Application of Organic Cathode Materials in Li-ion Batteries
Lithium-ion batteries are the first choice for new energy vehicle power batteries,and positive elec-trode materials,as an important part of lithium batteries,have a significant impact on battery performance and safety.At present,the commonly used cathode materials are oxide base active materials,such as lithium iron phosphate,lithium cobalt oxide and so on.Compared with inorganic cathode materials,organic cathode materials have the advantages of high theoretical specific capacity,environmental friendliness,flexible structural design,high safety,rich raw material sources,etc.,and are considered as one of the effective cathode mat erials.The organic cathode materials used in lithium-ion batteries mainly include carbonyl compounds,free radical poly-mers,conductive polymers and organic sulfides.Carbonyl compounds are considered as the most promising cathode materials for next-generation lithium-ion batteries due to their high theoretical specific capacity,rapid reaction kinetics,structural diversity,easy synthesis and availability of natural resources.The advantages of free radical polymers are reversible REDOX reactions,conductive polymers have good electronic conductivity and reversibility,organic sulfides have high specific capacity,and mineral sulfur sources are rich,cheap,easy to re-fine,respectively,are considered to be a class of important organic cathode materials for lithium batteries.The development of the next generation of organic cathode materials requires a variety of modification methods to develop high-performance composite cathode materials.
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