文献类型：期刊文献

中文题名：Scalable solid-phase synthesis of defect-rich graphene for oxygen reduction electrocatalysis

作者：Chunxiao Dong[1,2];Li Yang[3];Cheng Lian[4];Xiaoling Yang[1];Yihua Zhu[1];Hongliang Jiang[2];Chunzhong Li[1,2]

机构：[1]Shanghai Engineering Research Center of Hierarchical Nanomaterials,School of Materials Science and Engineering,East China University of Science and Technology,Shanghai,200237,China;[2]Key Laboratory for Ultrafine Materials of Ministry of Education,School of Chemical Engineering,East China University of Science and Technology,Shanghai,200237,China;[3]Institutes of Physical Science and Information Technology,Anhui University,Hefei,Anhui,230601,China;[4]School of Chemistry and Molecular Engineering,East China University of Science and Technology,Shanghai,200237,China

年份：2023

卷号：8

期号：1

起止页码：224

中文期刊名：Green Energy & Environment

外文期刊名：绿色能源与环境（英文版）

收录：CSTPCD;;Scopus;CSCD:【CSCD2023_2024】；

基金：supported by the National Natural Science Foundation of China(21838003,91834301 and 21978278);the Shanghai Scientific and Technological Innovation Project(18JC1410500 and 19JC1410400);the Fundamental Research Funds for the Central Universities(222201718002).

语种：英文

中文关键词：Carbon materials;Electrocatalysis;Oxygen reduction reaction;Solid-phase synthesis;Zn-air battery

摘要：Defect-engineered carbon materials have been emerged as promising electrocatalysts for oxygen reduction reaction(ORR)in metal-air batteries.Developing a facile strategy for the preparation of highly active nanocarbon electrocatalysts remains challenging.Herein,a low-cost and simple route is developed to synthesize defective graphene by pyrolyzing the mixture of glucose and carbon nitride.Molecular dynamics simulations reveal that the graphene formation is ascribed to two-dimensional layered feature of carbon nitride,and high compatibility of carbon nitride/glucose systems.Structural measurements suggest that the graphene possesses rich edge and topological defects.The graphene catalyst exhibits higher power density than commercial Pt/C catalyst in a primary Zn-air battery.Combining experimental results and theoretical thermodynamic analysis,it is identified that graphitic nitrogen-modified topological defects at carbon framework edges are responsible for the decent ORR performance.The strategy presented in this work can be can be scaled up readily to fabricate defective carbon materials.