Platinum alloy electrocatalyst and acid-electrolyte fuel cell electrode using the same

A platinum alloy electrocatalyst composed of a platinum-iron-cobalt alloy comprising 40 to 80 atomic percent of platinum, 10 to 40 atomic percent of iron and 10 to 40 atomic percent of cobalt supported on a suitable carrier has outstandingly high stability and catalytic activity. Electrodes using su...

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Bibliographische Detailangaben
Hauptverfasser:	KATO, KATSUAKI, ITO, TAKASHI, MATSUZAWA, SHIGEMITSU
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS THEREFOR BASIC ELECTRIC ELEMENTS CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY ELECTRICITY ELECTROLYTIC OR ELECTROPHORETIC PROCESSES ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTIONOF COMPOUNDS OR NON-METALS METALLURGY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	A platinum alloy electrocatalyst composed of a platinum-iron-cobalt alloy comprising 40 to 80 atomic percent of platinum, 10 to 40 atomic percent of iron and 10 to 40 atomic percent of cobalt supported on a suitable carrier has outstandingly high stability and catalytic activity. Electrodes using such an electrocatalyst (particularly when used as cathodes in acid-electrolyte fuel cells) remain stable for longer periods and have more than 30% higher output than electrodes using conventional catalysts.