Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 762, Issue -, Pages 637-642Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2018.05.249
Keywords
Co doping; Worm-like Cu2S; Electrocatalyst; Alkaline water oxidation
Categories
Funding
- Key Technologies Research and Development Program of Sichuan Province [2017GZ0419]
- Innovative Entrepreneurial Training Program for College Students of Sichuan University [201710610727]
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Highly efficient water oxidation electrocatalyst plays an important role in many renewable oxygen - based electrochemical technologies like fuel cells, metal-air batteries, and water splitting devices. In this communication, we report the in-situ hydrothermal sulfidization preparation of a Co doped worm - like Cu2S directly grown on copper foam (Co-Cu2S/CF) and further application as an efficient and stable electrocatalyst for alkaline water oxidation. In 1.0 M KOH, it needs overpotentials as low as 298 and 357 mV to afford 20 and 50 mA cm(-2), respectively, comparing favourably to pure Cu2S counterpart (Cu2S/CF) and most Cu based catalysts in alkaline media. Notably, it is also durable with high turnover frequency values of 0.137 and 0.473 mol O-2 s(-1) at overpotentials of 400 and 500 mV, respectively. (C) 2018 Published by Elsevier B.V.
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