过电位
塔菲尔方程
材料科学
电催化剂
催化作用
电解质
碳纳米管
化学工程
氢
电导率
碳纤维
电化学
纳米技术
分解水
无机化学
电极
复合材料
物理化学
有机化学
化学
复合数
工程类
光催化
作者
Mengting Chen,Xiumei Jian,Huancheng Wu,James Huang,Weipeng Liu,Yingju Liu
出处
期刊:Nanotechnology
[IOP Publishing]
日期:2020-02-28
卷期号:31 (20): 205403-205403
被引量:21
标识
DOI:10.1088/1361-6528/ab71b4
摘要
As a substitute of Pt-based catalysts, MoS2-based catalysts have been widely used in hydrogen evolution reaction, but the inherent low conductivity, limited active edges, self-stacking and agglomeration still hinder their activities. In this work, Mn-doped MoS2 nanosheets were vertically anchored on carbon nanotubes (CNTs) by the one-step hydrothermal reaction, in which Mn-O-C/Mo-O-C was considered as a bridge between Mn-MoS2 and CNTs. The doping of the Mn element enables the spreading of MoS2 on CNTs and the rapid escape of hydrogen bubbles from the electrode, while conductive CNTs with hydrophilicity can accelerate the electron transport process between the electrolyte and the material. With an overpotential of 150 mV at a current density of -10 mA cm-2 and a Tafel slope of 39 mV dec-1, this material exhibited excellent catalytic hydrogen evolution activity, which could open the path for designing commercial electrocatalysts.
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