Ni sub(0.85)Se as an efficient non-noble bifunctional electrocatalyst for full water splitting

In this letter, we reported hexagonal phase Ni sub(0.85)Se as a new bifunctional electrocatalyst for full water splitting, which was prepared through electrodeposition. The as-synthesized Ni sub(0.85)Se films supported on graphite substrate exhibited excellent activities for both hydrogen evolution...

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Published inInternational journal of hydrogen energy Vol. 41; no. 25; pp. 10688 - 10694
Main Authors Wu, Xiaolin, He, Denghong, Zhang, Hongxiu, Li, Hao, Li, Zhongjian, Yang, Bin, Lin, Zhan, Lei, Lecheng, Zhang, Xingwang
Format Journal Article
LanguageEnglish
Published 06.07.2016
Subjects
Electrocatalysts
Electrodeposition
Electrodes
Evolution
Graphite
Hydrogen evolution
Hydrogen-based energy
Water splitting
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Summary:In this letter, we reported hexagonal phase Ni sub(0.85)Se as a new bifunctional electrocatalyst for full water splitting, which was prepared through electrodeposition. The as-synthesized Ni sub(0.85)Se films supported on graphite substrate exhibited excellent activities for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). It needs overpotentials of 200 and 302 mV to drive 10 mA cm super(-2) for HER and OER in 1.0 M NaOH, respectively, and shows competitive activity among non-noble electrocatalysts with strong durability. The marvellous performance of cost-effective Ni sub(0.85)Se in HER and OER enables it to serve as competitive bifunctional electrode in alkaline water electrolyzer.
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ISSN:0360-3199
DOI:10.1016/j.ijhydene.2016.05.010