Journal of the American Chemical Society
Journal of the American Chemical Society
5 years ago

Ammonia Electrosynthesis with High Selectivity under Ambient Conditions via a Li+ Incorporation Strategy

Ammonia Electrosynthesis with High Selectivity under Ambient Conditions via a Li+ Incorporation Strategy
Liang-Xin Ding, Xingye Zeng, Xinrui Cao, Gao-Feng Chen, Min Zhu, Shunqing Wu, Haihui Wang
We report the discovery of a dramatically enhanced N2 electroreduction reaction (NRR) selectivity under ambient conditions via the Li+ incorporation into poly(N-ethyl-benzene-1,2,4,5-tetracarboxylic diimide) (PEBCD) as a catalyst. The detailed electrochemical evaluation and density functional theory calculations showed that Li+ association with the O atoms in the PEBCD matrix can retard the HER process and can facilitate the adsorption of N2 to afford a high potential scope for the NRR process to proceed in the “[O—Li+]·N2—Hx” alternating hydrogenation mode. This atomic-scale incorporation strategy provides new insight into the rational design of NRR catalysts with higher selectivity.

Publisher URL: http://dx.doi.org/10.1021/jacs.7b04393

DOI: 10.1021/jacs.7b04393

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