▎ 摘　　要

NOVELTY - The utility model claims a graphene special diaphragm structure for high capacity lithium battery, comprising a battery box and a shell; the inner part of the battery box is slidingly connected with a shell; the inner part of the shell is provided with a positive electrode; a cathode and a diaphragm main body; and the diaphragm main body is between the positive electrode and the negative electrode; the middle of the diaphragm main body is graphene diaphragm; the upper and lower of the graphene diaphragm are fixedly connected with with a heat-resistant ceramic layer; the outer side of the heat-resistant ceramic layer is fixedly connected with with a reinforcing belt; the reinforcing belt is formed by interweaving two layers of hole-shaped nonwoven fabric the outer side of the reinforcing belt is fixedly connected with with a PP film; the diaphragm main body is composed of seven layers of graphene diaphragm, heat-resistant ceramic layer, reinforcing belt and pp film; it has a certain thickness; and the reinforcing belt can effectively protect the graphene diaphragm; the strength of the diaphragm and the safety of the lithium battery are increased.