One-step novel synthesis of Co2P/CoP and its hydrogen evolution reaction performance in alkaline media
Materials Chemistry and Physics(2022)
摘要
Electrochemical water electrolysis is an efficient important way to produce hydrogen. In this work, durable and low-cost Co2P/CoP was synthesized by a facile one-step calcination reaction. Subsequently, Co2P/CoP was characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microcopy (TEM), X-ray photoelectron spectra (XPS). To evaluate the electrocatalytic hydrogen evolution activity, Co2P/CoP was measured by electrochemical tests. Co2P/CoP exhibited excellent HER performance with a small overpotential of 196 mV at a current density of 10 mA cm−2 and a smaller Tafel slope of 53 mV dec−1 in alkaline media. Moreover, Co2P/CoP exhibited superior stability with long-term operation of 24 h.
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关键词
Co2P/CoP,HER,Stability
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