Progress in the preparation and electrochemical properties of transition metal sulfide Co9S8
Transition metal sulfide Co9S8 is a highly promising alternative energy storage material for graphite due to its high capacitance,good rate performance,long cycle life and low production cost.However,Co9S8 has problems such as large volume expansion and poor conductivity during the charging and discharging process,which leads to easy damage to the material structure and fast capacity decay during the charging and discharging process,and cannot fully meet the actual market demand.According to the latest research on different types of Co9S8 composite materials in various fields,this article reviewed the practical applications of Co9S8 materials.Through the induction and summary of existing research,the main modification methods for transition metal sulfide Co9S8 were briefly described,and the feasible suggestions were put forward for its future research focus.
transition metal sulfidesstructural modificationelement dopingelectrochemical performance