This work is supported partially by ONR and a Stanford Graduate Fellowship.
Co1−xS–Graphene Hybrid: A High-Performance Metal Chalcogenide Electrocatalyst for Oxygen Reduction†
Article first published online: 23 SEP 2011
Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Angewandte Chemie International Edition
Volume 50, Issue 46, pages 10969–10972, November 11, 2011
How to Cite
Wang, H., Liang, Y., Li, Y. and Dai, H. (2011), Co1−xS–Graphene Hybrid: A High-Performance Metal Chalcogenide Electrocatalyst for Oxygen Reduction. Angew. Chem. Int. Ed., 50: 10969–10972. doi: 10.1002/anie.201104004
- Issue published online: 9 NOV 2011
- Article first published online: 23 SEP 2011
- Manuscript Revised: 24 AUG 2011
- Manuscript Received: 11 JUN 2011
- oxygen reduction
A hybrid electrocatalyst for the oxygen reduction reaction (ORR), consisting of Co1−xS nanoparticles directly nucleated and grown on sheets of reduced graphene oxide (RGO; see SEM image), was prepared by a mild solution-phase reaction followed by an annealing step. The Co1−xS–RGO hybrid has the highest catalytic performance of all cobalt chalcogenide based ORR catalysts, as revealed inter alia by measurements with a rotating-disk electrode (see picture; RHE = reversible hydrogen electrode).