李亚飞教授课题组在NATURE COMMUNICATIONS发表研究论文

时间:2018-06-19 来源: 点击数:

Ultrathin bismuth nanosheets from in situ topotactic transformation for selective electrocatalytic CO2 reduction to formate

Han, N (Han, Na)[ 1 ] ; Wang, Y (Wang, Yu)[ 2 ] ; Yang, H (Yang, Hui)[ 1 ] ; Deng, J (Deng, Jun)[ 1 ] ; Wu, JH (Wu, Jinghua)[ 1 ] ; Li, YF (Li, Yafei)[ 2 ]*(李亚飞); Li, YG (Li, Yanguang)[ 1 ]*


[ 1 ] Soochow Univ, Jiangsu Key Lab Carbon Based Funct Mat & Devices, Inst Funct Nano & Soft Mat FUNSOM, Suzhou 215123, Peoples R China

[ 2 ] Nanjing Normal Univ, Coll Chem & Mat Sci, Nanjing 210023, Jiangsu, Peoples R China


NATURE COMMUNICATIONS,201803,9


Electrocatalytic carbon dioxide reduction to formate is desirable but challenging. Current attention is mostly focused on tin-based materials, which, unfortunately, often suffer from limited Faradaic efficiency. The potential of bismuth in carbon dioxide reduction has been suggested but remained understudied. Here, we report that ultrathin bismuth nanosheets are prepared from the in situ topotactic transformation of bismuth oxyiodide nanosheets. They process single crystallinity and enlarged surface areas. Such an advantageous nanostructure affords the material with excellent electrocatalytic performance for carbon dioxide reduction to formate. High selectivity (similar to 100%) and large current density are measured over a broad potential, as well as excellent durability for >10 h. Its selectivity for formate is also understood by density functional theory calculations. In addition, bismuth nanosheets were coupled with an iridium-based oxygen evolution electrocatalyst to achieve efficient full-cell electrolysis. When powered by two AA-size alkaline batteries, the full cell exhibits impressive Faradaic efficiency and electricity-to-formate conversion efficiency.

文章链接:

https://www.nature.com/articles/s41467-018-03712-z


Copyright © 2009-20010 南京师范大学 化学与材料科学学院. All rights reserved.