▎ 摘　　要

NOVELTY - Cathode of sheet comprises cathode current collector, where upper and lower two side cathode current collectors coated with a layer of material layer cathode active substance material cathode active substance, comprising cathode active substance material, conductive agent, thickening agent and agglomerant for the material layer cathode active substance. The cathode active substance ratio of the material, conductive agent, thickening agent and bonding agent is (96 + 1): (1 + 0.5): (1 + 0.5): (2 + 1); where the material cathode active substance graphite material, silicon-based material or mixture of graphite material and silicon-based material; where the conductive agent comprises at superconducting carbon black super P, carbon nanotube CNT and graphene graphene thickening agent, comprising sodium carboxymethyl cellulose and/or carboxymethyl cellulose lithium, bonding agent, comprising polyvinylidene fluoride, and/or polyacrylate. USE - Used as cathode of sheet. ADVANTAGE - The sheet is capable of forming ice crystal by freezing the cathode slurry at low temperature, then sublimating the solvent by low temperature vacuum drying, constructing ordered pole piece hole, finally, forming the final sheet by cathode drying, further assembling the sheet to cathode, to enhance the soaking rate of electrolyte in high coating amount cathode the sheet, obviously improving the cycle performance of the battery. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: A lithium iron phosphate battery; and A preparation method of the cathode. DESCRIPTION OF DRAWING(S) - The drawing shows a preparation method of a cathode method of a flow chart. (Drawing includes non-English language text).