▎ 摘　　要

NOVELTY - The method involves stirring main material, two conductive agents, positive electrode binder and dispersant evenly in the positive electrode solvent. The positive electrode slurry is evenly coated on both sides of aluminum foil, and placed in an oven to bake to obtain a positive electrode sheet. The main material, another conductive agent, thickener and negative electrode binder are mixed evenly, and distributed in the negative electrode solvent. The negative electrode slurry is evenly coated on both sides of copper foil, and placed in oven to obtain a negative electrode sheet. The positive and negative electrode sheets and separator are assembled into a battery cell by winding or stacking. The separator is placed in middle of positive electrode sheet and the negative electrode sheet. The battery cell is placed in the casing, and electrolyte solution is injected, and sealed and converted into volume to obtain a low cost, low internal resistance, high performance lithium-ion battery. USE - Preparation method of low-cost high-performance lithium ion battery used as secondary battery widely used in market. ADVANTAGE - The method provides low-cost high-performance lithium ion battery using dispersant. The method uses new dispersant in the anode homogenate, which effectively improves the solid content of the slurry, reduces the use of NMP, improves the coating efficiency, and reduces the energy consumption, so as to effectively reduce the manufacturing cost of the battery. The internal resistance is smaller, and the performance is more excellent.