摘要
Hollow nitrogen-doped porous carbon materials covered with different thicknesses of carbon layers were synthesized to assist evaluation of the influence of nitrogen atom on the surrounding carbon atoms.The designed carbon-based materials were synthesized through pyrolysis of surface-attached block copolymer layers on silica nanoparticles with different thicknesses of the second block of grafted polymer chains,followed by removal of silica templates.The experimental results reveal that coverage a carbon layer with proper thickness can improve the oxygen reaction reduction activity of nitrogen-doped carbon materials as evidenced by the positive shift of half-wave potential in linear scanning voltammetry response curves.The conclusions may provide a reference work on understanding the active sites and designing materials with superior electrochemical performance.
作者
TAO Bowen
PAN Xiangchuan
张海宁
TAO Bowen;PAN Xiangchuan;ZHANG Haining(State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology,Wuhan 430070,China)
基金
Funded by the Guangdong Key R&D Program(2020B0909040001)
the Opening Project of State Key Laboratory of Advanced Technology for Float Glass(2018KF03)。