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公开(公告)号：US20250105244A1
公开(公告)日：2025-03-27
申请号：US18976873
申请日：2024-12-11
Applicant: LG Energy Solution, Ltd.
Inventor： Dong-Mok Shin , Sang-Min Keak , Dong-Oh Shin , Kwang-Ho Yoo
IPC: H01M4/04 , B60L50/64 , H01M4/62 , H01M10/0525
Abstract: Disclosed is a method for manufacturing a dry electrode. The method includes buffing the surface of a pre-electrode film formed in a sheet-like shape to remove the surface waviness in the manufacture of an electrode film, and then carrying out a calendering process, thereby ensuring the uniformity of the electrode film thickness and electrode active material density in the electrode film. In other words, it is possible to minimize a deviation in loading amount, porosity and thickness of the electrode depending on the location, and thus to provide improved overall electrochemical performance, including improved battery life characteristics.
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公开(公告)号：US20240014367A1
公开(公告)日：2024-01-11
申请号：US18033096
申请日：2021-10-21
Applicant: LG Energy Solution, Ltd.
Inventor： Nam-Jeong Lee , Sang-Min Kwak , Ki-Seok Lee , Koo-Seung Chung , Dong-Oh Shin , Kwang-Ho Yoo
CPC classification number: H01M4/04 , H01M4/625 , H01M4/623 , H01M4/0404 , H01M4/0435 , H01M2004/021
Abstract: A powder for an electrode for manufacturing a dry electrode for a secondary battery, including an active material, a conductive material and a binder, and showing a resistivity of 700 Ω·cm or less when being pressurized under a pressure of 50 MPa. The present disclosure also relates to a method for preparing the powder for an electrode, a method for manufacturing a dry electrode using the powder for an electrode, a dry electrode, a secondary battery including the dry electrode, an energy storage apparatus.
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3.发明公开公开(公告)号：US20240274823A1
公开(公告)日：2024-08-15
申请号：US18646276
申请日：2024-04-25
Applicant: LG Energy Solution, Ltd.
Inventor： Seong-Wook Kang , Jae-Sung Han , Dong-Mok Shin , Dong-Oh Shin , Kyung-Hwan Yoon , Kwang-Ho Yoo
IPC: H01M4/62 , H01M4/04 , H01M10/0525
CPC classification number: H01M4/623 , H01M4/0404 , H01M4/0416 , H01M4/0435 , H01M10/0525
Abstract: Disclosed is a method for manufacturing a dry electrode. The method allows determination of the micro-fibrilization degree of a binder resin from the crystallinity of the binder resin. Based on this, the processing conditions of mixed powder for electrode or an electrode film may be controlled. In this manner, it is possible to check and control the processing conditions easily and efficiently. In addition, the method for manufacturing a dry electrode includes a kneading step using a kneader under a low speed and high temperature and pulverization step. Therefore, there is no problem of blocking of a flow path caused by aggregation of the ingredients, which is favorable to mass production.
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公开(公告)号：US20230099713A1
公开(公告)日：2023-03-30
申请号：US17957167
申请日：2022-09-30
Applicant: LG Energy Solution, Ltd.
Inventor： Sang-Min Kwak , Koo-Seung Chung , Nam-Jeong Lee , Ho-Chan Lee , Dong-Oh Shin , Kwang-Ho Yoo
Abstract: Disclosed is a method for manufacturing a dry electrode. In the method, a conductive primer layer and an insulating protective layer are formed in a single step, or the insulating protective layer is formed first before an electrode active material layer is formed and after the conductive primer layer is formed. In this manner, there is no gap between the insulating protective layer and the conductive primer layer, thereby providing further improved insulation property. In addition, since the dry electrode is manufactured by laminating the current collector having the conductive primer layer and the insulating protective layer with the dry electrode film, an electrode having excellent adhesion and improved stability can be obtained advantageously.
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Patent Agency Ranking
公开(公告)号：US20250132343A1
公开(公告)日：2025-04-24
申请号：US18691768
申请日：2022-10-04
Applicant: LG Energy Solution, Ltd.
Inventor： Nam-Jeong Lee , Koo-Seung Chung , Sang-Min Kwak , Ji-Hyun Kim , Dong-Oh Shin , Ki-Seok Lee , Kwang-Ho Yoo
IPC: H01M4/62 , H01M4/04 , H01M10/052
Abstract: Disclosed are an electrode, a secondary battery comprising the same and an energy storage system, the electrode comprising: an electrode current collector; and an electrode layer on the electrode current collector, the electrode layer comprising an active material, a conductive material and a fluorine-containing binder, wherein the electrode layer has a quantified binder ratio (QBR) of 1.1 or less, and the QBR is defined as the following equation: QBR = Bs / Bf . , Bs denotes an average fluorine content in an electrode layer surface region within 15% of a total thickness of the electrode layer from an outermost surface of the electrode layer, and Bf denotes an average fluorine content in an electrode layer bottom region within 15% of the total thickness of the electrode layer from an interface between the electrode layer and the current collector.
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公开(公告)号：US20240266542A1
公开(公告)日：2024-08-08
申请号：US18690925
申请日：2023-04-20
Applicant: LG Energy Solution, Ltd.
Inventor： Seong-Wook Kang , Jae-Sung Han , Sang-Min Kwak , Kyung-Hwan Yoon , Dong-Oh Shin , Ki-Seok Lee , Kwang-Ho Yoo , Nam-Jeong Lee
CPC classification number: H01M4/623 , C08J3/226 , C08K3/041 , C08L27/16 , H01M4/0404 , H01M4/139 , H01M4/625 , C08J2327/16 , C08J2427/18 , C08K2201/001 , C08K2201/003 , C08K2201/006 , C08K2201/011 , C08L2205/025 , C08L2310/00 , H01M2004/021
Abstract: The present disclosure relates to a conductive material master batch for use in an electrode and an electrode obtained by using the same. The electrode obtained by using the conductive material master batch has an electrode resistance of 55 ohm·cm or less.
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公开(公告)号：US12002962B2
公开(公告)日：2024-06-04
申请号：US17881879
申请日：2022-08-05
Applicant: LG Energy Solution, Ltd.
Inventor： Seong-Wook Kang , Jae-Sung Han , Dong-Mok Shin , Dong-Oh Shin , Kyung-Hwan Yoon , Kwang-Ho Yoo
IPC: H01M4/62 , H01M4/04 , H01M10/0525
CPC classification number: H01M4/623 , H01M4/0404 , H01M4/0416 , H01M4/0435 , H01M10/0525
Abstract: Disclosed is a method for manufacturing a dry electrode. The method allows determination of the micro-fibrilization degree of a binder resin from the crystallinity of the binder resin. Based on this, the processing conditions of mixed powder for electrode or an electrode film may be controlled. In this manner, it is possible to check and control the processing conditions easily and efficiently. In addition, the method for manufacturing a dry electrode includes a kneading step using a kneader under a low speed and high temperature and pulverization step. Therefore, there is no problem of blocking of a flow path caused by aggregation of the ingredients, which is favorable to mass production.
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公开(公告)号：US20230114069A1
公开(公告)日：2023-04-13
申请号：US17957169
申请日：2022-09-30
Applicant: LG Energy Solution, Ltd.
Inventor： Dong-Mok Shin , Sang-Min Kwak , Dong-Oh Shin , Kwang-Ho Yoo
IPC: H01M4/36 , H01M4/04 , H01M4/62 , H01M10/0525
Abstract: Disclosed is a method for manufacturing a dry electrode. The method includes buffing the surface of a pre-electrode film formed in a sheet-like shape to remove the surface waviness in the manufacture of an electrode film, and then carrying out a calendering process, thereby ensuring the uniformity of the electrode film thickness and electrode active material density in the electrode film. In other words, it is possible to minimize a deviation in loading amount, porosity and thickness of the electrode depending on the location, and thus to provide improved overall electrochemical performance, including improved battery life characteristics.
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公开(公告)号：US20230042207A1
公开(公告)日：2023-02-09
申请号：US17881879
申请日：2022-08-05
Applicant: LG Energy Solution, Ltd.
Inventor： Seong-Wook Kang , Jae-Sung Han , Dong-Mok Shin , Dong-Oh Shin , Kyung-Hwan Yoon , Kwang-Ho Yoo
IPC: H01M4/62 , H01M4/04 , H01M10/0525
Abstract: Disclosed is a method for manufacturing a dry electrode. The method allows determination of the micro-fibrilization degree of a binder resin from the crystallinity of the binder resin. Based on this, the processing conditions of mixed powder for electrode or an electrode film may be controlled. In this manner, it is possible to check and control the processing conditions easily and efficiently. In addition, the method for manufacturing a dry electrode includes a kneading step using a kneader under a low speed and high temperature and pulverization step. Therefore, there is no problem of blocking of a flow path caused by aggregation of the ingredients, which is favorable to mass production.
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