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Secondary battery electrode, and method for producing same

專(zhuān)利號(hào)
US11996539B2
公開(kāi)日期
2024-05-28
申請(qǐng)人
SK INNOVATION CO., LTD.(KR Seoul)
發(fā)明人
Jonghyuk Lee; Dockyoung Yoon; Heegyoung Kang
IPC分類(lèi)
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(shuō)明書(shū)

In an electrode for a secondary battery according to an exemplary embodiment, the active material film may have an interparticle neck of active material particles formed therein.

In still another general aspect, a secondary battery includes the electrode described above.

Advantageous Effects

In the method of producing a secondary battery a cording to an exemplary embodiment of the present invention, since the electrode for a secondary battery is produced by an extremely simple process of slicing-adhering an active material bulk, process building is easy and inexpensive, precise process control with a high degree is so unnecessary, and commerciality is excellent.

In a conventional production process of an electrode for a secondary battery, it was possible to produce an electrode which satisfies a desired degree (of smoothness, weight part, density uniformity, and the like) only when a series of processes such as final rolling and vacuum drying after performing production/inspection of a slurry and continuous coating on a thin conductive substrate and drying, are tightly managed and controlled.

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