Effect of soluble sulfur species on the electrochemical behavior of lithium–sulfur batteries with dual-phase electrolytes

Abstract

Lithium polysulfides (Li₂S_n, 2 < n ≤ 8) are investigated as a catholyte for lithium–sulfur (Li–S) batteries with dual-phase electrolytes. The combined electrochemical and morphological investigation reveals that the cell with Li₂S_n shows higher electrochemical activity and faster reaction kinetics compared to that with S₈, providing an attractive alternative for high energy density rechargeable flow batteries.