Chemistry: electrical current producing apparatus – product – and – Having earth feature
Patent
1988-06-21
1990-05-22
Kalafut, Stephen J.
Chemistry: electrical current producing apparatus, product, and
Having earth feature
429 45, 423449, 423460, 502101, H01M 486, C09C 156
Patent
active
049277189
ABSTRACT:
A novel carbonaceous electrode support material is disclosed characterized by a corrosion rate of 0.03 wt. %/hour or less when measured a5 550 millivolts vs. a Hg/HgO electrode in a 30 wt. % KOH electrolyte a5 30.degree. C. The electrode support material comprises a preselected carbon black material which has been heat-treated by heating the material to a temperature of from about 2500.degree. to about 3000.degree. C. over a period of from about 1 to about 5 hours in an inert atmosphere and then maintaining the preselected carbon black material at this temperature for a period of at least about 1 hour, and preferably about 2 hours, in the inert atmosphere.
A carbonaceous electrode suitable for use as an air electrode in a metal-air cell may be made from the electrode support material by shaping and forming it into a catalyst support and then impregnating it with a catalytically active material capable of catalyzing the reaction with oxygen at the air electrode of metal-air cell.
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Kinoshita, Carbon, Electrochemical and Physiochemical Properties; New York et al, John Wiley and Sons, Inc. 1988, pp. 5.noteq.6.
Carnahan L. E.
Gaither Roger S.
Kalafut Stephen J.
Moser William R.
The United States of America as represented by the United States
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