Platinum-free Catalyst for Efficient Reduction of Oxygen at Air Cathode
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Electrocatalytic activity and selectivity for oxygen reduction to water on platinum-free catalysts prepared from transition metal hexacyanometallate precursors have been examined using a rotating ring-disk electrode technique. The results obtained indicated that a catalyst containing copper and iron promotes so-called four-electron reduction reaction of oxygen at a potential close to or higher than that of a Pt electrode, so that it could be a possible candidate substituting for Pt-based catalysts of air cathodes.
- Chemistry Letters
Chemistry Letters 35(10), 1166-1167, 2006-10-05
The Chemical Society of Japan