钌掺杂制备混合晶相碳化钼电解水析氢

摘要通过离子交换法,将Ru原子均匀负载于掺氮超薄碳化钼纳米片自组装的微米球表面,调节前驱体中钌的含量,从而调控了Ru-Mo_xC NFs中β-Mo₂C和α-MoC_1-x的比例,得到了具有优异性能的析氢催化剂Ru-Mo_xC NFs-4,由于混合晶相碳化钼具有更佳的氢吸附能和Ru与Mo₂C基底之间的协同作用,表现出了十分优异的析氢性能。Ru-Mo_xC NFs-4具有较低的过电位(η₁₀为49 mV和η₁₀₀为127 mV),Tafel斜率为51.3 mV·dec^-1,同时还具有良好的耐久性。这项研究为通过掺杂金属调控碳化物相组成设计高效析氢催化剂提供了新的思路。

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	张佳柱
	孙永利
	杨晓东
	杨娜
	姜斌
	肖晓明
	澹台晓伟
	张吕鸿

关键词：碳化钼制氢电化学钌

Abstract： Ru atoms were uniformly loaded on the surface of self-assembled micrometer spheres of nitrogen-doped ultrathin molybdenum carbide nanosheets by ion-exchange method, and the ratio of β-Mo₂C and α-MoC_1-x in Ru-Mo_xC NFs was adjusted by adjusting the content of ruthenium in the precursors, Ru-Mo_xC NFs-4 catalyst with excellent hydrogen precipitation performance was obtained, which exhibited very good hydrogen precipitation performance due to the better hydrogen adsorption energy of the mixed crystalline phase molybdenum carbide and the synergistic effect between Ru and Mo₂C substrates. Ru-Mo_xC NFs-4 exhibited low overpotentials (η₁₀=49 mV and η₁₀₀=127 mV), a Tafel slope of 51.3 mV·dec^-1, and good durability. This study provides a new idea for the design of efficient catalysts for hydrogen evolution reaction by tuning the carbide phase composition through doping with metals.

Keywords： molybdenum carbide hydrogen production electrochemistry ruthenium

Received 2023-05-08;

Fund:国家自然科学基金项目(22078233);天津市海洋局科技项目(19-3BC2014-01)。

Corresponding Authors: 张吕鸿,教授,E-mail:zhanglvh@tju.edu.cn。 Email: zhanglvh@tju.edu.cn

About author: 张佳柱(1997-),男,硕士研究生,研究方向为电催化析氢催化剂的性能研究。

引用本文:

张佳柱, 孙永利, 杨晓东, 杨娜, 姜斌, 肖晓明, 澹台晓伟, 张吕鸿.钌掺杂制备混合晶相碳化钼电解水析氢[J]. 化学工业与工程, 2024,41(5): 43-50

ZHANG Jiazhu, SUN Yongli, YANG Xiaodong, YANG Na, JIANG Bin, XIAO Xiaoming, TANTAI Xiaowei, ZHANG Lvhong.Ruthenium-doped preparation of mixed crystalline phase molybdenum carbide for hydrogen evolution reaction[J]. Chemcial Industry and Engineering, 2024,41(5): 43-50

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