期刊
ADVANCED FUNCTIONAL MATERIALS
卷 30, 期 34, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.202002533
关键词
bifunctional electrocatalysts; core@shell structured networks; Molybdenum; overall water splitting; P-codoped Co layers
类别
资金
- Basic Science Research Program through the National Research Foundation - Ministry of Science and ICT of the Republic of Korea [2017R1A2B3004917]
- Regional Leading Research Center Program through the National Research Foundation - Ministry of Science and ICT of the Republic of Korea [2019R1A5A8080326]
The necessity for better water splitting requires speedy development of efficient catalysts with high activity, long-term stability, and cost effectiveness. In this work, a bifunctional catalyst originating from the interfacial assembly of a thin Mo,P-codoped Co layer (approximate to 50 nm) shelled Co nanowire (Co-Mo-P/CoNWs) network is fabricated via a facile approach. The catalyst exhibits low overpotentials of 0.08 and 0.27 V to reach a current response of 20 mA cm(-2)for the hydrogen evolution reaction and oxygen evolution reaction, respectively, together with long-term stability in 1.0mKOH medium. The outstanding performance is further demonstrated by a Co-Mo-P/CoNWs-based electrolyzer, which enables a cell voltage of only 1.495 V to reach 10 mA cm(-2), superior to one derived from commercial (Pt/C + RuO2/C) as well as to various reports recently published elsewhere. It is recognized that the formation of multiactive centers together with the increased active site number caused by Mo and P dual doping synergistically promote both hydrogen and oxygen evolution performance. Such a hybrid material opens a new approach for developing efficient and cost-effective catalysts for water splitting application.
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