Safe and Durable High-Temperature Lithium-Sulfur Batteries via Molecular Layer Deposited Coating.

Abstract

Lithium-sulfur (Li-S) battery is a promising high energy storage candidate in electric vehicles. However, the commonly employed ether based electrolyte does not enable to realize safe high-temperature Li-S batteries due to the low boiling and flash temperatures. Traditional carbonate based electrolyte obtains safe physical properties at high temperature but does not complete reversible electrochemical reaction for most Li-S batteries. Here we realize safe high temperature Li-S batteries on universal carbon-sulfur electrodes by molecular layer deposited (MLD) alucone coating. Sulfur cathodes with MLD coating complete the reversible electrochemical process in carbonate electrolyte and exhibit a safe and ultrastable cycle life at high temperature, which promise practicable Li-S batteries for electric vehicles and other large-scale energy storage systems.

DOI: 10.1021/acs.nanolett.6b00577

4 Figures and Tables

Cite this paper

@article{Li2016SafeAD, title={Safe and Durable High-Temperature Lithium-Sulfur Batteries via Molecular Layer Deposited Coating.}, author={Xia Li and Andrew Lushington and Qian Sun and Wei Xiao and Jian Liu and Biqiong Wang and Yifan Ye and Kaiqi Nie and Yongfeng Hu and Qunfeng Xiao and Ruying Li and Jinghua Guo and Tsun-Kong Sham and Xueliang Sun}, journal={Nano letters}, year={2016}, volume={16 6}, pages={3545-9} }