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公开(公告)号：EP4207362A3
公开(公告)日：2023-07-19
申请号：EP22215571.5
申请日：2022-12-21
申请人： SK On Co., Ltd.
发明人： CHUNG, Ju Ho , JEUN, Jeong Hoon , PARK, Gwi Ok , PARK, Eun Jun , HA, Dong Wook
摘要： Provided is a negative electrode for a secondary battery satisfying the following Relation 1: V 1 − V 2 / V 1 * 100 ≥ 45 % wherein V 1 is a volume fraction (vol%) of silicon-based active material particles having a gray scale value of 30,000 or more in an XRM measurement on a negative electrode in a fully discharged state after formation, and V 2 is a volume fraction (vol%) of silicon-based active material particles having a gray scale value of 30,000 or more in an XRM measurement on a negative electrode in a fully charged state after 500 cycles of charging and discharging.
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公开(公告)号：EP4148823A1
公开(公告)日：2023-03-15
申请号：EP22194985.2
申请日：2022-09-09
申请人： SK On Co., Ltd.
发明人： CHUNG, Ju Ho , KIM, Jik Soo , PARK, Gwi Ok
IPC分类号： H01M4/133 , H01M4/134 , H01M4/36 , H01M10/0525 , H01M4/02
摘要： An anode active material for a lithium secondary battery includes a core portion including a solid electrolyte, and a shell portion encapsulating the core portion and including a silicon-based active material. A lithium secondary includes a case and an electrode assembly accommodated in the case. The electrode assembly includes an anode including the anode active material and a cathode facing the anode.
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公开(公告)号：EP4105175A1
公开(公告)日：2022-12-21
申请号：EP22178782.3
申请日：2022-06-13
申请人： SK On Co., Ltd.
发明人： MOON, Joon Hyung , PARK, Eun Jun , CHUNG, Ju Ho , PARK, Gwi Ok , YOO, Seok Keun
摘要： Provided is a negative electrode active material for a lithium secondary battery including: a silicon oxide (SiO x , 0
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14.发明公开
公开(公告)号：EP4376120A1
公开(公告)日：2024-05-29
申请号：EP23209710.5
申请日：2023-11-14
发明人： YANG, Young Mo , LA, Yun Ji , LEE, Kwang Ho , CHUNG, Ju Ho
IPC分类号： H01M4/134 , H01M4/1395 , H01M4/36 , H01M4/38 , H01M4/02
CPC分类号： H01M4/134 , H01M2004/02120130101 , H01M2004/02720130101 , H01M4/1395 , H01M4/362 , H01M4/364 , H01M4/381
摘要： An anode active material for a secondary battery according to an embodiment includes a plurality of a silicon-based active material particle being doped with a metal element and including pores. An average of porosity values measured for each of 10 different silicon-based active material particles among the plurality of the silicon-based active material particle is in a range from 0.2% to 9.0%.
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公开(公告)号：EP4207362A2
公开(公告)日：2023-07-05
申请号：EP22215571.5
申请日：2022-12-21
申请人： SK On Co., Ltd.
发明人： CHUNG, Ju Ho , JEUN, Jeong Hoon , PARK, Gwi Ok , PARK, Eun Jun , HA, Dong Wook
摘要： Provided is a negative electrode for a secondary battery satisfying the following Relation 1: V 1 − V 2 / V 1 * 100 ≥ 45 % wherein V 1 is a volume fraction (vol%) of silicon-based active material particles having a gray scale value of 30,000 or more in an XRM measurement on a negative electrode in a fully discharged state after formation, and V 2 is a volume fraction (vol%) of silicon-based active material particles having a gray scale value of 30,000 or more in an XRM measurement on a negative electrode in a fully charged state after 500 cycles of charging and discharging.
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公开(公告)号：EP4195328A1
公开(公告)日：2023-06-14
申请号：EP22210757.5
申请日：2022-12-01
发明人： SON, Jun Soo , PARK, Gwi Ok , YOO, Seok Keun , SEON, Min Kyung , JEONG, Ji Sang , CHUNG, Ju Ho
摘要： Provided is a novel binder for a secondary battery including a copolymer for a binder for a secondary battery containing specific repeating units. A negative electrode manufactured by mixing the binder with a negative electrode active material and a secondary battery including the negative electrode have excellent mechanical properties and an improved binding force, thereby effectively suppressing exfoliation and desorption of the negative electrode and expansion of the negative electrode even when a silicon-based negative electrode active material is used, and providing a negative electrode for a secondary battery having improved charge/discharge cycle characteristics and battery performance, and a secondary battery including the same.
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公开(公告)号：EP4195327A1
公开(公告)日：2023-06-14
申请号：EP22210747.6
申请日：2022-12-01
发明人： LEE, Dong Gun , PARK, Gwi Ok , YOO, Seok Keun , SEON, Min Kyung , SON, Jun Soo , CHUNG, Ju Ho
摘要： Provided are a novel binder for a secondary battery including a copolymer containing specific repeating units, and a binder composition for a secondary battery including the binder for a secondary battery and a compound containing an amine group and a hydroxyl group. When the binder for a secondary battery or the binder composition for a secondary battery is applied to a negative electrode and a secondary battery, expansion of the negative electrode is effectively suppressed, and the charge/discharge cycle characteristics and the performance of the secondary battery are significantly improved. Furthermore, the binder for a secondary battery has improved coatability and adhesion to effectively suppress the exfoliation and desorption of the negative electrode, thereby improving the performance of the secondary battery.
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公开(公告)号：EP4451381A1
公开(公告)日：2024-10-23
申请号：EP24160386.9
申请日：2024-02-28
申请人： SK On Co., Ltd.
发明人： LEE, Yong Seok , KIM, Sung Do , KIM, Jeong A , MOON, Joon Hyung , SEO, Seung Deok , YANG, Young Mo , JEONG, Kwang Ho , CHUNG, Ju Ho
摘要： An anode for a lithium secondary battery includes an anode current collector, a second anode active material layer disposed on the anode current collector and including a second anode active material that includes a graphite-based active material and composite particles, and a first anode active material layer disposed between the anode current collector and the second anode active material layer and including a first anode active material that includes a graphite-based active material and does not include the composite particles. Each of the composite particles includes a carbon-based particle including pores, a siliconcontaining coating layer disposed on an inside of the pores of the carbon-based particle or on a surface of the carbon-based particle, and a surface oxide layer disposed on the siliconcontaining coating layer and including a silicon oxide.
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19.发明公开
公开(公告)号：EP4450460A1
公开(公告)日：2024-10-23
申请号：EP24158567.8
申请日：2024-02-20
申请人： SK On Co., Ltd.
发明人： KIM, Nak Won , MOON, Joon Hyung , PARK, Eun Jun , CHUNG, Ju Ho
IPC分类号： C01B33/32
摘要： An anode active material for a secondary battery according to an embodiment includes comprising a lithium-silicon oxide particle that contains Li 2 Si 2 O 5 and has a phase fraction ratio of 1.0 or less. A content of lithium elements on a surface of the lithium-silicon oxide particle measured through an X-ray photoelectron spectroscopy (XPS) analysis based on the total number of atoms on the surface of the lithium-silicon oxide particle measured through the XPS analysis is 10 atomic% or less.
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公开(公告)号：EP4250433A1
公开(公告)日：2023-09-27
申请号：EP23162768.8
申请日：2023-03-20
申请人： SK On Co., Ltd.
发明人： MOON, Joon Hyung , PARK, Gwi Ok , CHUNG, Ju Ho
IPC分类号： H01M10/42 , H01M10/0525 , C01B39/00 , C08K3/016 , C09K21/00
摘要： The present disclosure provides a core-shell particle including a core including a porous substrate and a flame retardant, and a shell including a thermoplastic polymer and covering the core, and a secondary battery, a module, and a device including the same.
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