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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

Thus, binder-free may be interpreted as organic binder-free, and a binder-free active material bulk (binder-free molded body or binder-free sintered body) may mean a molded body or a sintered body containing no organic binder. As a specific example, the binder-free sintered body may include a sintered body composed of an active material; a sintered body composed of an active material and residual carbon (residual carbon by organic binder decomposition or the like); a sintered body composed of an active material and a conductive material; a sintered body composed of an active material, a conductive material, and residual carbon; a sintered body composed of an active material and a carbon precursor-derived carbon; a sintered body composed of an active material, a carbon precursor-derived carbon, and residual carbon; a sintered body composed of an active material, a conductive material, and a carbon precursor-derived carbon; a sintered body composed of an active material, a conductive material, a carbon precursor-derived carbon, and residual carbon, and the like.

As described above, by the production-methodical configuration of the present invention, the active material film may be a binder-free film containing no organic binder. Without limitation to this, the active material film which is a binder-free film may be composed of an electrode active material, composed of an electrode active material and a conductive material, or composed of an electrode active material and carbon serving as a binder.

權(quán)利要求

1
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