A Directional Synthesis for Topological Defect in Carbon



Publication Details

Wang, X., Jia, Y., Mao, X., Zhang, L., Liu, D., Song, L., Yan, X., Chen, J., Yang, D., Zhou, J., Wang, K., Du, A. & Yao, X. (2020). A Directional Synthesis for Topological Defect in Carbon. Chem, 6 (8), 2009-2023.


© 2020 Elsevier Inc. Recently, defect electrocatalysis has become a research focus with significant advances. However, the control synthesis of target defects is still challenging to date, which is prerequisite for deeply understanding the intrinsic activity origin of metal-free catalysts. Herein, inspired by the theoretical demonstration, we report a general edge-engineering strategy to fulfill controlling definitive defect configurations in carbons by the direct removal of specific nitrogen (N) doping sites, representing as one-to-one conversion; e.g., graphitic-N to divacancy (C585), pyridinic-N to separate pentagon (S-C5), and pyrrolic-N to adjacent pentagons (A-C5). Electrochemical measurements reveal that A-C5 defects prefer oxygen reduction reaction (ORR) catalysis, whereas C585 defects are more favorable toward hydrogen evolution reaction (HER). This work provides insights into the design of high-performance carbon-based catalysts based on the principles of defect formation.

Please refer to publisher version or contact your library.



Link to publisher version (DOI)