Method for recovering active metal of lithium secondary battery
AssigneeSK Innovation Co., Ltd.
InventorsHyeon Bae Ha, Ji Min Kim, Min Ji Sung, Sung Real Son, Hyeon Jung Kim
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Abstract
A method for recovering an active metal of a lithium secondary battery according to exemplary embodiments comprises preparing a preliminary cathode active material mixture including a lithium composite oxide and a binder, forming a cathode active material mixture by removing the binder from the preliminary cathode active material mixture through a heat treatment in a fluidized bed reactor, and recovering a lithium precursor from the cathode active material mixture. Accordingly, the active metal of the lithium secondary battery can be recovered with high purity and high efficiency.
Claims10
A method for recovering an active metal of a lithium secondary battery, comprising:
- preparing a preliminary cathode active material mixture including a lithium composite oxide and a binder;
- forming a cathode active material mixture by removing the binder from the preliminary cathode active material mixture through a heat treatment in a fluidized bed reactor;
- and
- recovering a lithium precursor from the cathode active material mixture,
- wherein forming the cathode active material mixture comprises injecting a fluidizing gas including only a non-reactive fluidizing gas into the fluidized bed reactor.
Dependencies are inferred from the claim text.