Journal
ELECTROCHIMICA ACTA
Volume 222, Issue -, Pages 455-462Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2016.10.198
Keywords
Nickel phosphide; Electrocatalysts; Urea electrolysis; Urea fuel cells; Hydrogen production
Categories
Funding
- National Natural Science Foundation of China [NSFC 21506182]
- China Postdoctoral Science Foundation [2016M590748]
- General Project of Education Department of Hunan Province [16C1537]
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Mesoporous nickel phosphide (Ni-P) nanocatalysts have been synthesized via a facile solvothermal strategy and used for urea electrooxidation in alkaline medium. The physicochemical properties and electrocatalytic performances have been investigated. Due to the structural effect and electronic effect, the Ni-P nanocatalysts achieve a lower overpotential, higher activity and better stability compared with the Ni nanocatalysts. Therefore, an onset oxidation potential of 1.37 V (vs. RHE), a peak current density of 70 mA cm(-2) and a good current retention of 58% for 1000 s at 1.52 V have been achieved by the Ni-P nanocatalysts, which show enhanced performance compared to the Ni nanocatalysts (1.42V, 62 mA cm(-2), 39% retention), a promising application of the mesoporous Ni- P nanocatalysts towards alkaline urea electrooxidation. (C) 2016 Elsevier Ltd. All rights reserved.
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