collector has a thickness of less than 200 micrometers.
- 15. A primary electrochemical cell according to claim 14 wherein at least 95% of the finely-divided catalyst pass through a 100 mesh Tyler Sieve.
- 16. A primary electrochemical cell according to claim 15 wherein the bonding layer is from 5 to 50 micrometer thick.
- 17. A primary electrochemical cell according to claim 16 wherein the layer of finely-divided catalyst comprises a minor amount of a thermoplastic polymer.
- 18. A primary electrochemical cell comprising:
- (a) an oxidizable active anode material;
- (b) a cathode current collector comprising
- a layer of finely-divided catalyst for reducing the soluble cathode, the catalyst being selected from the group consisting of gold, platinum, nickel oxide and copper sulfide,
- an inert, electrically-conductive porous substrate, and
- a thin, fused, intermediate bonding layer comprising a finely-divided thermoplastic polymer and a minor amount of a finely-divided, inert, electrically-conductive material bonding the layer of finely-divided catalyst to the substrate; and
- (c) an electrolytic solution, in contact with the anode and cathode current collector, comprising a reducible soluble cathode and an electrolyte solute dissolved therein.
Parent Case Info
This is a division of application Ser. No. 971,571, now U.S. Pat. No. 4,219,443, filed Dec. 20, 1978.
US Referenced Citations (5)
Divisions (1)
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Number |
Date |
Country |
Parent |
971571 |
Dec 1978 |
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