▎ 摘　　要

NOVELTY - High-stable lithium manganate battery, comprises a shell, an anode sheet, a diaphragm, a cathode sheet and an electrolyte. The diaphragm includes a base film provided with a coating. The coating material includes boron nitride nanosheet, graphene, metal oxide and metal fluoride. USE - High-stable lithium manganate battery. ADVANTAGE - The high-stability manganese acid lithium battery has reliable circulation stability and low production cost, and can be widely applied to the manganate battery lithium in order to achieve the above purpose. Compared with the traditional inorganic material coated membrane, the battery has the advantages of synergistic effect, which can inhibit manganese dissolution and migration, at the same time, it has good chemical stability and thermal conductivity, ensuring the battery can work for a long time working. Specifically, the metal fluoride and metal oxide can effectively inhibit the side reaction between the active substance and the electrolyte. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a preparation method of high-stable lithium manganate battery.