Construction of a sp3/sp2 Carbon Interface in 3D N‐Doped Nanocarbons for the Oxygen Reduction Reaction
File version
Author(s)
Wang, Yun
Wu, Haihua
Liu, Xi
Wang, Leilei
Yu, Qiaolin
Li, Aowen
Wang, Hong
Song, Chuqiao
Gao, Zirui
Peng, Mi
Zhang, Mengtao
Ma, Na
Wang, Jiaou
Zhou, Wu
Wang, Guoxiong
Yin, Zhen
Ma, Ding
Griffith University Author(s)
Primary Supervisor
Other Supervisors
Editor(s)
Date
Size
File type(s)
Location
License
Abstract
The development of highly efficient metal‐free carbon electrocatalysts for the oxygen reduction reaction (ORR) is one very promising strategy for the exploitation and commercialization of renewable and clean energy, but this still remains a significant challenge. Herein, we demonstrate a facile approach to prepare three‐dimensional (3D) N‐doped carbon with a sp3/sp2 carbon interface derived from ionic liquids via a simple pyrolysis process. The tunable hybrid sp3 and sp2 carbon composition and pore structures stem from the transformation of ionic liquids to polymerized organics and introduction of a Co metal salt. Through tuning both composition and pores, the 3D N‐doped nanocarbon with a high sp3/sp2 carbon ratio on the surface exhibits a superior electrocatalytic performance for the ORR compared to that of the commercial Pt/C in Zn–air batteries. Density functional theory calculations suggest that the improved ORR performance can be ascribed to the existence of N dopants at the sp3/sp2 carbon interface, which can lower the theoretical overpotential of the ORR.
Journal Title
Angewandte Chemie-International Edition
Conference Title
Book Title
Edition
Volume
58
Issue
42
Thesis Type
Degree Program
School
Publisher link
Patent number
Funder(s)
Grant identifier(s)
Rights Statement
Rights Statement
Item Access Status
Note
Access the data
Related item(s)
Subject
Chemical sciences
Science & Technology
Physical Sciences
Chemistry, Multidisciplinary
Chemistry
electrocatalysis
Persistent link to this record
Citation
Gao, J; Wang, Y; Wu, H; Liu, X; Wang, L; Yu, Q; Li, A; Wang, H; Song, C; Gao, Z; Peng, M; Zhang, M; Ma, N; Wang, J; Zhou, W; Wang, G; Yin, Z; Ma, D, Construction of a sp3/sp2 Carbon Interface in 3D N‐Doped Nanocarbons for the Oxygen Reduction Reaction, Angewandte Chemie-International Edition, 2019, 58 (42), pp. 15089-15097