过电位
氧还原反应
催化作用
密度泛函理论
石墨烯
离解(化学)
材料科学
化学工程
Atom(片上系统)
化学
纳米技术
氧气
化学物理
电化学
计算化学
有机化学
电极
计算机科学
物理化学
工程类
嵌入式系统
作者
Min Yan,Zhongxu Dai,Shaona Chen,Lijing Dong,Xiao Li Zhang,Yongjun Xu,Chenghua Sun
标识
DOI:10.1021/acs.jpcc.0c03930
摘要
Essentially, the performance of single-atom catalysts (SACs) has been strongly affected by their supports. Herein, the structural, electronic, and catalytic properties of single-iron catalysts over defective graphene have been investigated under the scheme of density functional theory for the oxygen reduction reaction. Graphene with single and double vacancies offers the excellent capacity to anchor single iron, forming Fe–N3 and Fe–N4 bonding networks. Among these concept catalysts, Fe–N4 located at double vacancies offers the highest catalytic activity with an overpotential of 0.81 V via the HOOH dissociation pathway, which allows Fe/DVG-N4 to be regarded as available, low-cost, and high-efficiency catalyst.
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