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1. 发明公开

EP3511946A1 COMPOSITE CONDUCTIVE MATERIAL HAVING EXCELLENT DISPERSIBILITY, SLURRY FOR FORMING LITHIUM SECONDARY BATTERY ELECTRODE USING SAME, AND LITHIUM SECONDARY BATTERY 审中-公开
公开(公告)号：EP3511946A1
公开(公告)日：2019-07-17
申请号：EP18813462.1
申请日：2018-06-08
申请人： LG Chem, Ltd.
发明人： KIM, Tea Gon , KIM, Je Young , KIM, Hak Yoon , SUNG, Ki Won , KIM, Ye Lin , BAEK, Joo Yul , YOO, Jung Keun , LIM, Jun Muk , KIM, Seul Ki
IPC分类号： H01B1/04 , H01M4/62 , H01M4/13 , H01M10/052 , D01F9/12
摘要： The present invention provides a method for producing a composite conductive material having excellent dispersibility, including: (S1) supporting a catalyst on carbon particles; (S2) heat treating the catalyst in a helium or hydrogen atmosphere to penetrate the carbon particles; and (S3) growing carbon nanofibers from a contact point of the carbon particles and the catalyst by supplying and heating a source gas containing a carbon source. The composite conductive material for a secondary battery according to the present invention has the effect of complementing the shortcomings of the highly dispersed carbon nanofibers of the highly conductive carbon nanofibers by synthesizing and growing the carbon nanofibers directly from spherical carbon particles having excellent dispersibility.

2. 发明授权

EP3331072B1 COMPOSITION FOR FORMING SECONDARY BATTERY CATHODE, AND SECONDARY BATTERY CATHODE AND SECONDARY BATTERY, WHICH ARE MANUFACTURED USING SAME 有权转让
公开(公告)号：EP3331072B1
公开(公告)日：2019-08-28
申请号：EP17770671.0
申请日：2017-03-24
申请人： LG Chem, Ltd.
发明人： AHN, Byoung Hoon , CHOY, Sang Hoon , YOO, Houng Sik , SUNG, Ki Won
IPC分类号： H01M4/62 , H01M4/36 , H01M4/13 , H01M10/0525 , H01M4/139 , H01M4/131 , H01M4/1391 , H01M4/52 , H01M4/02

3. 发明公开

EP3331072A1 COMPOSITION FOR FORMING SECONDARY BATTERY CATHODE, AND SECONDARY BATTERY CATHODE AND SECONDARY BATTERY, WHICH ARE MANUFACTURED USING SAME 有权转让
公开(公告)号：EP3331072A1
公开(公告)日：2018-06-06
申请号：EP17770671.0
申请日：2017-03-24
申请人： LG Chem, Ltd.
发明人： AHN, Byoung Hoon , CHOY, Sang Hoon , YOO, Houng Sik , SUNG, Ki Won
IPC分类号： H01M4/62 , H01M4/36 , H01M4/13 , H01M10/0525 , H01M4/139 , H01M4/131 , H01M4/1391 , H01M4/52 , H01M4/02
CPC分类号： H01M4/1391 , H01M4/13 , H01M4/131 , H01M4/139 , H01M4/366 , H01M4/505 , H01M4/525 , H01M4/622 , H01M4/625 , H01M10/052 , H01M10/0525 , H01M2004/021 , H01M2004/028
摘要： The present invention provides a composition for forming a positive electrode of a secondary battery which includes a positive electrode active material, a conductive material, and a dispersing agent, in which the conductive material includes a carbon-based material having a specific surface area of 130 m 2 /g or more and an oil absorption number of 220 ml/100g or more at 0.1 wt% to 2 wt% with respect to the total weight of the composition for forming a positive electrode, and the dispersing agent is introduced into the conductive material to form a conductive material-dispersing agent composite, and the conductive material-dispersing agent composite has a particle size distribution D 50 of 0.8 µm to 1.2 µm, a positive electrode for a secondary battery and a secondary battery, which are manufactured using the same.

4. 发明公开

EP3683880A1 ELECTRODE ASSEMBLY 审中-公开
公开(公告)号：EP3683880A1
公开(公告)日：2020-07-22
申请号：EP19862026.2
申请日：2019-07-22
申请人： LG CHEM, LTD.
发明人： KIM, Yong Jun , JEONG, Hee Seok , SUNG, Ki Won , LEE, Eun Ju
IPC分类号： H01M10/04 , H01M10/0583 , H01M2/02
摘要： The present invention provides an electrode assembly in which a negative electrode coated with a negative electrode active material on a surface of a negative electrode collector, a separator, and a positive electrode coated with a positive electrode active material on a surface of a positive electrode collector are repeatedly laminated, the electrode assembly comprising: monocells in which the positive electrode, the separator, the negative electrode, and the separator are laminated, wherein at least two or more monocells are laminated, wherein, in any one of the monocells, an expansion part extending lengthily to one side is formed on the separators, and the expansion part of the separator surrounds the monocells laminated to be disposed at the outermost layers to fix the laminated monocells.
Furthermore, the present invention provides an electrode assembly in which a negative electrode coated with a negative electrode active material on a surface of a negative electrode collector, a separator, and a positive electrode coated with a positive electrode active material on a surface of a positive electrode collector are repeatedly laminated, the electrode assembly comprising: monocells in which the positive electrode, the separator, the negative electrode, and the separator are sequentially laminated, wherein at least two or more monocells are laminated, wherein each of the two or more monocells of the monocells comprises a positive electrode extension part, in which a positive electrode collector extends lengthily to one side, and a negative electrode extension part, in which a negative electrode collector extends lengthily to the other side, and the positive electrode extension part and the negative electrode extension part are respectively bonded to a positive electrode extension part and a negative electrode extension part to fix the laminated monocells.

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