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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

In particular, as in an example shown in the lower part of FIG. 2, when the cutting direction (CD) of the active material bulk 200 is parallel to the pressed direction of the pressed particles, that is, in vertical direction to the pressed surface of the pressed particles, the thickness direction of the active material film 300 and the oriented direction of the active material particles (pressed particles) are substantially parallel to each other, and thus, electrolyte solution impregnation into a space between particles and diffusion of ions involved in charge/discharge such as lithium ions may be performed more smoothly.

權(quán)利要求

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