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Secondary battery electrode, and method for producing same

專利號(hào)
US11996539B2
公開日期
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
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

When the adhesive layer is conductive, the adhesive layer may include one or more conductive components selected from the group comprising conductive resin, conductive particles, and conductive nanostructures. The conductive component may be mixed in a resin solution or a resin melt and applied with the resin.

As a specific example, when the adhesive layer is conductive, the adhesive layer may include one or more components selected from the group comprising conductive particles and conductive nanostructures, together with the non-conductive resin having curability described above.

As a specific example, when the adhesive layer is conductive, the adhesive layer may include a conductive resin. The conductive resin may have at least curability after removal by volatilization of a solvent (that is, curing by drying), but is not limited thereto, and may have heat or chemical curability by a functional group or have curability by solidification (phase transformation of melting-solidification), of course.

As a specific example, when the adhesive layer is conductive, the adhesive layer may include one or more components selected from the group comprising conductive particles and conductive nanostructures, together with the conductive resin.

That is, the adhesive layer may include a resin matrix, and the resin matrix may be a conductive adhesive layer which is a conductive resin having curability. Otherwise, the adhesive layer may include a resin matrix, and the resin matrix is a non-conductive resin, but the adhesive layer may be a conductive adhesive layer which is dispersed and positioned in the resin matrix and includes one or more dispersed phases selected from conductive particles and conductive nanostructures.

權(quán)利要求

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