A CNT@MoSe2 hybrid catalyst for efficient and stable hydrogen evolution
A CNT@MoSe2 hybrid catalyst for efficient and stable hydrogen evolution
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用于高效稳定析氢的 CNT@MoSe2 混合催化剂
DOI：
10.1039/c5nr05739f
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发表时间：
2015-01-01
期刊：
影响因子：
6.7
通讯作者：
Liu, Tianxi
中科院分区：
文献类型：
--
作者：
Huang, Yunpeng;Lu, Hengyi;Liu, Tianxi
开发高效的无铂析氢电化学催化剂是可持续发展和无二氧化碳能源转换系统的一大挑战。在这项工作中，通过一步溶剂热反应合成了一个独特的分层纳米结构的少层MoSe 2纳米片垂直生长在碳纳米管（CNT）。这种基于高导电性CNT基底的合理设计的架构具有完全暴露的活性边缘和用于快速离子/电子转移的开放结构，从而导致显著的HER活性，具有-0.07 V vs. RHE（可逆氢电极）的低起始电位、每十倍58 mV的小塔菲尔斜率和优异的长循环稳定性。因此，这种不含贵金属且高效的催化剂可用于工业可再生氢气生产。
Exploration of high-efficiency Pt-free electrochemical catalysts for hydrogen evolution reaction (HER) is considered as a great challenge for the development of sustainable and carbon dioxide free energy conversion systems. In this work, a unique hierarchical nanostructure of few-layered MoSe2 nanosheets perpendicularly grown on carbon nanotubes (CNTs) is synthesized through a one-step solvothermal reaction. This rationally designed architecture based on a highly conductive CNT substrate possesses fully exposed active edges and open structures for fast ion/electron transfer, thus leading to remarkable HER activity with a low onset potential of -0.07 V vs. RHE (reversible hydrogen electrode), a small Tafel slope of 58 mV per decade and excellent long-cycle stability. Therefore, this noble-metal-free and highly efficient catalyst enables prospective applications for industrial, renewable hydrogen production.