1. Generating Defect‐Rich Bismuth for Enhancing the Rate of Nitrogen Electroreduction to Ammonia.
- Author
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Wang, Yue, Shi, Miao‐miao, Bao, Di, Meng, Fan‐lu, Zhang, Qi, Zhou, Yi‐tong, Liu, Kai‐hua, Zhang, Yan, Wang, Jia‐zhi, Chen, Zhi‐wen, Liu, Da‐peng, Jiang, Zheng, Luo, Mi, Gu, Lin, Zhang, Qing‐hua, Cao, Xing‐zhong, Yao, Yao, Shao, Min‐hua, Zhang, Yu, and Zhang, Xin‐Bo
- Subjects
ELECTROLYTIC reduction ,BISMUTH ,AQUEOUS solutions ,AMMONIA ,NITROGEN ,ADATOMS - Abstract
The electrochemical N2 fixation, which is far from practical application in aqueous solution under ambient conditions, is extremely challenging and requires a rational design of electrocatalytic centers. We observed that bismuth (Bi) might be a promising candidate for this task because of its weak binding with H adatoms, which increases the selectivity and production rate. Furthermore, we successfully synthesized defect‐rich Bi nanoplates as an efficient noble‐metal‐free N2 reduction electrocatalyst via a low‐temperature plasma bombardment approach. When exclusively using 1H NMR measurements with N2 gas as a quantitative testing method, the defect‐rich Bi(110) nanoplates achieved a 15NH3 production rate of 5.453 μg mgBi−1 h−1 and a Faradaic efficiency of 11.68 % at −0.6 V vs. RHE in aqueous solution at ambient conditions. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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