▎ 摘　　要

NOVELTY - Preparing a reduced graphene oxide/carbon material-coated lithium iron phosphate material involves preparing an aqueous solution of graphene oxide, add the lithium source, iron source and phosphate to the aqueous solution of graphene oxide, magnetically stirring for 30-45 minutes to fully dissolve the lithium source, iron source and phosphate, and ultrasonically dispersing for 30-60 minutes to form a first solution. The polyvinylpyrrolidone is dissolved in deionized water to form a transparent polyvinylpyrrolidone solution, and then dropped it into the above first solution to form second solution. The second solution is transferred to a Teflon (RTM: non ionic surfactant) reactor, heated the reaction in an oven, cooled to room temperature, after reaction is completed, suction filtered and repeatedly rinsed with deionized water and absolute ethanol for 3-5 times, and dried in vacuum oven to obtain graphene oxide/polyvinylpyrrolidone-coated lithium iron phosphate precursor. USE - Method for preparing reduced graphene oxide/carbon material-coated lithium iron phosphate material. ADVANTAGE - The method enables to prepare reduced graphene oxide/carbon material-coated lithium iron phosphate material which is helps to provide a channel for electron transfer and promote the transfer of electrons, effectively improves the conductivity and electrochemical performance of the material. DETAILED DESCRIPTION - Preparing a reduced graphene oxide/carbon material-coated lithium iron phosphate material involves preparing an aqueous solution of graphene oxide, add the lithium source, iron source and phosphate to the aqueous solution of graphene oxide, magnetically stirring for 30-45 minutes to fully dissolve the lithium source, iron source and phosphate, and ultrasonically dispersing for 30-60 minutes to form a first solution. The polyvinylpyrrolidone is dissolved in deionized water to form a transparent polyvinylpyrrolidone solution, and then dropped it into the above first solution to form second solution. The second solution is transferred to a Teflon (RTM: non ionic surfactant) reactor, heated the reaction in an oven, cooled to room temperature, after the reaction is completed, suction filtered and repeatedly rinsed with deionized water and absolute ethanol for 3-5 times, and dried in a vacuum oven to obtain a graphene oxide/polyvinylpyrrolidone-coated lithium iron phosphate precursor. The obtained graphene oxide/ polyvinylpyrrolidone-coated lithium iron phosphate precursor powder is heat-treated under an inert gas, until the reaction is completed, and the powder is ground through a 300 mesh sieve to obtain a reduced graphene oxide/carbon material package Covered lithium iron phosphate material.