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Outstanding hydrogen evolution reaction catalyzed by porous nickel diselenide electrocatalysts

Abstract

To relieve our strong reliance on fossil fuels and to reduce greenhouse effects, there is an ever-growing interest in using electrocatalytic water splitting to produce green, renewable, and environment-benign hydrogen fuel via the hydrogen evolution reaction. For commercially feasible water electrolysis, it is imperative to develop electrocatalysts that perform as efficient as Pt but using only earth-abundant commercial materials. However, the highest performance current catalysts consist of nanostructures made by complex methods. Here we report a porous nickel diselenide (NiSe2) catalyst that is superior for water electrolysis, exhibiting much better catalytic performance than most first-row transition metal dichalcogenides-based catalysts, well-studied MoS2, and WS2-based catalysts. Indeed NiSe2 performs comparably to the state-of-the-art Pt catalysts. We fabricate NiSe2 directly from commercial nickel foam by acetic acid-assisted surface roughness engineering. To understand the origin of the high performance, we use first-principles calculations to identify the active sites. This work demonstrates the commercial possibility of hydrogen production via water electrolysis using porous bulk NiSe2 catalysts.

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Publication details

The article was received on 22 Mar 2017, accepted on 17 May 2017 and first published on 17 May 2017


Article type: Paper
DOI: 10.1039/C7EE00802C
Citation: Energy Environ. Sci., 2017, Accepted Manuscript
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    Outstanding hydrogen evolution reaction catalyzed by porous nickel diselenide electrocatalysts

    H. Zhou, F. Yu, Y. Liu, J. Sun, Z. Zhu, R. He, J. Bao, W. A. Goddard, S. Chen and Z. Ren, Energy Environ. Sci., 2017, Accepted Manuscript , DOI: 10.1039/C7EE00802C

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