Protected Sulfur Cathode with Mixed Conductive Coating Laye for Lithium Sulfur Battery

Abstract

A mixed conductive coating layer composed of lithium ion conductive ceramicpowder , carbon and binder was introduced on the surface of a sulfur electrode.This coating layer is designed to suppress the migration oflithium polysulfidesfrom the sulfur electrode, and improve the cycling capacity of a lithium sulfurbattery. The protected sulfur cathode with a mixed conductive coating layerdelivered an initial specific capacity of 1236 mAh g- 1 at 0.5C and maintaineda capacity of 842 mAh g- 1 after 100 cycles. In particular, a soft package bat-tery with protected cathode exhibits improved cycling capacity and excellentrate performance.