燃料化学学报（中英文）2023，Vol.51Issue(5)：581-588,8.DOI:10.1016/S1872-5813(22)60067-7
空心氮掺杂碳球锚定单原子铁位点用于高效电催化氧还原反应
Hollow N-doped carbon spheres with anchored single-atom Fe sites for efficient electrocatalytic oxygen reduction
摘要
Abstract
We anchored atomically dispersed Fe-N4 sites on hollow N-doped carbon spheres (Fe SAs/HNCSs-800) for electrocatalytic ORR; the obtained material exhibited electrocatalytic activity and stability comparable to that of commercial Pt/C, with an onset potential of 0.925 V and a half-wave potential of 0.867 V. Aberration-corrected high-angle annular dark-field scanning transmission electron microscopy and X-ray absorption spectroscopy results confirmed the presence of highly dispersed Fe single atoms in Fe SAs/HNCSs-800. The results of experiments and theoretical calculations show that the single-atom dispersed Fe-N4 serve as the ORR active sites, and the adjacent C defects can effectively regulate the electronic structure of Fe atoms and improve the electrocatalytic ORR activity.关键词
氮掺杂空心碳球/Fe-N4位点/单原子/氧还原反应/电催化剂Key words
hollow N-doped carbon spheres/Fe-N4 sites/single atoms/oxygen reduction reaction/electrocatalysts分类
化学化工引用本文复制引用
王敏敏,冯超,柳云骐,潘原..空心氮掺杂碳球锚定单原子铁位点用于高效电催化氧还原反应[J].燃料化学学报（中英文）,2023,51(5):581-588,8.基金项目
The project was supported by National Natural Science Foundation of China(22108306),Taishan Scholars Program of Shandong Province(tsqn201909065)and Shandong Provincial Natural Science Foundation(ZR2021YQ15,ZR2020QB174). （22108306）
