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- Title
Molybdenum and Phosphorous Dual Doping in Cobalt Monolayer Interfacial Assembled Cobalt Nanowires for Efficient Overall Water Splitting.
- Authors
Hoa, Van Hien; Tran, Duy Thanh; Nguyen, Dinh Chuong; Kim, Do Hwan; Kim, Nam Hoon; Lee, Joong Hee
- Abstract
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 (≈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 1.0 m KOH 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.
- Subjects
OXYGEN evolution reactions; MONOMOLECULAR films; COBALT; NANOWIRES; MOLYBDENUM; SEMICONDUCTOR nanowires; HYDROGEN evolution reactions; CATALYSTS
- Publication
Advanced Functional Materials, 2020, Vol 30, Issue 34, p1
- ISSN
1616-301X
- Publication type
Article
- DOI
10.1002/adfm.202002533