The manipulation of rectifying contact of Co and nitrogen-doped carbon hierarchical superstructures toward high-performance oxygen reduction reaction  

作　　者：Jing Li Tingyu Lu Yu Fang Guangyao Zhou Mingyi Zhang Huan Pang Jun Yang Yawen Tang Lin Xu 

机构地区：[1]Jiangsu Key Laboratory of New Power Batteries,School of Chemistry and Materials Science,Jiangsu Collaborative Innovation Center of Biomedical Functional Materials,Nanjing Normal University,Nanjing,Jiangsu,China [2]College of Science,Jinling Institute of Technology,Nanjing,Jiangsu,China [3]Key Laboratory for Photonic and Electronic Bandgap Materials,Ministry of Education,School of Physics and Electronic Engineering,Harbin Normal University,Harbin,Heilongjiang,China [4]School of Chemistry and Chemical Engineering,Yangzhou University,Yangzhou,Jiangsu,China [5]State Key Laboratory of Multiphase Complex Systems,Center of Mesoscience,Institute of Process Engineering,Chinese Academy of Sciences,Beijing,China

出　　处：《Carbon Energy》2024年第9期338-349,共12页碳能源（英文）

基　　金：This study was financially supported by the National Natural Science Foundation of China(Grant/Award Number:22232004,22272179,21972068,and 22072067).

摘　　要：Rational design and construction of oxygen reduction reaction(ORR)electrocatalysts with high activity,good stability,and low price are essential for the practical applications of renewable energy conversion devices,such as metal-air batteries.Electronic modification through constructing metal/semiconductor Schottky heterointerface represents a powerful strategy to enhance the electrochemical performance.Herein,we demonstrate a concept of Schottky electrocatalyst composed of uniform Co nanoparticles in situ anchored on the carbon nanotubes aligned on the carbon nanosheets(denoted as Co@N-CNTs/NSs hereafter)toward ORR.Both experimental findings and theoretical simulation testify that the rectifying contact could impel the voluntary electron flow from Co to N-CNTs/NSs and create an internal electric field,thereby boosting the electron transfer rate and improving the intrinsic activity.As a consequence,the Co@N-CNTs/NSs deliver outstanding ORR activity,impressive long-term durability,excellent methanol tolerance,and good performance as the air-cathode in the Zn-air batteries.The design concept of Schottky contact may provide the innovational inspirations for the synthesis of advanced catalysts in sustainable energy conversion fields.

关 键 词：Co-based ELECTROCATALYSTS oxygen reduction reaction rectifying CONTACT Zn-air BATTERIES 

分 类 号：TM911.41[电气工程—电力电子与电力传动]