Fuel cell electrolyte

Details Fuel cell electrolyte Fuel cell electrolyte

1983-12-16

1986-08-05

Walton, Donald L.

Chemistry: electrical current producing apparatus, product, and

Having magnetic field feature

429 46, H01M 808

Patent

active

046043306

ABSTRACT:
This invention relates to a novel intermediate temperature fuel cell electrolyte, fuel cells containing this electrolyte and a process for operating these fuel cells.
The fuel cell electrolyte composition comprises one or more phosphonic acids. Typical phosphonic acids are compounds of the formula ##STR1## wherein R is a moiety derived from hydroxyalkyl, alkyl, phenyl, alkylphenyl, vinyl, haloalkyl, halophenyl, halomethylphenyl, vinyl, amine, ammonia and ##STR2## and m represents an integer from 1 to 3 and n represents 0 (zero) or the integer 1. This electrolyte composition can further comprise phosphoric acid.
The fuel cell electrolyte composition can include a gelling agent and can be effectively used in fuel cells wherein the fuel is hydrogen, the oxidizer is oxygen and the operating temperature is between about 100.degree. C. and 250.degree. C.

REFERENCES:
patent: 3375138 (1968-03-01), Mather, Jr.
patent: 3719528 (1973-03-01), Grasselli et al.
patent: 4252868 (1981-02-01), Bohm et al.
Kunz et al, Optimization of Carbon-Supported Platinum Catalysts to Fuel Cell Electrodes, United Technologies Corp., Final Tech. Rept., Oct. 1979-Oct. 1980, apparent pub. date Dec. 1980.
Walsh et al, Electrolytes for Hydrocarbon Air Fuel Cells, ECO, Inc., Interim Technical Rept., apparent pub. date Apr. 1980.

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