▎ 摘　　要

NOVELTY - The utility model claims a graphite alkenyl lithium ion battery structure. the lithium ion battery structure comprises positive plate and negative plate set in superposition; the positive plate comprises a positive current collector and coated on the positive electrode current collector side of the positive electrode active material layer, an anode current collector is provided with an anode lug; the cathode sheet comprises a cathode current collector and coated on two sides of the cathode current collector of the cathode active material layer, the negative electrode active material is graphite alkenyl composite cathode current collector is equipped with a cathode ear, anode ear and cathode ear are staggered; membrane is set between the positive plate and the negative plate, a diaphragm is provided with multiple through holes; two sides of the membrane are provided with nanometre protective layer. This utility model adopts the graphite alkenyl composite material as the cathode active material, can greatly improve the load capacity of the battery. at the same time through nano-protecting layers are set on the two sides of the membrane can improve the diaphragm high temperature resistant performance, prevents membrane due to breaking or contraction of high temperature to cause battery internal short circuit caused by the potential safety hazard.