Method for manufacturing lithium electrode
AssigneeLG Energy Solution, Ltd.
InventorsSuk Il Youn, Byoungkuk Son, Junghun Choi, Minchul Jang
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Abstract
A method for preparing a lithium electrode, and in particular, a lithium electrode having a thin and uniform thickness may be prepared by forming a protective layer capable of protecting lithium metal on a substrate first, depositing lithium metal on the protective layer, and then transferring the deposited lithium metal layer on a current collector, for instance a Cu current collector, when preparing a lithium electrode, and a lithium secondary battery using the lithium electrode prepared as above may have enhanced energy density.
Claims7
A method for preparing a lithium electrode comprising:
- (S1) forming a release layer on a first surface of a substrate and forming a release layer on a second surface of the substrate,
- wherein the release layer comprises one or more types selected from the group consisting of Si, melamine and fluorine;
- (S2) forming a protective layer on the release layer formed on the first surface of the substrate,
- wherein the protective layer is consisting of one or more types selected from the group consisting of polyvinylidene fluoride (PVDF), a polyvinylidene fluoride-hexafluoroethylene (PVDF-HFP) copolymer, a cycloolefin copolymer and styrene butadiene rubber-carboxymethyl cellulose (SBR-CMC);
- (S3) forming a lithium metal layer by depositing lithium metal on the protective layer;
- and
- (S4) winding a structure formed by subsequently laminating the substrate, the protective layer and the lithium metal layer and then transferring the structure on a current collector using a roll press for the lithium metal layer of the structure to be on the current collector.
Dependencies are inferred from the claim text.