# US 4,399,204 A · Solid cathode comprising a lead fluoride/tin fluoride compound

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- Number: US 4,399,204 A
- Document ID: US4399204A
- Status: Granted
- Kind: A
- Application number: 06/278,966
- Filed: 1981-06-30
- Granted: 1983-08-16
- Earliest claimed: 1981-06-30
- Assignees: Union Carbide Corporation
- Inventors: Milton B. Clark
- Web page: https://patentgrep.com/patent/US4399204A

## CPC

- H01M 6/16: with organic electrolyte (H01M6/18 takes precedence)
- H01M 4/582: {Halogenides}
- H01M 4/625: {Carbon or graphite}
- Y02E 60/10: Energy storage using batteries
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

A nonaqueous cell employing a solid cathode compound of lead fluoride and tin fluoride such as PbSnF.sub.4.

## Claims

### Claim 1

A nonaqueous cell comprising an active metal anode, an organic electrolyte solution, and a solid cathode material comprising a compound of lead fluoride and tin fluoride having a mole ratio between 4:1 to 1:4.

### Claim 2

A nonaqueous cell comprising an active metal anode, an organic electrolyte solution, and a solid cathode material selected from the group consisting of PbSnF.sub.4, Pb.sub.2 SnF.sub.6, Pb.sub.4 SnF.sub.10, PbSn.sub.4 F.sub.10 and PbSn.sub.2 F.sub.6.

### Claim 3

A nonaqueous cell comprising an active metal anode, an organic electrolyte solution and a solid cathode material of PbSnF.sub.4.

### Claim 4 (depends on 1, 2, 3)

The nonaqueous cell of claim 1, 2 or 3 wherein at least one material selected from the group consisting of graphite, carbon, polytetrafluoroethylene, polyethylene, polysulfone, polypropylene and polyamide is added to the solid cathode material.

### Claim 5 (depends on 4)

The nonaqueous cell of claim 4 wherein the anode is lithium and the solvent of the electrolyte solution is 3-methyl-2-oxazolidone along with a low viscosity solvent selected from the group consisting of tetrahydrofuran, methyl-substituted tetrahydrofuran, dioxolane, dimethoxyethane, dimethyl isoxazole, diethyl carbonate, ethylene glycol sulfite, dioxane and dimethyl sulfite.

### Claim 6 (depends on 4)

The nonaqueous cell of claim 4 wherein the anode is lithium and the electrolyte solution comprises LiCF.sub.3 SO.sub.3 dissolved in 3-methyl-2-oxazolidone, dimethoxyethane and dioxolane.