Trace ethanol as an efficient electrolyte additive to reduce the activation voltage of the Li2S cathode in lithium-ion–sulfur batteries

Abstract
Trace ethanol is applied as a cheap and effective electrolyte additive for reducing the activation voltage of Li2S cathodes in lithium-ion–sulfur batteries. Because Li2S can dissolve in ethanol, the solid–solid phase reaction in the first stage of the activation process converts into a liquid–solid phase reaction, which expedites the transport of electrons and lithium ions and reduces the activation voltage of Li2S. This strategy can be extended to other solvents that can dissolve Li2S.
Funding Information
  • National Natural Science Foundation of China (21606065, 21676067, 51372060)
  • Natural Science Foundation of Anhui Province (1708085QE98)
  • Fundamental Research Funds for the Central Universities (JZ2017HGTB0198, JZ2017YYPY0253, JZ2018HGBZ0138)
  • Chinese Academy of Sciences (KF2018003)

This publication has 31 references indexed in Scilit: