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公开(公告)号：EP3739674A1
公开(公告)日：2020-11-18
申请号：EP20174996.7
申请日：2020-05-15
发明人： LEE, Yong Seok , KIM, Jung Hwan , LEE, Myung Ro , BAE, Sang Won , BAE, Ji Hee
IPC分类号： H01M4/133 , H01M4/134 , H01M4/36 , H01M4/62 , H01M10/0525 , H01M4/38 , H01M4/48 , H01M4/587 , H01M4/02
摘要： According to the present inventive concept, a lithium secondary battery includes a cathode, a separator, and an anode including an anode current collector and an anode active material layer formed on the anode current collector and facing the cathode with the separator interposed therebetween. The anode active material layer includes a first anode active material layer formed on the anode current collector and including a first anode active material and a first anode binder containing a styrenebutadiene-based rubber (SBR) binder and a second anode active material layer formed on the first anode active material layer and including a second anode active material and a second anode binder containing a acryl-based binder. Each of the first anode active material and the second anode active material includes a silicon-based active material and a graphite-based material and contains 2 to 9.5 parts by weight of silicon with respect to the 100 part by weight of the graphite-based active material.
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2.发明公开
公开(公告)号：EP4350805A2
公开(公告)日：2024-04-10
申请号：EP23193527.1
申请日：2023-08-25
发明人： LEE, Yong Seok , JEUN, Jeong Hoon , KIM, Jae Ram , MIN, Jae Yun , EOM, Ki Joo , LEE, Myung Ro , JANG, Hyun Joong , CHOI, Je Nam
摘要： A cathode for a lithium secondary battery includes a cathode current collector, and a cathode active material layer formed on the cathode current collector. The cathode active material layer includes cathode active material particles. The cathode active material particles includes a lithium metal oxide particle containing nickel and having a mole fraction of cobalt of 0.02 or less among all elements except lithium and oxygen.
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3.发明公开
公开(公告)号：EP4369433A1
公开(公告)日：2024-05-15
申请号：EP23191885.5
申请日：2023-08-17
发明人： LEE, Yong Seok , JEUN, Jeong Hoon , KIM, Jae Ram , MIN, Jae Yun , EOM, Ki Joo , LEE, Myung Ro , JANG, Hyun Joong , CHOI, Je Nam
CPC分类号： H01M2004/02820130101 , H01M4/0404 , H01M4/043 , H01M4/131 , H01M4/525 , H01M4/505 , H01M4/621 , H01M4/624 , H01M10/0525
摘要： A cathode for a lithium secondary battery according to exemplary embodiments may include a cathode current collector and a cathode active material layer which is formed on the cathode current collector, includes cathode active material particles and satisfies a specific equation. The cathode active material particles may include lithium metal oxide particles which contain nickel and have a mole fraction of cobalt of 0.02 or less of all elements except for lithium and oxygen.
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4.发明公开
公开(公告)号：EP4057380A2
公开(公告)日：2022-09-14
申请号：EP22160615.5
申请日：2022-03-07
发明人： LEE, Yong Seok , KIM, Jae Ram , KIM, Jung Hwan , MIN, Jae Yun , BAE, Sang Won , BAE, Ji Hee , LEE, Myung Ro , LEE, Jae Yeong
IPC分类号： H01M4/13 , H01M4/62 , H01M10/052 , H01M4/02
摘要： Provided is a positive electrode for a lithium secondary battery including: a current collector; and a positive electrode active material layer including a positive electrode active material and carbon nanotubes, placed on the current collector, wherein the carbon nanotubes have I D /I G of 0.10 or less, the I D /I G being a ratio of a peak intensity of a D band divided by a peak intensity of a G band in a Raman spectrum.
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5.发明公开
公开(公告)号：EP4350805A3
公开(公告)日：2024-06-19
申请号：EP23193527.1
申请日：2023-08-25
发明人： LEE, Yong Seok , JEUN, Jeong Hoon , KIM, Jae Ram , MIN, Jae Yun , EOM, Ki Joo , LEE, Myung Ro , JANG, Hyun Joong , CHOI, Je Nam
CPC分类号： H01M2004/02120130101 , H01M2004/02820130101 , H01M4/131 , H01M4/364 , H01M4/525 , H01M4/625 , Y02E60/10 , H01M4/505 , H01M10/052
摘要： A cathode for a lithium secondary battery includes a cathode current collector, and a cathode active material layer formed on the cathode current collector. The cathode active material layer includes cathode active material particles. The cathode active material particles includes a lithium metal oxide particle containing nickel and having a mole fraction of cobalt of 0.02 or less among all elements except lithium and oxygen.
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6.发明公开
公开(公告)号：EP4057380A3
公开(公告)日：2022-10-19
申请号：EP22160615.5
申请日：2022-03-07
发明人： LEE, Yong Seok , KIM, Jae Ram , KIM, Jung Hwan , MIN, Jae Yun , BAE, Sang Won , BAE, Ji Hee , LEE, Myung Ro , LEE, Jae Yeong
IPC分类号： H01M4/13 , H01M4/62 , H01M10/052 , H01M4/02
摘要： Provided is a positive electrode for a lithium secondary battery including: a current collector; and a positive electrode active material layer including a positive electrode active material and carbon nanotubes, placed on the current collector, wherein the carbon nanotubes have I D /I G of 0.10 or less, the I D /I G being a ratio of a peak intensity of a D band divided by a peak intensity of a G band in a Raman spectrum.
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公开(公告)号：EP4064383A1
公开(公告)日：2022-09-28
申请号：EP22153327.6
申请日：2022-01-25
发明人： LEE, Yong Seok , MIN, Jae Yun , KIM, Jae Ram , KIM, Jung Hwan , BAE, Sang Won , BAE, Ji Hee , LEE, Myung Ro , LEE, Jae Yeong
摘要： An anode for a secondary battery includes an anode current collector, and an anode active material layer including a first anode active material layer and a second anode active material layer sequentially stacked from a surface of the anode current collector. Each of the first anode active material layer and the second anode active material layer comprises a carbon-based active material and a silicon-based active material as an anode active material, and a carbon nanotube as a conductive material. A content of the silicon-based active material in the second anode active material layer is greater than a content of the silicon-based active material in the first anode active material layer. A Raman R value of the carbon nanotube included in the second anode active material layer is smaller than a Raman R value of the carbon nanotube included in the first anode active material layer.
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