Shanghai Electrochemical Energy Devices Research Center, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China.
Chem Commun (Camb). 2018 May 24;54(43):5478-5481. doi: 10.1039/c8cc02552e.
A new electrolyte composed of 4 M LiFSI in dibutyl ether (DBE) is proposed for Li-S batteries. Dissolution of lithium polysulfides is definitely inhibited by DBE. More impressively, the electrolyte ensures a high Coulombic efficiency for Li deposition/stripping (∼99.2%) without dendrite growth. Enhanced cycling stability is demonstrated when coupled with a sulfurized poly(acrylonitrile) (S@pPAN) cathode. This electrolyte offers new insight into electrolyte design for high performance Li-S batteries.
一种由 4 M LiFSI 和二丁醚（DBE）组成的新型电解液被提议用于 Li-S 电池。DBE 肯定会抑制多硫化物的溶解。更令人印象深刻的是，该电解液确保了 Li 沉积/剥离的高库仑效率（约 99.2%），而没有枝晶生长。当与硫代聚丙烯腈（S@pPAN）阴极结合使用时，展示了增强的循环稳定性。这种电解液为高性能 Li-S 电池的电解液设计提供了新的思路。
