期刊
CHEMICAL ENGINEERING JOURNAL
卷 402, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2020.126257
关键词
Electrocatalysis; Nanoscale plasma procesisng; Bimetal phosphide catalyst; Plasma nitrogen doping; Eco-friendly synthesis
资金
- National Natural Science Foundation of China [51862001, 11665005, 51672249]
- Natural Science Foundation of Jiangxi Province [20171ACB21049]
- Hundred-Talent Voyage Project of Jiangxi Province
- High-level Talents Startup & Innovation '5213' Plan of Xiaoshan district (Hangzhou city)
- Fundamental Research Funds of Zhejiang Sci-Tech University [2020Y005]
- Australian Research Council
- Centre for Materials Science, Queensland University of Technology
Chemical waste-free, in situ synthesis of customized earth-abundant-metal based catalysts for high-efficiency water splitting still remains a formidable challenge. Here, Ni-Co hydroxide nanosheets (NCHS) are sprouted from Ni-Co foam (NCF) using an eco-friendly, pure-water-based method, and then are phosphorized and nitrided in N-2 + P plasmas. The resulting N-doped Ni-Co phosphide catalyst (N-NiCoPx/NCF) exhibits excellent electrocatalytic performance, heralded by the low overpotentials of N-NiCoPx/NCF for generating a current density of 10 and 400 mA cm(-2) (j(10) and j(400)) in 1 M KOH of only 23 and 191 mV for the hydrogen evolution reaction (HER), and 298 and 410 mV for oxygen evolution reaction (OER), as well as by the low decay of high current density (j(100)) in the HER (6.02%) and OER (3.07%) processes for 100 h. Ab inito numerical simulations confirm that Co atom bonded with N represents the active center for overall water splitting.
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