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Constructing heterogeneous interface between Co3O4 and RuO2 with enhanced electronic regulation for efficient oxygen evolution reaction at large current density.
Li, Weidong; Liu, Yuan; Chen, Zhihui; Peng, Binqiong; Ma, Qiang; Yue, Dan; Zhang, Bing; Qin, Bowen; Wang, Zhenling; Zhang, Yilei; Lu, Siyu.
Affiliation
  • Li W; College of Material Engineering, Henan International Joint Laboratory of Rare Earth Composite Materials, Henan University of Engineering, Zhengzhou, 451191, China.
  • Liu Y; School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou City 450001, China. Electronic address: liuyuan2020@haut.edu.cn.
  • Chen Z; College of Material Engineering, Henan International Joint Laboratory of Rare Earth Composite Materials, Henan University of Engineering, Zhengzhou, 451191, China.
  • Peng B; College of Material Engineering, Henan International Joint Laboratory of Rare Earth Composite Materials, Henan University of Engineering, Zhengzhou, 451191, China.
  • Ma Q; College of Material Engineering, Henan International Joint Laboratory of Rare Earth Composite Materials, Henan University of Engineering, Zhengzhou, 451191, China.
  • Yue D; College of Material Engineering, Henan International Joint Laboratory of Rare Earth Composite Materials, Henan University of Engineering, Zhengzhou, 451191, China.
  • Zhang B; College of Material Engineering, Henan International Joint Laboratory of Rare Earth Composite Materials, Henan University of Engineering, Zhengzhou, 451191, China.
  • Qin B; College of Material Engineering, Henan International Joint Laboratory of Rare Earth Composite Materials, Henan University of Engineering, Zhengzhou, 451191, China.
  • Wang Z; College of Material Engineering, Henan International Joint Laboratory of Rare Earth Composite Materials, Henan University of Engineering, Zhengzhou, 451191, China. Electronic address: zlwang2007@hotmail.com.
  • Zhang Y; Department of Mechanical Engineering, University of Canterbury, New Zealand.
  • Lu S; College of Chemistry, Zhengzhou University, No. 100 Science Avenue, Zhengzhou City 450001, China. Electronic address: sylu2013@zzu.edu.cn.
J Colloid Interface Sci ; 670: 272-278, 2024 Sep 15.
Article in En | MEDLINE | ID: mdl-38763023
ABSTRACT
Exploring effective strategies for developing new high-efficiency catalysts for water splitting is essential for advancing hydrogen energy technology. Herein, Co3O4/RuO2 heterojunction interface is construct through ion exchange reaction and pyrolysis. The as-synthesized Co3O4/RuO2-4 exhibits outstanding oxygen evolution reaction (OER) activity at the current density of 100 mA cm-2 with a low overpotential of 276 mV, and remarkable stability (maintaining activity for 60 h at 100 mA cm-2). Experimental results and theoretical calculations reveal that the electrons around the heterogeneous interface transferred from RuO2 to Co3O4, resulting in electron redistribution and optimization of energy barriers for OER intermediates. This unique composite catalyst structure offers a new potential for designing efficient oxygen electrocatalysts at large current density.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: J Colloid Interface Sci Year: 2024 Document type: Article
Fulltext
Print
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PubMed Links
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: J Colloid Interface Sci Year: 2024 Document type: Article