Highly active and durable methanol oxidation electrocatalyst based on the synergy of platinum–nickel hydroxide–graphene

Wenjing Huang, Hongtao Wang, Jigang Zhou, Jian Wang, Paul N. Duchesne, David Muir, Peng Zhang, Na Han, Feipeng Zhao, Min Zeng, Jun Zhong, Chuanhong Jin, Yanguang Li (), Shuit-Tong Lee and Hongjie Dai
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Wenjing Huang: Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University
Hongtao Wang: State Key Laboratory of Silicon Materials and School of Materials Science and Engineering, Zhejiang University
Jigang Zhou: Canadian Light Source Inc.
Jian Wang: Canadian Light Source Inc.
Paul N. Duchesne: Dalhousie University
David Muir: Canadian Light Source Inc.
Peng Zhang: Dalhousie University
Na Han: Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University
Feipeng Zhao: Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University
Min Zeng: Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University
Jun Zhong: Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University
Chuanhong Jin: State Key Laboratory of Silicon Materials and School of Materials Science and Engineering, Zhejiang University
Yanguang Li: Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University
Shuit-Tong Lee: Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University
Hongjie Dai: Stanford University

Nature Communications, 2015, vol. 6, issue 1, 1-8

Abstract: Abstract Active and durable electrocatalysts for methanol oxidation reaction are of critical importance to the commercial viability of direct methanol fuel cell technology. Unfortunately, current methanol oxidation electrocatalysts fall far short of expectations and suffer from rapid activity degradation. Here we report platinum–nickel hydroxide–graphene ternary hybrids as a possible solution to this long-standing issue. The incorporation of highly defective nickel hydroxide nanostructures is believed to play the decisive role in promoting the dissociative adsorption of water molecules and subsequent oxidative removal of carbonaceous poison on neighbouring platinum sites. As a result, the ternary hybrids exhibit exceptional activity and durability towards efficient methanol oxidation reaction. Under periodic reactivations, the hybrids can endure at least 500,000 s with negligible activity loss, which is, to the best of our knowledge, two to three orders of magnitude longer than all available electrocatalysts.

Date: 2015
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DOI: 10.1038/ncomms10035

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