OXYGEN ELECTROREDUCTION IN PERFLUORINATED SULPHONYL IMIDES.

被引：0

作者：

Razaq, M.

Razaq, A.

Yeager, E.

Desmarteau, Darryl D.

Singh, S.

机构：

[1] Department of Chemistry, Case Center for Electrochemical Sciences, Case Western Reserve University, Cleveland, 44106, OH, United States

[2] Department of Chemistry, Clemson University, 114 Brackett Hall, Clemson, 29634-1905, S. Carolina, United States

来源：

| 1600年 / 17期

关键词：

ACIDS - CATALYSTS - Platinum - ELECTRODES - ELECTROLYTES - Materials - FUEL CELLS;

D O I：

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摘要：

The electroreduction of oxygen in perfluorinated sulfonyl imides has been studied with the emphasis on the identification of alternate acid electrolytes which could replace the presently used phosphoric acid as an electrolyte in H//2-O//2 fuel cells. The activity for oxygen reduction on smooth platinum and gas-fed, high surface area platinum-catalyzed electrodes (10% platinum loading on XC-72 carbon support) has been examined. The polarization of the air cathode in the micro-fuel cell in bis(trifluoromethanesulfonyl)imide is 40 mv more positive compared to phosphoric acid at 100 ma cm** minus **2, presumably due to the increased solubility of oxygen and lower tendency of bis(trifluoromethanesulfonyl)imide to adsorb on the platinum catalyst.

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