▎ 摘　　要

NOVELTY - The method involves adding and stirring lithium iron phosphate powder in pure water. Lithium iron phosphate saturated solution and dissolution of lithium iron phosphate solid are filtered. Graphene or graphene oxide water phase suspension liquid is prepared. Graphene or graphene oxide water phase suspension is performed through ultrasonic peeling off or dispersing for 0.5-3 hour. Lithium iron phosphate powder is added to the suspension liquid for graphene or graphene oxide absorbing to prepare a graphene modified lithium iron phosphate product. USE - Method for separating solid-liquid from graphene modified lithium iron phosphate. ADVANTAGE - The method enables reducing lithium iron phosphate modified cost, and providing better modified after electric property capacity and high rate property.