| abstract |
The invention discloses an iron phosphate@bowl-shaped hollow carbon sphere/graphene composite material, a preparation method and application thereof. The preparation method of the present invention is as follows: first prepare hollow carbon spheres by template method, grow iron phosphate in situ on its surface, then compound with graphene, and finally treat at a certain temperature to obtain iron phosphate@bowl-shaped hollow carbon of the present invention sphere/graphene composites. Since there are bowl-shaped hollow carbon spheres that play a supporting role and have good conductivity as the carrier inside, and the outside is coated with graphene, a high-conductivity material, it can greatly improve the electronic conductivity of iron phosphate, thus solving this problem very well. The common problem of low electronic conductivity of similar materials. The composite material prepared by the invention is applied to positive electrode materials of lithium-ion batteries, sodium-ion batteries and potassium-ion batteries, all of which have excellent electrochemical properties, provide a new technology for the development of high-performance positive electrode materials, and have good application prospects. |