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Secondary battery electrode, and method for producing same

專利號(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
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 the method of producing an electrode for a secondary battery according to an exemplary embodiment of the present invention, the raw material may further include one or more additives selected from the group comprising a binder, a conductive material, a carbon precursor, and a pore forming agent.

In the method of producing an electrode for a secondary battery according to an exemplary embodiment of the present invention, the conductive material may include particles, fibers, nanostructures, or mixtures thereof of one or two or more materials selected from the group comprising conductive carbon, conductive polymers, and metals.

In the method of producing an electrode for a secondary battery according to an exemplary embodiment of the present invention, the conductive nanostructure may be one or two or more selected from the group comprising nanowires, nanotubes, nanoplates, nanoribbons, nanoparticles, and nanorods.

In the method of producing an electrode for a secondary battery according to an exemplary embodiment of the present invention, the carbon precursor may be one or more selected from the group comprising cokes, pitch, and thermocurable resins and thermoplastic resins.

In the method of producing an electrode for a secondary battery according to an exemplary embodiment of the present invention, the particulate particles may have a core-shell structure of a core of the electrode active material and a shell of a heteromaterial.

In the method of producing an electrode for a secondary battery according to an exemplary embodiment of the present invention, the heteromaterial may include a second electrode active material, a second electrode active material precursor, a conductive material, a binder, a carbon precursor, or a mixture thereof.

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