| 摘要 |
Provided is a method for treating lithium batteries (100) having a positive electrode member (155) comprising an aluminum positive current collector (151) and a positive active material layer (152) containing a composite oxide of lithium and transition metal element positive active material (153) which is fixed to the positive current collector (151). The method includes an acid solution treatment process (step S4) wherein an acid solution, namely aqueous phosphoric acid solution, aqueous carbonic acid water or aqueous hydrogen sulfide, is brought into contact with the surface of the positive active material layer (152) and the positive current collector (151) which constitute the positive electrode member (155), and the positive active material layer (152) is separated from the positive current collector (151), and an oxalic acid treatment process (step S8) wherein the material for treatment (PM) containing metal components originating from the positive active material layer (152) is reacted with aqueous oxalic acid solution. |
