| 摘要 |
A method for recovering valuable material from a positive electrode in a lithium-ion secondary battery that includes a collector comprising aluminum and includes valuable material comprising at least either cobalt or nickel, said method including: a heating step in which the positive electrode in the lithium-ion secondary battery is heated to 500-600°C, preferably 590-610°C; and a sieve screening step in which the positive electrode after the heating step is sieve-screened using a sieve having mesh openings of no more than 2.0 mm, and recovered material containing the valuable material and having a collector content of no more than 2 mass% is obtained. |
