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The influence of platinum crystallite size on the electrochemical reduction of oxygen in phosphoric acid

โœ Scribed by L.J. Bregoli

Publisher
Elsevier Science
Year
1978
Tongue
English
Weight
330 KB
Volume
23
Category
Article
ISSN
0013-4686

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โœฆ Synopsis

An experimental program was conducted to investigate the catalytic activity of platinum black and platinum supported on carbon for the electrochemical reduction of oxygen in 99 wt% phosphoric acid at 177'C as a function of platinum surface area. The activity of platinum was found to approximately double as the surface area of platinum was decreased from 80 to 10m2/g. The 'Mel slope was found to be approximately equal to 2.3 R/F on the higher surface area catalysts and greater than 2.3 RT/F on the lower surfa= area catalysts.

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