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1. 发明申请

US20210104338A1 Composite Conductive Material Having Excellent Dispersibility, Slurry for Forming Lithium Secondary Battery Electrode Using the Same, and Lithium Secondary Battery 有权
公开(公告)号：US20210104338A1
公开(公告)日：2021-04-08
申请号：US17116558
申请日：2020-12-09
申请人： LG Chem, Ltd.
发明人： Tea Gon Kim , Je Young Kim , Hak Yoon Kim , Ki Won Sung , Ye Lin Kim , Joo Yul Baek , Jung Keun Yoo , Jun Muk Lim , Seul Ki Kim
IPC分类号： H01B1/04 , C01B32/15 , B01J23/75 , B01J37/02 , B01J37/08 , H01M4/13 , H01M4/36 , H01M4/583 , H01M4/62 , H01M10/0525 , B82Y30/00
摘要： A method for producing a composite conductive material having excellent dispersibility is provided. The method includes supporting a catalyst on surfaces of carbon particles; heat treating the catalyst in a helium or hydrogen atmosphere such that the catalyst penetrate the surfaces of the carbon particles and are impregnated beneath the surfaces of the carbon particles at a contact point between the carbon particles and the impregnated catalyst; and heating the carbon particles having the impregnated catalyst disposed therein in the presence of a source gas to grow carbon nanofibers from the impregnated catalyst to form a composite conductive material, wherein the source gas contains a carbon source, and wherein the carbon nanofibers extend from the contact point to above the surfaces of the carbon particles.

2. 发明申请

US20180233734A1 COMPOSITION FOR FORMING POSITIVE ELECTRODE OF SECONDARY BATTERY, POSITIVE ELECTRODE FOR SECONDARY BATTERY AND SECONDARY BATTERY MANUFACTURED USING THE SAME 审中-公开
公开(公告)号：US20180233734A1
公开(公告)日：2018-08-16
申请号：US15751067
申请日：2017-03-24
申请人： LG Chem, Ltd.
发明人： Byoung Hoon Ahn , Sang Hoon Choy , Houng Sik Yoo , Ki Won Sung
IPC分类号： H01M4/1391 , H01M4/525 , H01M4/62 , H01M10/0525 , H01M4/36 , H01M4/131 , H01M4/505
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 m2/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 D50 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.

3. 发明授权

US11545725B2 Electrode assembly 有权
公开(公告)号：US11545725B2
公开(公告)日：2023-01-03
申请号：US16759895
申请日：2019-07-22
申请人： LG Chem, Ltd.
发明人： Yong Jun Kim , Hee Seok Jeong , Ki Won Sung , Eun Ju Lee
IPC分类号： H01M50/46 , H01M10/04 , H01M10/0583 , H01M10/0525
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.

4. 发明授权

US10902968B2 Composite conductive material having excellent dispersibility, slurry for forming lithium secondary battery electrode using the same, and lithium secondary battery 有权
公开(公告)号：US10902968B2
公开(公告)日：2021-01-26
申请号：US16332611
申请日：2018-06-08
申请人： LG Chem, Ltd.
发明人： Tea Gon Kim , Je Young Kim , Hak Yoon Kim , Ki Won Sung , Ye Lin Kim , Joo Yul Baek , Jung Keun Yoo , Jun Muk Lim , Seul Ki Kim
IPC分类号： H01B1/04 , H01M4/13 , H01M4/36 , H01M4/583 , B82Y30/00 , C01B32/15 , B01J23/75 , B01J37/02 , B01J37/08 , H01M4/62 , H01M10/0525
摘要： The present invention provides a composite conductive material having excellent dispersibility and a method for producing the same. In an embodiment, the method includes supporting a catalyst on surfaces of carbon particles; heat treating the catalyst in a helium or hydrogen atmosphere such that the catalyst penetrate the surfaces of the carbon particles and are impregnated beneath the surfaces of the carbon particles at a contact point between the carbon particles and the impregnated catalyst; and heating the carbon particles having the impregnated catalyst disposed therein in the presence of a source gas to grow carbon nanofibers from the impregnated catalyst to form a composite conductive material, wherein the source gas contains a carbon source, and wherein the carbon nanofibers extend from the contact point to above the surfaces of the carbon particles.

5. 发明授权

US10693124B2 Composition for forming positive electrode of secondary battery, positive electrode for secondary battery and secondary battery manufactured using the same 有权
公开(公告)号：US10693124B2
公开(公告)日：2020-06-23
申请号：US15751067
申请日：2017-03-24
申请人： LG Chem, Ltd.
发明人： Byoung Hoon Ahn , Sang Hoon Choy , Houng Sik Yoo , Ki Won Sung
IPC分类号： H01M4/62 , H01M4/1391 , H01M4/139 , H01M4/13 , H01M10/0525 , H01M4/36 , H01M4/505 , H01M4/525 , H01M4/131 , H01M4/02 , H01M10/052
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 m2/g or more and an oil absorption number of 220 ml/100 g 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 D50 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.

6. 发明申请

US20210265703A1 Electrode Assembly 有权
公开(公告)号：US20210265703A1
公开(公告)日：2021-08-26
申请号：US16759895
申请日：2019-07-22
申请人： LG Chem, Ltd.
发明人： Yong Jun Kim , Hee Seok Jeong , Ki Won Sung , Eun Ju Lee
IPC分类号： H01M50/46 , H01M10/04 , H01M10/0583
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.

7. 发明授权

US10741829B2 Composition for forming positive electrode of secondary battery, positive electrode for secondary battery and secondary battery manufactured using the same 有权
公开(公告)号：US10741829B2
公开(公告)日：2020-08-11
申请号：US15751067
申请日：2017-03-24
申请人： LG Chem, Ltd.
发明人： Byoung Hoon Ahn , Sang Hoon Choy , Houng Sik Yoo , Ki Won Sung
IPC分类号： H01M4/62 , H01M4/1391 , H01M4/139 , H01M4/13 , H01M10/0525 , H01M4/36 , H01M4/505 , H01M4/525 , H01M4/131 , H01M4/02 , H01M10/052
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 m2/g or more and an oil absorption number of 220 ml/100 g 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 D50 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.

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