Abstract
Rechargeable lithium‑sulfur (Li-S) batteries hold great potential for next-generation high-performance energy storage systems because of their high theoretical specific energy, low material cost, and environmental safety. One of the major obstacles for their commercialization is rapid capacity fading due to polysulfide dissolution and uncontrolled redeposition of active sulfur. Various porous carbon structures have been used to improve the performance of Li-S batteries, as polysulfides could be trapped inside the carbon matrix. However, polysulfides still diffuse out for a prolonged time if there is no effective capping layer surrounding the carbon/sulfur particles. Thus, various researchers have come up with innovative ideas to stop this diffusion of polysulfides from the cathode electrode. One way of stopping the diffusion is coating the carbon/sulfur particles with conductive polymers. It is believed that the conductive polymer-coating method represents an exciting direction for the enhancement of Li-S battery performance. Thus, this chapter presents some of the important applications of electroactive polymers in rechargeable batteries.
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