过电位
材料科学
格式化
硫化物
密度泛函理论
无机化学
锡
法拉第效率
碳纳米管
碳纤维
催化作用
化学工程
电化学
物理化学
纳米技术
电极
计算化学
化学
有机化学
复合材料
冶金
工程类
复合数
作者
Zhipeng Chen,Xinxin Zhang,Mingyang Jiao,Kaiwen Mou,Xiangping Zhang,Licheng Liu
标识
DOI:10.1002/aenm.201903664
摘要
Abstract Engineering electronic structure to enhance the binding energies of reaction intermediates in order to achieve a high partial current density can lead to increased yield of target products. Herein, amino‐functionalized carbon is used to regulate the electronic structure of tin‐based catalysts to enhance activity of CO 2 electroreduction. The hollow nanotubes composed of SnS (stannous sulfide) nanosheets are modified with amino‐functionalized carbon layers, achieving a highest formate Faraday efficiency of 92.6% and a remarkable formate partial current density of 41.1 mA cm −2 (a total current density of 52.1 mA cm −2 ) at a moderate overpotential of 0.9 V versus reversible hydrogen electrode, as well as a good stability. Density functional theory calculations demonstrate that the superior activity is attributed to the synergistic effect among SnS and Aminated‐C in increasing the adsorption energies of the key intermediates and accelerating the charge transfer rate.
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