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
Science China Materials | 2024年 / 67卷
关键词
oxygen evolution reaction; defect engineering; anion defects and cation defects;
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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.
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页码:771 / 779
页数:8
相关论文
共 3 条
  • [1] Dual-defective-engineered RuO2/D-Co3O4/CC composite as efficient electrocatalysts for triggering oxygen evolution reaction in acidic media
    Liu, Yujie
    Yuan, Zhaoshuo
    Song, Qi
    Xu, Tongguang
    He, Gang
    Sun, Haixiao
    Qiao, Qian
    Guan, Xuefeng
    Xu, Tao
    Dai, Xiaoping
    Zhang, Xin
    SCIENCE CHINA-MATERIALS, 2024, 67 (03) : 771 - 779
  • [2] 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(英文)<iclass="icon-zqcb"></i>
    刘玉洁
    袁兆朔
    宋琪
    徐同广
    何刚
    孙海晓
    乔倩
    管学峰
    徐焘
    代小平
    张鑫
    ScienceChina(Materials), 2024, 67 (03) : 771 - 779
  • [3] 双缺陷工程RuO/D-CoO/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(英文)
    刘玉洁
    袁兆朔
    宋琪
    徐同广
    何刚
    孙海晓
    乔倩
    管学峰
    徐焘
    代小平
    张鑫
    Science China(Materials), 2024, 67 (03)