NOVELTY - A composition comprises a positive electrode active material, a conductive agent, and copolymer having structural units (I)-(III).    USE - Composition for preparing positive pole material that is utilized for manufacturing a cathode in lithium ion battery (all claimed).    ADVANTAGE - The composition has good suppleness, better performance, high strength, high absorbing capacity, low internal resistance, high volume energy density, and high temperature storage performance and circulation life.    DETAILED DESCRIPTION - A composition comprises a positive electrode active material, a conductive agent, and copolymer having structural units of formulae (I)-(III).    R1-R4 = H, F or -CF3;    R5-R7 = H or 1-5C alkyl;    R8 = 1-5C alkyl, 3-9C naphthenic base or 6-9C aryl (all optionally substituted);    R9-R11 = 1-5C alkyl; and    R12 = 1-5C alkyl.    INDEPENDENT CLAIMS are also included for the following:    (1) a lithium ion battery positive pole material comprises slurry, where the slurry comprises each component of the composition and water, and the solid content of the slurry material is 45-80 wt.%    (2) a method for preparing a slurry, which involves dispersing positive pole active substance and electric conductive agent in water to obtain first mixture, and mixing the first mixture with copolymer to obtain the slurry    (3) a lithium ion battery cathode comprises current collector and cathode material that coated and/or filled at the current collector, where the cathode material is the positive pole material    (4) a method for manufacturing lithium ion battery cathode, which involves coating the slurry on a current collector, carrying out baking, rolling under pressure and cutting to obtain the cathode    (5) a lithium ion battery comprising electrode core and non-aqueous electrolyte, where the electrode core and non-aqueous electrolyte are sealed in battery shell, the electrode core comprises anode, positive electrode and membrane, and the positive electrode is the cathode.