▎ 摘　　要

NOVELTY - Method for evaluating cycle life of lithium battery anode material involves preparing at least two anode materials to be evaluated, mixing each of the anode materials to be evaluated with the same conductive agent and binder in the same proportion to prepare anode slurry, coating anode slurry on the same anode current collector to form anode, assembling the anode made of anode materials to be evaluated with cathode and electrolyte to form battery cell, measuring the charging capacity (Qc), charging energy (Ec), discharging capacity (Qd) and discharging energy (Ed) of the charging and discharging cycles of each of the battery cells to the nth cycle at the same rate, obtaining the average charging voltage (Vc) and the average discharging voltage (Vd) of each of the cells, then obtaining the average voltage difference (DeltaV) between charging and discharging of each of the battery cells, comparing the average charge-discharge voltage difference (DeltaV) of each of the battery cells. USE - Method for evaluating cycle life of lithium battery anode material. ADVANTAGE - The method is easy, quick and economical, and can quickly evaluate and judge the cycle performance of lithium battery anode material with high accuracy. DETAILED DESCRIPTION - Method for evaluating cycle life of lithium battery anode material involves preparing at least two anode materials to be evaluated, mixing each of the anode materials to be evaluated with the same conductive agent and binder in the same proportion to prepare anode slurry, coating anode slurry on the same anode current collector to form anode, assembling the anode made of anode materials to be evaluated with cathode and electrolyte to form battery cell, measuring the charging capacity (Qc), charging energy (Ec), discharging capacity (Qd) and discharging energy (Ed) of the charging and discharging cycles of each of the battery cells to the nth cycle at the same rate, where n is 1-145, obtaining the average charging voltage (Vc) and the average discharging voltage (Vd) of each of the cells according to the following formula: Vc=Ec/Qc and Vd=Qd/Qc, then obtaining the average voltage difference (DeltaV) between charging and discharging of each of the battery cells, where DeltaV is Vc-Vd, and comparing the average charge-discharge voltage difference (DeltaV) of each of the battery cells. The battery cell with a smaller charge-discharge average voltage difference DeltaV has a longer cycle life of the anode material to be evaluated corresponding to the battery cell.