Published

Catalysis

Efficient industrial-current-density H2O2 production in neutral medium via external-shell boron regulation on single-atom VN4 sites

Published on - Chemical Engineering Journal

Authors: Dingding Li, Yanjun Guo, Yubo Sun, Lei Bai, Jiangwei Shi, Gang Chen, Jingbo Shi, Yijiang Liu, Chenghao Jin, Zongye Yue, Jinbo Bai, Kunyue Leng, Jie Xu, Yunteng Qu

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The unamiable electrolyte environment and insufficient kinetics of electrochemical two-electron oxygen reduction reaction (2e -ORR) hinders its application in producing H 2 O 2 . To address this issue, nitrogen-coordinated single atom vanadium with external shell boron regulation is designed for efficient H 2 O 2 production in neutral medium. The optimal catalyst VN 4 B/NC showcase a 2e -ORR pathway selectivity of 96.6% in 0.1M Na 2 SO 4 . And the high current density (1.1 A cm -2 ) and excellent production rate (16.23 mmol cm -1 h -1 ) in flow cell further confirm its superior activity. Moreover, VN 4 B/NC exhibits potential application in solid electrolyte reactor, which is demonstrated by the