Study On A Novel S-Containing Composite Cathode Material For Lithium Battery

Due to its abounding resources and low toxicity and the highest charge capacity in all known cathode materials, elemental sulfur is a promising material used as cathode for the next generation high-performance lithium batteries. However, previously reported Li/S batteries encounter many serious problems, including very low active materials utilization and poor rechargeability, which inhibit rechargeable Li/S batteries being commercialized.A novel S-containing composite cathode material for lithium secondary battery was synthesized by heating polyacrylonitrile and elemental sulfur in certain conditions. The structures and components of the resulted composites were characterized by FTIR, XPS, XRD, SEM, element analysis and DSC/TG. The mechanisms of dehydrogenization and sulfuration reaction were deduced on the basis of the characterization results. The electrochemical performance of the S-containing composite...