Dry-method membrane preparation method based on binder fibrillation

The invention relates to a dry-method membrane preparation method based on binder fibrillation. The dry-method membrane preparation method comprises the following steps: (1) weighing an active material, a forming aid, a non-fibration and fibration binder, a pore-forming agent and a leveling agent according to a certain proportion; (2) mixing the active material with a non-fiberizing binder, and stirring and shearing at a high speed to complete the crushing treatment of the non-fiberizing binder; (3) mixing the active material with a forming aid, a pore forming agent and a fiberizing binder, and stirring and shearing at a high speed to complete fiberizing of the fiberizing binder; (4) adjusting a roller press, and rolling the mixed powder to obtain an electrode film; (5) heating and pressurizing the electrode film in a molding press to remove the pore-forming agent; and (6) uniformly smearing a proper amount of leveling agent on the surface of the electrode by using a spatula, and carrying out mold pressing ag