▎ 摘　　要

NOVELTY - Composite anode slurry comprises a first slurry, which includes 10-50 pts. wt. carbon-iodine compound, 40-80 pts. wt. lithium iron phosphate and 0.2-15 pts. wt. conductive carbon. The carbon-iodine compound is obtained by adsorbing iodine simple substances by active carbon. USE - Composite anode slurry for lithium-ion battery (claimed). ADVANTAGE - The composite anode slurry uses the carbon-iodine compound and the lithium iron phosphate as anode materials, and has both lithium iodide and lithium iron phosphate, so that the lithium-ion battery keeps the characteristic of long cycle life under the condition of low-temperature performance, and greatly improves gram-volume performance of the anode material, after the two are compounded. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: A method for preparing lithium-ion battery composite anode electrode slurry, which involves: adding a carbon-iodine compound, lithium iron phosphate, conductive carbon and the rest raw materials into a solvent, and fully mixing to obtain a first slurry in the lithium-ion battery composite anode slurry. The carbon-iodine compound, lithium iron phosphate, conductive carbon and the rest raw materials are added into a solvent, and fully mixed to obtain a first slurry in the lithium-ion battery composite anode slurry. The carbon-iodine compound, the water system dispersant, the conductive carbon and the water-based binder are added into deionized water, and fully mixed to obtain a second slurry of the lithium-ion battery composite anode slurry. A method for preparing lithium-ion battery anode pole piece, which involves coating first slurry of the lithium-ion battery composite anode pole slurry or the first slurry of the lithium-ion battery composite anode pole slurry on a current collector to obtain the lithium-ion battery anode pole piece through drying, rolling, slitting and cutting. The second slurry of the lithium-ion battery composite anode electrode slurry is coated on a current collector, dried, and further coated the first slurry of the lithium-ion battery composite anode electrode slurry on the dried second slurry, followed by rolling, slitting, and cutting into pieces to obtain the lithium-ion battery anode electrode piece. A lithium-ion battery, which comprises lithium-ion battery anode pole piece used as an anode pole piece. A method for preparing the lithium-ion battery, which involves obtaining dry electric core by assembling anode electrode plate, the negative electrode plate, the electrolyte and the isolating membrane and packaging by an aluminum plastic film to obtain lithium-ion battery by drying, performing liquid injection, standing, discharging and formation.