▎ 摘　　要

NOVELTY - Cathode material composition comprises lithium carbon material, conductive agent, and binder i.e. alkene polymer material (I) and (II) having molecular weight of 104-106. USE - The cathode material composition is useful in slurry for preparing lithium carbon material cathode for lithium ion battery (all claimed). ADVANTAGE - The composition: contains binder with side chain polar group, and thus the binder forms hydrogen bonds with hydrogen on the active material and/or the current collector, which ensures enhanced binding and tighter contact between the coating and the current collector to decay the battery capacity slowly and increase the battery cycle life. DETAILED DESCRIPTION - Cathode material composition comprises lithium carbon material, conductive agent and binder, where the binder is alkene polymer material of formulae (I) and (II) having molecular weight of 104-106. X% = mass fraction of the X structural unit i.e. 0-35%; Y% = mass fraction of the Y structural unit i.e. 0-35%; Z% = mass fraction of the Z structural unit i.e. 0-33%; X%+Y%+Z% = 100%; 0less than or equal toZ%less than or equal to33%0less than or equal toX%less than or equal to35%0less than or equal toY%less than or equal to35% X%+Y% = greater than or equal to Z%; X'% = mass fraction of X' structural unit i.e. 0-40%; Y'% = mass fraction of Y' structural unit i.e. 0-40%; Z'% = mass fraction of Z' structural unit i.e. 0-30%; L'% = mass fraction of L' structural unit i.e. 0-5%; X'%+Y'%+Z '%+L'% = 100%; X'%+Y'% = greater than or equal to Z '%; R0 = H, hydrocarbyl or hydroxy; and R1-R10 = H or hydrocarbyl; Provided that: each structural unit is represented by brackets can be arranged arbitrarily or orderly. INDEPENDENT CLAIMS are also included for: (1) slurry comprising the cathode material composition and solvent, where the solvent is non-polar or weakly polar solvent, and the solid content of the slurry is 10-40 wt.%; (2) lithium carbon material cathode comprising current collector and a coating on the surface of the current collector, where the coating is formed by coating and drying the slurry; and (3) lithium ion battery comprising the lithium carbon material cathode.