▎ 摘　　要

NOVELTY - Preparing composite cathode material used for automobile battery involves adding graphene oxide with hydrochloric acid (HCl) solution, dispersing in deionized water and stirring. The is placed mixture in rust-inhibiting reactor. Potassium chlorate (KClO3) solution is added. Then hydrogen peroxide (H2O2) is added to complete the rust-inhibiting reaction to obtain crimping structure of nano-volume oxide of graphene. The graphene nano-oxide and stannic chloride (SnCl4) are uniformly mixed in water according to a certain mass ratio. USE - Method for preparing composite cathode material used for automobile battery (claimed). ADVANTAGE - The method enables to prepare composite cathode material which has excellent hydrogen storage performance, can be applied as the cathode of new energy automobile battery, which can greatly improve the use performance of the battery and prolong the service life of the battery. DETAILED DESCRIPTION - Preparing composite cathode material used for automobile battery involves adding graphene oxide with hydrochloric acid (HCl) solution, dispersing in deionized water and stirring. The is placed mixture in rust-inhibiting reactor. Potassium chlorate (KClO3) solution is added. Then hydrogen peroxide (H2O2) is added to complete the rust-inhibiting reaction to obtain crimping structure of nano-volume oxide of graphene. The graphene nano-oxide and stannic chloride (SnCl4) are uniformly mixed in water according to a certain mass ratio. Reducing agent is added to the reaction, filtered, washed and dried to obtain stannic oxide (SnO2)/graphene nanocomposite cathode material.