Bismuth with abundant defects for electrocatalytic CO reduction and Zn-CO batteries

To regulate the electronic structure of Bi sites and enhance their intrinsic activity, metal Bi with abundant defects was constructed. The optimized sample displayed a higher selectivity (93.9% at −0.9 V) and a larger current density (−10 mA cm −2 at −1.0 V) towards electrocatalytic CO 2 reduction t...

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Published in:Chemical communications (Cambridge, England) England), 2022-03, Vol.58 (22), p.3621-3624
Main Authors: Wang, Yuchao, Huang, Zisheng, Lei, Yongpeng, Wu, Jiao, Bai, Yu, Zhao, Xin, Liu, Mengjie, Zhan, Longsheng, Tang, Shuaihao, Zhang, Xiaobin, Luo, Fenghua, Xiong, Xiang
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Summary:To regulate the electronic structure of Bi sites and enhance their intrinsic activity, metal Bi with abundant defects was constructed. The optimized sample displayed a higher selectivity (93.9% at −0.9 V) and a larger current density (−10 mA cm −2 at −1.0 V) towards electrocatalytic CO 2 reduction to formate, which can be mainly attributed to abundant defect sites and the optimized electronic structure. The assembled Zn-CO 2 batteries displayed a power density of 1.16 mW cm −2 and a cycling stability up to 22 h. This work deepens the research of Bi-based catalysts towards CO 2 transformation and related energy devices. The abundant defects in bismuth boosted the formate selectivity of electrocatalytic CO 2 reduction.
ISSN:1359-7345
1364-548X
DOI:10.1039/d2cc00114d