Journal
ELECTROCHIMICA ACTA
Volume 242, Issue -, Pages 25-30Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2017.05.001
Keywords
efficient electrocatalyst; Ni0.85Se; solvothermal reaction; hydrogen evolution reaction
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Funding
- National High Technology Research and Development Program of China [2015AA034202]
- National Natural Science Foundation of China [51372033]
- 111 Project [B13042]
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The efficient generation of hydrogen through the electro-splitting of water has triggered great attention. However, low-cost and efficient electrocatalysts for the hydrogen evolution reaction is still a major challenge. Herein, for the first time, nanocrystalline Ni0.85Se is synthesized through a facile DMF-solvothermal reaction. Compared to hydrothermally synthesized Ni0.85Se (H-Ni0.85Se) with relatively poor HER performance, the DMF-solvothermally synthesized Ni0.85Se (D-Ni0.85Se) exhibits much better electrocatalytic performance. D-Ni0.85Se exhibits a very low onset overpotential (similar to- 170 mV in 0.5 M H2SO4), a very small Tafel slope (49.3 mV dec (1)), a high cathode current density (30 mA cm (2) at similar to- 275 mV vs RHE), and excellent long-term stability. It is promising for D-Ni0.85Se as a novel and highly efficient non-noble-metal electrocatalyst to replace precious Pt-based catalysts for hydrogen evolution. (C) 2017 Elsevier Ltd. All rights reserved.
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