| 摘要 |
PROBLEM TO BE SOLVED: To provide a positive electrode mix for a lithium ion secondary battery which has a high energy density and is excellent in load characteristic and cycle characteristic, and a manufacturing method for it. SOLUTION: Positive electrode active material, conductive material and binding material, which compose a positive electrode mix for non-aqueous electrolyte secondary battery, are dispersed by using a mediumless type dispersing machine with a kneading part composed of a stator and a rotor. A particle size of the positive electrode active material in the positive electrode mix is made not less than 1 μm and not more than 20 μm by using the mediumless type dispersing machine, and also the positive electrode mix in which a particle diameter of carbon black and carbon graphite constituting the conductive material is formed not less than 20 nm and not more than 15 μm, is used. While the rotor 22 is held inside the stator 21 so as to be rotated at a high speed by a motor 23, the mediumless type dispersing machine has a designated space between teeth of the stator 21 and the rotor 22, and the mix 24 of a battery is inserted in the space and kneaded. |
