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Secondary battery electrode, and method for producing same

專利號
US11996539B2
公開日期
2024-05-28
申請人
SK INNOVATION CO., LTD.(KR Seoul)
發(fā)明人
Jonghyuk Lee; Dockyoung Yoon; Heegyoung Kang
IPC分類
H01M4/04; H01M4/131; H01M4/133; H01M4/134; H01M4/1391; H01M4/1393; H01M4/1395; H01M4/36; H01M4/62; H01M4/66; H01M10/0525; H01M4/02
技術(shù)領(lǐng)域
active,electrode,material,film,bulk,battery,may,secondary,in,resin
地域: Seoul

摘要

A method for producing a secondary battery electrode, according to the present invention, comprises: a slicing step for producing an active material film by slicing an active material bulk; and a binding step for combining a current collector and the active material film. A method for producing a secondary battery electrode according to the present invention produces an active material film by slicing an active material bulk, which is a free-standing molded body or pellet, thus allowing binder-free active material film to be produced, and as no actual restrictions exist for the thickness of the active material film, thick active material film can be produced, and thus electrodes having high-loading and high composite density can be produced.

說明書

When one or more electrodes selected from a positive electrode and a negative electrode are a positive electrode and a negative electrode, the lithium secondary battery according to an exemplary embodiment of the present invention may include a positive electrode in which the active material film containing a positive electrode active material is adhered to at least one surface of the current collector by an adhesive; a negative electrode in which the active material film containing a negative electrode active material is adhered to at least one surface of the current collector by an adhesive; a separator interposed between the positive electrode and the negative electrode; and an electrolyte solution.

In the lithium secondary battery according to an exemplary embodiment of the present invention, the electrode active material, the active material film, or the current collector are similar or identical those described above in the production method of the electrode for a secondary battery, and the adhesive is similar or identical to the material of the adhesive layer described above in the production method of the electrode for a secondary battery. Accordingly, the lithium secondary battery according to the present invention includes all descriptions in the production method of the electrode for a secondary battery above.

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