MOF衍生CoP/C的制备、表征及电化学析氢性能

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Abstract Carbon-coated cobalt phosphide (CoP/C) powders were prepared by high temperature pre-annealing and further phosphating using Zeolitic Imidazolate Framework-67 (ZIF-67) and Co(NO₃)₂∙6H₂O as precursor. CoP/C powders were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM), and the electrocatalytic hydrogen evolution experiments were also carried out. The results show that after calcination at high temperature, the organic components of ZIF-67 are transformed into conductive carbon skeleton, and cobalt ions are transformed into elemental cobalt nanoparticles embedded in the carbon skeleton. After further phosphating, pure phase CoP/C powders are obtained. CoP/C powders exhibit good catalytic activity with an overpotential of 64 mV and a Tafel slope of 66 mV/dec, which maintains high catalytic activity after 15 h for electrocatalytic hydrogen evolution.

Key words： metal-organic framework (MOF) MOF derivatives cobalt phosphide electrocatalytic hydrogen evolution

Received: 22 April 2019 Published: 14 November 2019

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	Articles by authors
	HUANG Linjun
	CAO Xinxin
	ZHENG Zhihe
	TANG Yan
	LIANG Shuquan

Cite this article:

HUANG Linjun,CAO Xinxin,ZHENG Zhihe, et al. Preparation, characterization and electrochemical hydrogen evolution of MOF-derived CoP/C[J]. Materials Science and Engineering of Powder Metallurgy, 2019, 24(5): 467-473.

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http://pmbjb.csu.edu.cn/EN/ OR http://pmbjb.csu.edu.cn/EN/Y2019/V24/I5/467

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