| 摘要 |
PROBLEM TO BE SOLVED: To provide a production method of a negative electrode material for lithium ion secondary battery which can be densified while ensuring excellent electrolyte penetration.SOLUTION: The production method of a negative electrode material for lithium ion secondary battery includes a step for producing a carbon particle mixture by mixing at least two kinds of carbon particle groups having different average breaking strength, and a step for performing isotropic pressure treatment of the carbon particle mixture. |
