| 摘要 |
PROBLEM TO BE SOLVED: To provide a recovery method of positive electrode active material particles capable of recovering the positive electrode active material particles themselves from an electrode plate, or a nonaqueous electrolyte secondary battery including the electrode plate.SOLUTION: A recovery method of positive electrode active material particles comprises: a shift step S3 of dissolving a binding agent into a first organic solvent, for a positive electrode active material layer 33, or the like, and shifting the positive electrode active material particles and conductive material particles into the first organic solvent; a first recovery step S4 of recovering the positive electrode active material particles from the first organic solvent; mixing steps S5, S7, S9 of admixing a second organic solvent to the positive electrode active material particles thus recovered; and second recovery steps S6, S8, S10 of recovering the positive electrode active material particles from the second organic solvent. The mixing steps S5, S7, S9 and the second recovery steps S6, S8, S10 are performed once or a plurality of times. |
