High‐Index Faceted Platinum Nanocrystals Supported on Carbon Black as Highly Efficient Catalysts for Ethanol Electrooxidation

Abstract

Platinum nanocrystals on carbon black were synthesized by an electrochemical square-wave potential method (HIF-Pt/C, see picture). The nanocrystals have high-index facets and a high density of atomic steps. Thanks to this high density, the catalysts exhibit at least twice the activity and selectivity of commercial Pt/C catalysts for ethanol electrooxidation into CO2.