Volume 50, Issue 46 pp. 10969-10972

Communication

Co_1−xS–Graphene Hybrid: A High-Performance Metal Chalcogenide Electrocatalyst for Oxygen Reduction^†

Hailiang Wang,

Hailiang Wang

Department of Chemistry, Stanford University, Keck Building, 380 Roth Way, Stanford, CA 94305 (USA)

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Yongye Liang,

Yongye Liang

Department of Chemistry, Stanford University, Keck Building, 380 Roth Way, Stanford, CA 94305 (USA)

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Yanguang Li,

Yanguang Li

Department of Chemistry, Stanford University, Keck Building, 380 Roth Way, Stanford, CA 94305 (USA)

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Prof. Hongjie Dai,

Corresponding Author

Prof. Hongjie Dai

[email protected]

Department of Chemistry, Stanford University, Keck Building, 380 Roth Way, Stanford, CA 94305 (USA)

Department of Chemistry, Stanford University, Keck Building, 380 Roth Way, Stanford, CA 94305 (USA)Search for more papers by this author

Hailiang Wang,

Hailiang Wang

Department of Chemistry, Stanford University, Keck Building, 380 Roth Way, Stanford, CA 94305 (USA)

Search for more papers by this author

Yongye Liang,

Yongye Liang

Department of Chemistry, Stanford University, Keck Building, 380 Roth Way, Stanford, CA 94305 (USA)

Search for more papers by this author

Yanguang Li,

Yanguang Li

Department of Chemistry, Stanford University, Keck Building, 380 Roth Way, Stanford, CA 94305 (USA)

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Prof. Hongjie Dai,

Corresponding Author

Prof. Hongjie Dai

[email protected]

Department of Chemistry, Stanford University, Keck Building, 380 Roth Way, Stanford, CA 94305 (USA)

Department of Chemistry, Stanford University, Keck Building, 380 Roth Way, Stanford, CA 94305 (USA)Search for more papers by this author

First published: 23 September 2011

https://doi.org/10.1002/anie.201104004

Citations: 424

^†

This work is supported partially by ONR and a Stanford Graduate Fellowship.

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Graphical Abstract

A hybrid electrocatalyst for the oxygen reduction reaction (ORR), consisting of Co_1−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 Co_1−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).

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Volume50, Issue46

November 11, 2011

Pages 10969-10972

Co_1−xS–Graphene Hybrid: A High-Performance Metal Chalcogenide Electrocatalyst for Oxygen Reduction^†

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Co1−xS–Graphene Hybrid: A High-Performance Metal Chalcogenide Electrocatalyst for Oxygen Reduction†

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Co_1−xS–Graphene Hybrid: A High-Performance Metal Chalcogenide Electrocatalyst for Oxygen Reduction^†