Effect of soluble sulfur species on the electrochemical behavior of lithium–sulfur batteries with dual-phase electrolytes†
Abstract
Lithium polysulfides (Li2Sn, 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 Li2Sn shows higher electrochemical activity and faster reaction kinetics compared to that with S8, providing an attractive alternative for high energy density rechargeable flow batteries.