Electrodeposited Mo3S13 Films from (NH4)2Mo3S13•2H2O for Electrocatalysis of Hydrogen Evolution Reaction
Electrodeposited Mo3S13 Films from (NH4)2Mo3S13•2H2O for Electrocatalysis of Hydrogen Evolution Reaction
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(NH4)2Mo3S13·2H2O电沉积Mo3S13薄膜用于电催化析氢反应
DOI：
10.1021/acsami.7b01333
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发表时间：
2017-06-07
影响因子：
9.5
通讯作者：
Li, Meixian
中科院分区：
文献类型：
--
作者：
Du, Kuangzhou;Zheng, Lirong;Li, Meixian
硫化钼被认为是一种廉价高效的析氢反应电催化剂。为了进一步提高硫化钼的电催化活性，本文采用电沉积的方法制备了高硫钼比的Mo3S13薄膜。Mo3S13薄膜表现出高效的HER电催化活性，在过电位为200 mV时电流密度为10 mA/cm(2)，起始电位为130 mV vs RHE， Tafel斜率为37 mV/dec，优于其他已报道的MoS2薄膜。高的电催化活性归因于高的桥接S-2（2-）和顶端S2-百分比以及良好的导电性。该研究为设计新型硫化钼电催化剂提供了一条途径。
Molybdenum sulfides are considered to be one kind of the promising candidates as cheap and efficient electrocatalysts for hydrogen evolution reaction (HER). But this is still a gap on electrocatalytic performance toward Pt. To further enhance electrocatalytic activity of molybdenum sulfides, in this work, we prepared Mo3S13 films with high ratio of sulfur to molybdenum by electrodeposition. The Mo3S13 films exhibit highly efficient electrocatalytic activity for HER and achieve a current density of 10 mA/cm(2) at an overpotential of 200 mV with an onset potential of 130 mV vs RHE and a Tafel slope of 37 mV/dec, which is superior to other reported MoS2 films. The highly electrocatalytic activity is attributed to high percentage of bridging S-2(2-) and apical S2- as well as good conductivity. This study provides an avenue for designing new molybdenum sulfides electrocatalysts.