title: Topological Defects in Metal-Free Nanocarbon for Oxygen Electrocatalysis.
abstract: A bifunctional graphene catalyst with abundant topological defects is achieved via the carbonization of natural gelatinized sticky rice to probe the underlying oxygen electrocatalytic mechanism. A nitrogen-free configuration with adjacent pentagon and heptagon carbon rings is revealed to exhibit the lowest overpotential for both oxygen reduction and evolution catalysis. The versatile synthetic strategy and novel insights on the activity origin facilitate the development of advanced metal-free carbocatalysts for a wide range of electrocatalytic applications.
authors.affiliation: Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, P. R. China.|Queen Mary University of London, School of Engineering and Materials Science, Mile End Road, E1 4NS, London, UK.
authors.forename: Cheng
authors.initials: C
authors.lastname: Tang
authors.affiliation: Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, P. R. China.
authors.forename: Hao-Fan
authors.initials: HF
authors.lastname: Wang
authors.affiliation: Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, P. R. China.
authors.forename: Xiang
authors.initials: X
authors.lastname: Chen
authors.affiliation: Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, P. R. China.
authors.forename: Bo-Quan
authors.initials: BQ
authors.lastname: Li
authors.affiliation: Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, P. R. China.
authors.forename: Ting-Zheng
authors.initials: TZ
authors.lastname: Hou
authors.affiliation: Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, P. R. China.
authors.forename: Bingsen
authors.initials: B
authors.lastname: Zhang
authors.affiliation: Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, P. R. China.|Queen Mary University of London, School of Engineering and Materials Science, Mile End Road, E1 4NS, London, UK.
authors.forename: Qiang
authors.initials: Q
authors.lastname: Zhang
authors.affiliation: Queen Mary University of London, School of Engineering and Materials Science, Mile End Road, E1 4NS, London, UK.
authors.forename: Maria-Magdalena
authors.initials: MM
authors.lastname: Titirici
authors.affiliation: Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, P. R. China.
authors.forename: Fei
authors.initials: F
authors.lastname: Wei
keywords: nanocarbon catalysis; nitrogen doping; oxygen evolution; oxygen reduction; topological defects