Journal
CATALYSIS COMMUNICATIONS
Volume 124, Issue -, Pages 1-5Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.catcom.2019.02.012
Keywords
Water electrolysis; Hydrogen evolution reaction; Carbon spheres; Transition metal phosphides
Categories
Funding
- Natural Science Foundation of Jiangsu Province of China [BK20160239]
- Foundation of Science and Technology Project of Xuzhou City [KC18063]
- Foundation of Jiangsu Province Engineering Laboratory of High Efficient Energy Storage Technology and Equipments [[2017]975-18]
- Foundation of Xuzhou City Key Laboratory of High Efficient Energy Storage Technology and Equipments [KH17078]
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In this study, a low-cost cobalt-nickel phosphides@carbon spheres was developed as catalyst for the hydrogen evolution reaction (HER) via a facile two-step method. The structure of as-prepared phosphides was characterized by scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy and N-2 adsorption-desorption isotherms. In the 0.5 M H2SO4 electrolyte, the optimized sample, namely Co1Ni1-P@C, delivers an overpotential of 169 mV for HER at the current density of 10 mA cm(-2) with excellent stability. The results showed that the composition of obtained cobalt-nickel phosphides plays a critical role in enhancing the HER electrocatalytic performance.
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