Highly Robust Non-Noble Alkaline Hydrogen-Evolving Electrocatalyst from Se-Doped Molybdenum Disulfide Particles on Interwoven CoSe2 Nanowire Arrays

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Liling LiaoHaiqing Zhou

Abstract

Developing efficient non-noble and earth-abundant hydrogen-evolving electrocatalysts is highly desirable for improving the energy efficiency of water splitting in base. Molybdenum disulfide (MoS2 ) is a promising candidate, but its catalytic activity is kinetically retarded in alkaline media due to the unfavorable water adsorption and dissociation feature. A heterogeneous electrocatalyst is reported that is constructed by selenium-doped MoS2 (Se-MoS2 ) particles on 3D interwoven cobalt diselenide (CoSe2 ) nanowire arrays that drives the hydrogen evolution reaction (HER) with fast reaction kinetics in base. The resultant Se-MoS2 /CoSe2 hybrid exhibits an outstanding catalytic HER performance with extremely low overpotentials of 30 and 93 mV at 10 and 100 mA cm-2 in base, respectively, which outperforms most of the inexpensive alkaline HER catalysts, and is among the best alkaline catalytic activity reported so far. Moreover, this hybrid catalyst shows exceptional catalytic performance with very low overpotentials of 84 and 95 mV at 10 mA cm-2 in acidic and neutral electrolytes, respectively, implying robust pH universality of this hybrid catalyst. This work may provide new inspirations for the development of high-performance MoS...Continue Reading

References

Apr 14, 2005·Journal of the American Chemical Society·Berit HinnemannJens K Nørskov
Oct 18, 2006·Proceedings of the National Academy of Sciences of the United States of America·Nathan S Lewis, Daniel G Nocera
Nov 15, 2006·Angewandte Chemie·Nicola Armaroli, Vincenzo Balzani
Apr 23, 2011·Journal of the American Chemical Society·Yanguang LiHongjie Dai
Feb 26, 2014·Journal of the American Chemical Society·Honglai LiXiangfeng Duan
May 29, 2014·Physical Chemistry Chemical Physics : PCCP·Charlie TsaiJens K Nørskov
Apr 18, 2015·Chemical Society Reviews·Xiaoxin Zou, Yu Zhang
Sep 15, 2015·Nature Materials·Miguel Cabán-AcevedoSong Jin
May 17, 2017·Proceedings of the National Academy of Sciences of the United States of America·Haiqing ZhouZhifeng Ren
Apr 20, 2018·Nature·Jiadong ZhouZheng Liu

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