Authors
Ziyang Lu, Bo Wang, Yongfeng Hu, Wei Liu, Yufeng Zhao, Ruoou Yang, Zhiping Li, Jun Luo, Bin Chi, Zheng Jiang, Minsi Li, Shichun Mu, Shijun Liao, Jiujun Zhang, Xueliang Sun
Publication date
2019/2/25
Journal
Angewandte Chemie
Volume
131
Issue
9
Pages
2648-2652
Description
A competitive complexation strategy has been developed to construct a novel electrocatalyst with Zn‐Co atomic pairs coordinated on N doped carbon support (Zn/CoN‐C). Such architecture offers enhanced binding ability of O2, significantly elongates the O−O length (from 1.23 Å to 1.42 Å), and thus facilitates the cleavage of O−O bond, showing a theoretical overpotential of 0.335 V during ORR process. As a result, the Zn/CoN‐C catalyst exhibits outstanding ORR performance in both alkaline and acid conditions with a half‐wave potential of 0.861 and 0.796 V respectively. The in situ XANES analysis suggests Co as the active center during the ORR. The assembled zinc–air battery with Zn/CoN‐C as cathode catalyst presents a maximum power density of 230 mW cm−2 along with excellent operation durability. The excellent catalytic activity in acid is also verified by H2/O2 fuel cell tests (peak power density …
Total citations
2019202020212022202320243410512113814383
Scholar articles
Z Lu, B Wang, Y Hu, W Liu, Y Zhao, R Yang, Z Li, J Luo… - Angewandte Chemie, 2019