Co1-xS embedded in porous carbon derived from metal organic framework as a highly efficient electrocatalyst for oxygen evolution reaction

论文摘要

Developing active, robust, and cost-efficient electrocatalysts is critical for oxygen evolution reaction（OER）. Here, a novel composite catalyst of Co1-xS embedded in porous dodecahedron carbon hybrid was synthesized by a two-step conversion protocol of a cobalt-based metal-organic framework（ZIF-67）. The porous dodecahedron Co1-xS@C composite catalyst was prepared by direct oxidation of ZIF-67 followed by sulfurization reaction. The Co1-xS@C composite exhibit superior OER performance, including a low overpotential of 260 mV for 10 mA/cm2, a small Tafel slope of 85 mV/dec, outstanding stability over 80 h and almost 100% Faradaic efficiency. The various material characterizations indicate that the excellent activity and strong stability of Co1-xS@C might be attributed to good conductivity of Co1-xS, mesoporous nanostructure, and synergistic effect of Co1-xS encapsulated within porous carbon. This work provides a novel strategy for designing and synthesizing advanced composite electrocatalysts

论文目录

文章来源

类型: 期刊论文

作者: Denghong He,Xiaolin Wu,Wei Liu,Chaojun Lei,Chunlin Yu,Guokui Zheng,Junjie Pan,Lecheng Lei,Xingwang Zhang

来源: Chinese Chemical Letters 2019年01期

年度: 2019

分类: 工程科技Ⅰ辑

专业: 化学,无机化工

单位: Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University

基金: supported by China Major Science and Technology Program for Water Pollution Control and Treatment (No. 2017ZX07101003),Zhejiang Provincial Natural Science Foundation of China (No. LR17B060003),financially supported by the National Science Foundation of China (Nos. 21436007,21522606,21476201,21676246,U1462201,and 21776248)

分类号: O643.36;TQ116.1

页码: 229-233

总页数: 5

文件大小: 5955K

下载量: 14

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