-
1.发明公开公开(公告)号：US20230223527A1
公开(公告)日：2023-07-13
申请号：US18179367
申请日：2023-03-07
发明人： Sang Han LEE , Min Gu KANG , Jeong Bae YOON , Yong Hyun CHO
IPC分类号： H01M4/505 , H01M10/0525 , H01M4/525 , H01M4/02
CPC分类号： H01M4/505 , H01M10/0525 , H01M4/525 , H01M2004/028 , H01M2004/021
摘要： A cathode active material for a lithium secondary battery includes a lithium-transition metal composite oxide particle having a lattice strain (η) of 0.18 or less, which is calculated by applying Williamson-Hall method defined by Equation 1 to XRD peaks measured through XRD analysis, and having an XRD peak intensity ratio of 8.9% or less, which is defined by Equation 2. By controlling the lattice strain and XRD peak intensity ratio of the lithium-transition metal composite oxide particle, a lithium secondary battery with improved life-span characteristics as well as output characteristics is provided.
-
公开(公告)号：US20210384505A1
公开(公告)日：2021-12-09
申请号：US17338317
申请日：2021-06-03
发明人： Sang Han LEE , Min Gu KANG , Jeong Bae YOON , Yong Hyun CHO
IPC分类号： H01M4/525 , H01M10/0525
摘要： A cathode active material for a lithium secondary battery including a lithium-transition metal composite oxide particle is provided. A crystal grain size of the lithium-transition metal composite oxide particle measured by an XRD analysis is 250 nm or more, and an XRD peak intensity ratio of the lithium-transition metal composite oxide particle is 9.8% or less. A lithium secondary battery including the lithium-transition metal composite oxide particle and having improved life-span and rate capability is provided.
-
3.发明公开公开(公告)号：US20230197934A1
公开(公告)日：2023-06-22
申请号：US18173789
申请日：2023-02-24
发明人： Sang Bok KIM , Sang Hye SHIN , Sang Min PARK , Tae Kyoung LEE , Myoung Lae KIM , Jeong Bae YOON , Jik Soo KIM , Ji Hoon CHOI
CPC分类号： H01M4/364 , H01M4/60 , H01M4/505 , H01M4/525 , H01M10/0525 , H01M2004/028
摘要： The cathode active material for a lithium secondary battery according to embodiments of the present invention includes a lithium-transition metal composite oxide particle including a plurality of primary particles, and the lithium-transition metal composite oxide particle includes a lithium-sulfur-containing portion formed between the primary particles. Thereby, it is possible to improve life-span properties and capacity properties by preventing the layer structure deformation of the primary particles and removing residual lithium.
-
公开(公告)号：US20230178728A1
公开(公告)日：2023-06-08
申请号：US18076152
申请日：2022-12-06
发明人： Mi Jung NOH , Jeong Bae YOON , Hee Jun KWEON , Je Nam CHOI
IPC分类号： H01M4/525 , H01M10/052
CPC分类号： H01M4/525 , H01M10/052 , H01M2004/021
摘要： A cathode active material precursor for a lithium secondary battery has a structure of a nickel composite hydroxide. An oxygen position in a Z-axis direction measured by a Rietveld method in a space group P-3m crystal structure based on an X-ray diffraction (XRD) analysis is 0.200 or more. A cathode active material and a lithium secondary battery having a stabilized crystal structure are provided using the cathode active material precursor.
-
5.发明公开公开(公告)号：US20230361291A1
公开(公告)日：2023-11-09
申请号：US18306241
申请日：2023-04-25
发明人： Ji Yae DO , Jeong Bae YOON , Min Suk KANG , Hee Jun KWEON , Sang Bok KIM , Yong Hyun CHO , Dong Wook HA
IPC分类号： H01M4/505 , H01M4/525 , H01M10/052 , H01M4/131 , C01G53/00
CPC分类号： H01M4/505 , H01M4/525 , H01M10/052 , H01M4/131 , C01G53/50 , H01M2004/028
摘要： A cathode active material for a lithium secondary battery according to an embodiment of the present invention includes a lithium-transition metal oxide particle. The lithium-transition metal oxide particle has a FWHM ratio measured by an in-situ X-ray Diffraction spectroscopy (XRD) and defined by Equation 1 of 400% or less. Life-span properties of a lithium secondary battery can be improved by preventing deformation of a lattice structure and/or a crystal structure in the lithium-transition metal composite oxide particles.
-
公开(公告)号：US20230178726A1
公开(公告)日：2023-06-08
申请号：US18074136
申请日：2022-12-02
发明人： Mi Jung NOH , Jeong Bae YOON , Je Nam CHOI , Sang Bok KIM , Jae Ho CHOI , Dong Wook HA
IPC分类号： H01M4/525 , H01M10/0525 , C01G53/00
CPC分类号： H01M4/525 , H01M10/0525 , C01G53/40 , C01G53/50 , H01M2004/028
摘要： A cathode active material precursor for a lithium secondary battery has a structure of a nickel composite hydroxide. A first peak intensity ratio represented by Equation 1 is 0.5 or more, and a second peak intensity ratio represented by Equation 2 is 0.7 or more. A cathode active material and a lithium secondary battery having a stabilized crystal structure are provided using the cathode active material precursor.
-
公开(公告)号：US20220367851A1
公开(公告)日：2022-11-17
申请号：US17512440
申请日：2021-10-27
发明人： Sang Bok KIM , Sang Hye SHIN , Sang Min PARK , Tae Kyoung LEE , Myoung Lae KIM , Jeong Bae YOON , Jik Soo KIM , Ji Hoon CHOI
IPC分类号： H01M4/36 , H01M4/505 , H01M4/525 , H01M4/60 , H01M10/0525
摘要： The cathode active material for a lithium secondary battery according to embodiments of the present invention includes a lithium-transition metal composite oxide particle including a plurality of primary particles, and the lithium-transition metal composite oxide particle includes a lithium-sulfur-containing portion formed between the primary particles. Thereby, it is possible to improve life-span properties and capacity properties by preventing the layer structure deformation of the primary particles and removing residual lithium.
-
8.发明申请公开(公告)号：US20220093962A1
公开(公告)日：2022-03-24
申请号：US17481535
申请日：2021-09-22
发明人： Sang Bok KIM , Jik Soo KIM , Jeong Bae YOON , Seung Ok LEE , Ji Hoon CHOI
IPC分类号： H01M10/0525 , H01M4/04 , H01M4/38
摘要： A method of manufacturing a cathode active material for a lithium secondary battery according to embodiments of the present invention includes performing a first heat treatment on a first mixture of a transition metal precursor and a lithium precursor at a first calcination temperature to obtain a preliminary lithium-transition metal composite oxide particle; and performing a second heat treatment on a second mixture obtained by adding the lithium precursor to the preliminary lithium-transition metal composite oxide particle at a second calcination temperature which is lower than the first calcination temperature to form a lithium-transition metal composite oxide particle.
-
公开(公告)号：US20210384502A1
公开(公告)日：2021-12-09
申请号：US17230586
申请日：2021-04-14
发明人： Sang Han LEE , Min Gu KANG , Jeong Bae YOON , Yong Hyun CHO
IPC分类号： H01M4/525 , H01M10/0525 , H01M4/505 , H01M4/62
摘要： A lithium secondary battery includes a cathode including a cathode active material including a lithium-transition metal composite oxide particle having a crystal grain size of greater than 500 nm measured through X-ray diffraction (XRD) analysis, and an anode disposed to face the cathode. The present invention provides a lithium secondary battery having improved life-span characteristics while suppressing gas generation due to crack of the particles by controlling the crystal grain size of the lithium-transition metal composite oxide particles.
-
-
-
-
-
-
-
-
搜索结果
9 条记录 (耗时 0.015 秒)
