Synergistic tuning of electrochemical surface area and surface Co3+ by oxygen plasma enhances the capacities of Co3O4 lithium–oxygen battery cathodes

• Published in: Chinese chemical letters Vol. 32; no. 11; pp. 3491 - 3495
• Main Authors: Guo, Xueli, Xiao, Liang, Yan, Pengfei, Li, Ming, Zhu, Mingjun, Liu, Jinping
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.11.2021; School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070,China%Beijing Key Laboratory of Microstructure and Property of Solids,Faculty of Materials and Manufacturing,Beijing University of Technology,Beijing 100124,China%School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070,China%School of Chemistry,Chemical Engineering and Life Science,Wuhan University of Technology,Wuhan 430070,China; Key Laboratory for Photonic and Electronic Bandgap Materials,Ministry of Education,School of Physics and Electronic Engineering,Harbin Normal University,Harbin 150025,China; School of Chemistry,Chemical Engineering and Life Science,Wuhan University of Technology,Wuhan 430070,China%School of Chemistry,Chemical Engineering and Life Science,Wuhan University of Technology,Wuhan 430070,China
• Subjects: Co3+-rich surface; Co3O4 nanosheet arrays; Electrochemical surface area; Oxygen plasma; Oxygen vacancy; Electrochemical surface area; Oxygen plasma; Co3O4 nanosheet arrays; Co3+-rich surface; Oxygen vacancy

The synergistic effects of enhanced electrochemical surface area, modest oxygen vacancy and high surface Co3+ concentration introduced via oxygen plasma etching extremely improve the reversible capacity of Co3O4 NAs cathode for lithium–oxygen batteries. [Display omitted] Modifying electrochemical su...