▎ 摘　　要

NOVELTY - A graphene-loaded graphite carbon coated ferroferric oxide cathode material preparing method involves dissolving commercially available graphene oxide in ethanol, sonicating to graphene oxide dispersion a homogeneous suspension. Analytically pure soluble iron salts, urea, and surfactant are added to deionized water, stirred to fully dissolve the iron salt, and added to the suspension, oleic acid is added to obtain microemulsion, followed by performing microemulsion microwave reaction to give the product, mixing the product with urea or melamine, and subjecting to sealed pyrolysis. USE - Method for preparing graphene-loaded graphite carbon coated ferroferric oxide cathode material that is utilized in lithium ion battery. ADVANTAGE - The material exhibits stable structure to the battery, improves the cycle stability and can be prepared in simple and cost effective manner. DETAILED DESCRIPTION - A graphene-loaded graphite carbon coated ferroferric oxide cathode material preparing method involves dissolving commercially available graphene oxide in ethanol, sonicating to graphene oxide dispersion a homogeneous suspension. Analytically pure soluble iron salts, urea, and surfactant are added to deionized water, stirred to fully dissolve the iron salt, and added to the suspension, oleic acid is added to obtain microemulsion, where the volume ratio of oleic acid and water is (1-4): (1-4), the concentration of iron salt is 0.05-0.5 mol/L, concentration of urea is 0.05-0.5 mol/L, concentration of the surface active agent is 0.05-0.2 g/L, a concentration of graphene oxide is 0.5-2.5 mg/mL, followed by performing microemulsion microwave reaction to give the product, mixing the product with urea or melamine at mass ratio of 1: (1-5), grinding, subjecting to sealed pyrolysis to obtain finished product.