Patent ID: 9394585
Filing Date: 2016-07-19
CPC Classification: C22B,H01M,Y02E,Y02W

Claim Text:
1. A method for producing an active material comprising an alkali metal element by recovering the active material from a waste battery material, the method comprising: (1) an electrode material mixture recovery step of separating an electrode from the waste battery material of a secondary battery to recover an electrode material mixture including the active material, a conductive material, and a binder from the electrode; (2) an activation agent mixing step of mixing an activation agent including one or more alkali metal compounds with the recovered electrode material mixture, wherein an alkali metal element constituting the alkali metal compound included in the activation agent is the same as an alkali metal element constituting the active material; (3) an activation step of heating a mixture obtained in step (2) to a retention temperature not less than a melting start temperature of the activation agent to activate the active material included in the mixture; and (4) an active material recovery step of recovering the activated active material from a mixture obtained as a result of cooling without decomposing into a raw material compound of the active material including a constituent element thereof after the activation step.