▎ 摘　　要

NOVELTY - Reinforcing coating comprises lithiated graphene oxide and bonding agent. The element ratio oxygen/carbon ratio of oxygen to carbon measured by X-ray photoelectron spectroscopy of the lithiated graphene oxide is 0.06-0.30. The bonding agent includes polyvinylidene fluoride, polyvinyl chloride, carboxymethyl cellulose, styrene-butadiene rubber, and/or polystyrene. USE - The reinforcing coating is useful for lithium-ion battery diaphragm i.e. cathode of battery (all claimed). ADVANTAGE - The reinforced coating enhances the puncture strength of the diaphragm, improves the problem of generating gas in the charging and discharging process, and improves the safety of the battery.