Electrospinning Machine | Multifunctional integrated separator based on electrospinning structure engineering for high-stability lithium sulfur batteries 2025-09-08
Lithium-sulfur batteries (Li-S) with elemental sulfur as the cathode and lithium as the anode have attracted widespread attention due to their high theoretical specific capacity (1675 mA·h g-1) and energy density (2600 Wh kg-1). However, the "shuttle effect" caused by the dissolution and migration of lithium polysulfides (LiPSs), intermediate products of the Li-S battery electrochemical reaction, the battery's self-discharge, and the irregular growth of lithium anode dendrites, all exacerbate the corrosion and passivation of the Li anode, the loss of active sulfur, and the decline in battery capacity. As an indispensable component of lithium-sulfur batteries, the separator is a hub for material transport between the sulfur cathode and the lithium anode, playing a core role in ion transport while avoiding short circuits. Functionalized separators are considered an efficient and convenient strategy to synergistically regulate sulfur electrochemical reaction activity and lithium anode dep