METHOD FOR PREPARING GRAPHENE-BASED LiFePO4/C COMPOSITE MATERIAL

摘要

A method for preparing a graphene-based LiFePO4/C composite material is disclosed to solve the problem that both the conductivity and the rate capability of the existing lithium iron phosphate positive electrode materials are poor. The keys of the method are: 1) preparing an iron salt solution having graphene oxide dissolved therein; 2) preparing an iron phosphate/graphene oxide precursor; 3) preparing the graphene-based LiFePO4/C composite materials. The method's beneficial effects lie in: the technological process is simple and easy to control, the obtained graphene-based LiFePO4/C composite material, having high specific capacity, good cycle performance and excellent rate capability, is especially suitable for power battery application field.