▎ 摘 要
NOVELTY - A lithium ion positive pole material comprises 91.0-94.2 %mass lithium iron phosphate, 2.8-5.5 %mass conductive agent, 2-2.5 %mass binder and N-methylpyrrolidone. Conductive agent is a mixture of conductive carbon black, conductive graphite, graphene and carbon nanotube. The binder is polyvinylidene fluoride. USE - Lithium ion positive pole material for lithium-ion battery. ADVANTAGE - The battery energy density and structural stability are improved. The agglomeration is prevented and product quality is improved. The mixing time and the amount of water for mixing process are reduced. The coating efficiency is improved. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of lithium ion positive pole material, which involves mixing N-methylpyrrolidone and polyvinylidene fluoride and stirring for 4 hours to obtain a mixture (A), mixing conductive agent with lithium iron phosphate powder in blender, to obtain a mixture (B), adding the mixture (B) with mixture 1/2 of the mixture (A), and stirring for 1 hour to obtain a mixture (C), adding mixture (B) to 1/4 of the mixture (C), and stirring for 1 hour to obtain a mixture (D), adding 1/4 of mixture (B) with mixture (D), and stirring for 5 hours, to obtain lithium ion positive pole material.