作者
Hongbin Yao, Guangyuan Zheng, Po-Chun Hsu, Desheng Kong, Judy J Cha, Weiyang Li, Zhi Wei Seh, Matthew T McDowell, Kai Yan, Zheng Liang, Vijay Kris Narasimhan, Yi Cui
发表日期
2014/5/27
期刊
Nature communications
卷号
5
期号
1
页码范围
3943
出版商
Nature Publishing Group UK
简介
Lithium–sulphur batteries are attractive owing to their high theoretical energy density and reasonable kinetics. Despite the success of trapping soluble polysulphides in a matrix with high surface area, spatial control of solid-state sulphur and lithium sulphide species deposition as a critical aspect has not been demonstrated. Herein, we show a clear visual evidence that these solid species deposit preferentially onto tin-doped indium oxide instead of carbon during electrochemical charge/discharge of soluble polysuphides. To incorporate this concept of spatial control into more practical battery electrodes, we further prepare carbon nanofibers with tin-doped indium oxide nanoparticles decorating the surface as hybrid three-dimensional electrodes to maximize the number of deposition sites. With 12.5 μl of 5 M Li2S8 as the catholyte and a rate of C/5, we can reach the theoretical limit of Li2S8 capacity ~\n1,470 mAh …
学术搜索中的文章
H Yao, G Zheng, PC Hsu, D Kong, JJ Cha, W Li… - Nature communications, 2014