材料科学
塔菲尔方程
催化作用
过电位
碳纳米管
纳米复合材料
钴
电解质
化学工程
复合数
钌
纳米颗粒
碳纤维
电化学
纳米技术
复合材料
电极
化学
冶金
有机化学
工程类
物理化学
作者
Zhangjie Li,Maolin Liu,Shufei Ma,Zhixin Jia,Demin Jia
出处
期刊:ACS applied energy materials
[American Chemical Society]
日期:2023-01-30
卷期号:6 (3): 1519-1525
被引量:5
标识
DOI:10.1021/acsaem.2c03404
摘要
Cheap, stable, and efficient catalysts were a prerequisite for the large-scale application of hydrogen energy. Herein, carbon nanotubes (CNTs) were utilized as the carbon source and compounded with Ti3C2 MXene sheets under liquid-phase conditions to fabricate the CNTs@Ti3C2 skeleton. Then, ruthenium (Ru) chloride and cobalt (Co) nitrate were introduced as the metal source and carbonized the mixture at high temperature to obtain carbon/MXene composites loaded with cobalt-ruthenium metal nanoparticles (CoRu/CNTs@Ti3C2). Thanks to the uniform dispersion of CoRu nanoparticles on the surface of the CNTs@Ti3C2 skeleton, more catalytic active sites were exposed and that endowed the composite with excellent hydrogen evolution reaction (HER) performance. Therefore, the obtained CoRu/CNTs@Ti3C2 composite exhibited a relatively low HER overpotential (η10) of 74 mV and a Tafel slope of 80 mV·dec–1 under acidic electrolyte (0.5 M H2SO4) with stable electrochemical activity (only increased by ∼10 mV after 3000 cycles testing). This work provided a feasible opportunity for the large-scale and low-cost production of stable and efficient catalysts for practical applications.
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