▎ 摘　　要

NOVELTY - Low-temperature long-cycle lithium iron phosphate battery comprises an anode sheet, a cathode sheet and an electrolyte. The anode sheet includes an anode current collector and an anode slurry coated on the anode current collector. The anode slurry includes lithium iron phosphate, porous graphitic carbon nitride nanospheres, graphene, and polymer solid electrolyte. The cathode sheet includes a cathode current collector and a cathode slurry coated on the cathode current collector. The cathode slurry includes a natural graphite, a conductive agent and a binder. The electrolyte includes an organic solvent, a lithium salt, a film-forming additive and a low-temperature additive. The organic solvent includes non-aqueous organic solvents that do not dissolve lithium salts and carboxylate solvents. USE - The Low-temperature long-cycle lithium iron phosphate battery is used for lithium-ion battery, and lithium polymer battery. ADVANTAGE - The low-temperature long-cycle lithium iron phosphate battery has excellent cycle performance and service life.