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Title: Boosting electrocatalytic ammonia production through mimicking “π back-donation”
Authors: Lv, Chade
Zhong, Lixiang
Yao, Yao
Liu, Daobin
Kong, Yi
Jin, Xiaoli
Fang, Zhiwei
Xu, Wenjie
Yan, Chunshuang
Dinh, Khang Ngoc
Shao, Minhua
Song, Li
Chen, Gang
Li, Shuzhou
Yan, Qingyu
Yu, Guihua
Keywords: Engineering::Materials::Energy materials
Issue Date: 2020
Source: Lv, C., Zhong, L., Yao, Y., Liu, D., Kong, Y., Jin, X., ... Yu, G. (2020). Boosting electrocatalytic ammonia production through mimicking “π back-donation”. Chem, 6(10), 2690-2702. doi:10.1016/j.chempr.2020.07.006
Journal: Chem
Abstract: Electrocatalytic dinitrogen reduction reaction (N2RR) is an emerging route for ammonia synthesis at ambient conditions. Albeit the “π back-donation” process enables N2RR activity on transition metals with empty d-orbitals, given its dilemma in overcoming hydrogen evolution reaction (HER) competition, exploring p-block-element-based catalysts with relatively inferior HER activity is achievable for high selectivity. The challenge lies in designing rational structure to improve N2RR activity. Here, we synergistically integrate oxygen vacancy (VO) with hydroxyl on Bi4O5I2 (VO-Bi4O5I2-OH), which render this p-block-element-based material active to mimic “π back-donation” behavior because of sufficient vacant orbitals. In neutral media, the electrocatalytic N2RR performance of VO-Bi4O5I2-OH in terms of splendid faradic efficiency (32.4%) is superior to most of the prior reports using p-block-element-based catalysts. Our findings show a new strategy toward standout N2RR activity, which holds great potential in exploiting other p-block-element-based electrocatalysts.
ISSN: 2451-9294
DOI: 10.1016/j.chempr.2020.07.006
Rights: © 2020 Elsevier Inc. All rights reserved. This paper was published in Chem and is made available with permission of Elsevier Inc.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MSE Journal Articles

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