Zhang Nan, Gan Shiyu, Wu Tongshun, Ma Weiguang, Han Dongxue, Niu Li
†State Key Laboratory of Electroanalytical Chemistry, c/o Engineering Laboratory for Modern Analytical Techniques, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Jilin, China.
‡University of the Chinese Academy of Sciences, Beijing 100039, China.
ACS Appl Mater Interfaces. 2015 Jun 10;7(22):12193-202. doi: 10.1021/acsami.5b02586. Epub 2015 May 26.
To greatly improve the hydrogen evolution reaction (HER) performance, it is the key approach to expose as many active edges of MoS2 as possible. This target is the research hotspot and difficulty of MoS2 which is a promising HER catalyst. In this work, we realized the active-edges control of MoS2 nanosheets on carbon cloth (CC) by growth control during the synthesis procedure. Moreover, MoS2 nanosheets vertically grown on carbon cloth (MoS2⊥CC) was confirmed to be the best morphology with maximum active edges exposed. Multifactors structure control resulted in abundant active-edges exposure and effective electron delivery, thus excellent HER activity. This three-dimensional cathode, MoS2⊥CC, can reach a great current density of 200 mA/cm(2) at a small overpotential of 205 mV. The preeminent HER performance can rival the best MoS2-based catalyst ever reported.
为了大幅提高析氢反应（HER）性能，关键方法是尽可能多地暴露二硫化钼（MoS2）的活性边缘。这一目标是极具前景的HER催化剂MoS2的研究热点和难点。在这项工作中，我们通过合成过程中的生长控制实现了碳布（CC）上MoS2纳米片的活性边缘控制。此外，垂直生长在碳布上的MoS2纳米片（MoS2⊥CC）被证实是具有最大活性边缘暴露的最佳形态。多因素结构控制导致大量活性边缘暴露和有效的电子传递，从而具有优异的HER活性。这种三维阴极MoS2⊥CC在205 mV的小过电位下可达到200 mA/cm²的大电流密度。其卓越的HER性能可与有史以来报道的最佳MoS2基催化剂相媲美。
