Three-dimensional amorphous tungsten-doped nickel phosphide microsphere as an efficient electrocatalyst for hydrogen evolution

Amorphous tungsten-doped nickel phosphide (a-WNP) microspheres with three-dimensional (3D) ravine-like nanostructures on the surface were successfully fabricated viaa fast and facile grain-mediated electroless method. The resulting W-doped Ni sub(x)P exhibits an outstanding electrocatalytic activity...

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Published in:Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2014-01, Vol.2 (43), p.18593-18599
Main Authors: Jin, Zhaoyu, Li, Panpan, Huang, Xing, Zeng, Guangfeng, Jin, Yong, Zheng, Baozhan, Xiao, Dan
Format: Article
Language:English
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Summary:Amorphous tungsten-doped nickel phosphide (a-WNP) microspheres with three-dimensional (3D) ravine-like nanostructures on the surface were successfully fabricated viaa fast and facile grain-mediated electroless method. The resulting W-doped Ni sub(x)P exhibits an outstanding electrocatalytic activity for hydrogen evolution reaction with a low onset potential of -50 mV, overpotential of 110 mV at 20 mA cm super(-2), and small Tafel slope of 39 mV dec super(-1). The amorphous architecture and the doping of W are considered to be major contributions for the improvement of catalytic performance. The results in this paper might promote a new route to gain both amorphous and doped materials with special electrochemical properties for advanced catalysts and other devices.
ISSN:2050-7488
2050-7496
DOI:10.1039/C4TA04434G