Sulfur-Decorated Molybdenum Carbide Catalysts for Enhanced Hydrogen Evolution
Sulfur-Decorated Molybdenum Carbide Catalysts for Enhanced Hydrogen Evolution
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用于增强析氢的硫装饰碳化钼催化剂
DOI:
10.1021/acscatal.5b01803
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发表时间:
2015-10
期刊:
影响因子:
--
通讯作者:
Dezhi Wang
中科院分区:
文献类型:
--
作者:
Chengkang Qi;Dezun Zhang;Zhuangzhi Wu;Dezhi Wang
A highly active and stable electrocatalyst (MoSx@Mo2C) for hydrogen evolution is developed via the sulfur decoration of molybdenum carbide for the first time. Although the decoration of sulfur reduced the electrochemically active surface area and slightly enlarged the impedance resistance of Mo2C substrates, the turnover frequency was remarkably enhanced, resulting in a great improvement in the final hydrogen evolution reaction activity. More importantly, there is a synergistic effect between MoSx and Mo2C, making the MoSx@Mo2C catalyst exhibit an excellent activity with a small Tafel slope of 44 mV dec–1, which is among the best records for Mo2C-based catalysts.
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