-
1.发明公开公开(公告)号：US20240186489A1
公开(公告)日：2024-06-06
申请号：US18343747
申请日：2023-06-29
发明人： Ji Yae DO , Min Suk KANG , Min Cheol BEAK , Kwang Ho LEE , Jae Young CHOI
CPC分类号： H01M4/366 , C01B25/45 , H01M4/133 , H01M4/136 , H01M4/5825 , H01M4/587 , H01M2004/028
摘要： A cathode active material for a lithium secondary battery according to an embodiment of the present disclosures a plurality of composite particles, each of which comprises a lithium metal phosphate particle, and a carbon coating formed on at least a portion of a surface of the lithium metal phosphate particle. A standard deviation of thickness values of the carbon coating measured by an X-ray photoelectron spectroscopy (XPS) for five different composite particles of the plurality of composite particles is 15 nm or less.
-
2.发明公开公开(公告)号：US20240213444A1
公开(公告)日：2024-06-27
申请号：US18465160
申请日：2023-09-12
发明人： Kwang Ho JEONG , Seung Deok SEO , Jae Young CHOI , Sung Do KIM , Jeong A KIM , Do Ae YU , Yong Seok LEE
IPC分类号： H01M4/134 , H01M4/04 , H01M4/133 , H01M4/1393 , H01M4/1395 , H01M4/36 , H01M4/38 , H01M4/587 , H01M4/62 , H01M10/42
CPC分类号： H01M4/134 , H01M4/0404 , H01M4/133 , H01M4/1393 , H01M4/1395 , H01M4/364 , H01M4/366 , H01M4/386 , H01M4/587 , H01M4/622 , H01M4/625 , H01M10/4235 , H01M2004/027
摘要： An anode for a lithium secondary battery includes an anode current collector, and an anode active material layer formed on at least one surface of the anode current collector. The anode active material layer includes an anode active material and an anode binder. The anode active material includes a plurality of composite particles, each of the composite particles include a silicon-based active material particle, and a solid electrolyte interphase (SEI) layer formed on at least a portion of a surface of the silicon-based active material particle. A relative standard deviation of thickness values of the SEI layer of the composite particles, which are measured by an X-ray photoelectron spectroscopy (XPS) from 9 different composite particles among the plurality of composite particles after repeating 100 cycles of charging and discharging is 20% or less.
-
公开(公告)号：US20230117843A1
公开(公告)日：2023-04-20
申请号：US17970271
申请日：2022-10-20
发明人： Sang Bok KIM , Sang Min PARK , Ji Hoon CHOI , Jung Moon SUNG , Sang Hye SHIN , Ji Sun LEE , Jae Young CHOI
IPC分类号： H01M4/485 , H01M4/36 , H01M4/04 , H01M10/052 , H01M4/58
摘要： Embodiments of the present invention provide a cathode active material for a lithium secondary battery. The cathode active material for a lithium secondary battery includes lithium-transition metal composite oxide particles, and a coating formed on each of the lithium-transition metal composite oxide particles. The coating includes a lithium-sulfur compound and a metal hydroxide. A residual lithium on a surface of the cathode active material is sufficiently removed to improve an ionic conductivity and low-resistance.
-
4.发明公开公开(公告)号：US20240234701A1
公开(公告)日：2024-07-11
申请号：US18403374
申请日：2024-01-03
发明人： Ju Ho CHUNG , Gwi Ok PARK , Jae Young CHOI
CPC分类号： H01M4/366 , C01B33/12 , H01M4/133 , H01M4/48 , H01M4/587 , H01M10/052 , C01P2002/52 , C01P2002/85 , C01P2004/80 , C01P2006/40 , H01M2004/027
摘要： Anode active materials and secondary batteries including the anode active materials are disclosed. An anode active material for a secondary battery based on an embodiment of the present disclosure includes a silicon oxide particle. The silicon oxide particle has a core portion including silicon oxide and a surface portion formed on the core portion. An oxidation number ratio defined as OS/OC of the silicon oxide particle is 1.7 or more, and less than 2.2. OS is an oxidation number of silicon oxide of the surface portion obtained by an X-ray photoelectron spectroscopy (XPS) analysis, and OC is an oxidation number of the silicon oxide of the core portion obtained by the XPS analysis.
-
5.发明公开公开(公告)号：US20240222617A1
公开(公告)日：2024-07-04
申请号：US18516957
申请日：2023-11-22
发明人： Young Uk PARK , Min Gu KANG , Seung Hyun KIM , Jeong Hoon JEUN , Jae Young CHOI , Je Nam CHOI
摘要： A cathode active material for a lithium secondary battery includes a lithium-transition metal oxide particle having a shape of a single particle and having a Mn oxidation number ratio of 0.23 or less. The Mn oxidation number ratio is calculated from a deconvolution of a Mn2p spectrum of the lithium-transition metal oxide particle by an X-ray photoelectron spectroscopy (XPS) analysis.
-
6.发明公开公开(公告)号：US20240021799A1
公开(公告)日：2024-01-18
申请号：US18301680
申请日：2023-04-17
发明人： Young Mo YANG , Joon Hyung MOON , Do Ae YU , Ju Ho CHUNG , Jae Young CHOI
CPC分类号： H01M4/366 , H01M4/485 , H01M4/583 , H01M2004/027
摘要： An anode active material for a secondary battery includes a plurality of composite particles. The composite particles include carbon-based particles containing pores therein. A silicon-containing coating layer is formed inside the pores or on a surface of the carbon-based particles. A surface oxide layer is formed on the silicon-containing coating layer. The surface oxide layer contains silicon oxide. A silicon oxidation number ratio of the composite particle is predefined.
-
-
-
-
-
搜索结果
6 条记录 (耗时 0.018 秒)
