共 3 条
Dual-defective-engineered RuO2/D-Co3O4/CC composite as efficient electrocatalysts for triggering oxygen evolution reaction in acidic media双缺陷工程RuO2/D-Co3O4/CC复合材料作为引发酸 性介质中氧析出反应的高效电催化剂
被引:0
|作者:
Yujie Liu
Zhaoshuo Yuan
Qi Song
Tongguang Xu
Gang He
Haixiao Sun
Qian Qiao
Xuefeng Guan
Tao Xu
Xiaoping Dai
Xin Zhang
机构:
[1] China University of Petroleum,State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering
[2] Beijing Third Class Tobacco Supervision Station,undefined
来源:
关键词:
oxygen evolution reaction;
defect engineering;
anion defects and cation defects;
D O I:
暂无
中图分类号:
学科分类号:
摘要:
Defect engineering is widely acknowledged as an effective strategy for improving catalyst performance by increasing the abundance of active sites and optimizing binding energies. Herein, dual-defective-engineered RuO2/D-Co3O4/CC composite was fabricated using a straightforward process involving electrodeposition and acid etching method to improve the oxygen evolution reaction (OER) with low Ru loading (2.42 wt%) in acidic media. The RuO2/D-Co3O4/CC catalyst was thoroughly characterized using physicochemical techniques, revealing the presence of both anionic and cationic defects in RuO2/D-Co3O4/CC. Experimental studies demonstrate that the optimized RuO2/D-Co3O4/CC with dual defects enhances the electrochemically exposed active sites and effectively reduces the dependence of the catalytic reaction on the concentration of protons in the electrolyte, thereby triggering high-performance OER. A mere 181 mV overpotential is needed to achieve a current density of 10 mA cm−2, and it can sustain uninterrupted continuous electrolysis at this current density for 120 h. This characteristic renders it a highly promising electrocatalyst for acidic OER.
引用
收藏
页码:771 / 779
页数:8
相关论文