电催化剂
塔菲尔方程
电解质
材料科学
化学工程
电解
过电位
电解水
电化学
纳米技术
碱金属
无机化学
催化作用
化学
电极
有机化学
物理化学
工程类
作者
Yuhao Fan,Yuan Yu,Dongfeng Sun,Yanning Qu,Linyin Huang,Xinyue Wei,Qingmei Su,Gaohui Du,Bingshe Xu,Kai Wang
标识
DOI:10.1016/j.jallcom.2023.173354
摘要
In this paper, a novel three-dimensional (3D) MoS2/CoS2 micro-nano heterostructured electrocatalyst has been successfully derived from ZIF-67 on carbon cloth (CC) by a simple method of low temperature vulcanization. The metal-organic framework (MOFs) of ZIF-67 on CC was obtained at room temperature and used as both the precursor of Co and structure template to construct the 3D self-supporting spindle CoS2 nanodiscs on CC. Large amounts of 2D MoS2 nanosheets were subsequently grown on the surface of spindle-shaped CoS2 nanodiscs to form 3D self-supporting MoS2/CoS2/CC heterostructural electrocatalyst. This 3D self-supporting heterostructural electrocatalyst showed good hydrogen evolution reaction (HER) performance in both acid and alkali electrolytes. At 10 mA/cm2, the HER overpotentials of the MoS2/CoS2/CC heterostructural electrocatalyst in the alkali and acid electrolyte were 147 mV and 119 mV, and their corresponding Tafel slopes were 90.5 mV dec−1 and 111.4 mV dec−1, respectively, indicating that this MoS2/CoS2/CC heterostructural electrocatalyst had a good application prospect in the electrolysis of water to produce hydrogen. Moreover, this work provides a new idea for low-cost, scale fabrication of 3D self-supporting heterostructured transition metal sulfide catalysts.
科研通智能强力驱动
Strongly Powered by AbleSci AI