-
公开(公告)号：US20220059836A1
公开(公告)日：2022-02-24
申请号：US17417240
申请日：2019-11-25
IPC分类号： H01M4/525 , H01M4/36 , H01M10/0525 , H01M4/505
摘要： A positive electrode active material for a nonaqueous electrolyte secondary battery, the positive electrode active material comprising a Ni-containing lithium composite oxide a, b, wherein the Ni-containing lithium composite oxide a has an average primary particle size of 1 μm or more which is larger than the average primary particle size of the Ni-containing lithium composite oxide b, the Ni-containing lithium composite oxide a has an average secondary particle size of 2 to 6 μm, the Ni-containing lithium composite oxide b has an average primary particle size of 0.05 μm or more and an average secondary particle size of 10 to 20 μm, the Ni-containing lithium composite oxide a contains Mn and at least one of B and Al, the Ni-containing lithium composite oxide b contains Mn, and the ratio of the Ni-containing lithium composite oxide a to the Ni-containing lithium composite oxide b is 5:95 to 55:45.
-
公开(公告)号：US11942637B2
公开(公告)日：2024-03-26
申请号：US17417240
申请日：2019-11-25
IPC分类号： H01M4/525 , H01M4/02 , H01M4/36 , H01M4/505 , H01M10/0525
CPC分类号： H01M4/525 , H01M4/364 , H01M4/505 , H01M10/0525 , H01M2004/021 , H01M2004/028
摘要： A positive electrode active material for a nonaqueous electrolyte secondary battery, the positive electrode active material comprising a Ni-containing lithium composite oxide a, b, wherein the Ni-containing lithium composite oxide a has an average primary particle size of 1 μm or more which is larger than the average primary particle size of the Ni-containing lithium composite oxide b, the Ni-containing lithium composite oxide a has an average secondary particle size of 2 to 6 μm, the Ni-containing lithium composite oxide b has an average primary particle size of 0.05 μm or more and an average secondary particle size of 10 to 20 μm, the Ni-containing lithium composite oxide a contains Mn and at least one of B and Al, the Ni-containing lithium composite oxide b contains Mn, and the ratio of the Ni-containing lithium composite oxide a to the Ni-containing lithium composite oxide b is 5:95 to 55:45.
-
公开(公告)号：US20210265627A1
公开(公告)日：2021-08-26
申请号：US16973892
申请日：2019-03-15
发明人： Hidekazu Hiratsuka
摘要： A positive electrode active substance, wherein: the average primary particle diameter of an Ni-containing lithium complex oxide A is 0.5 μm or greater, and is greater than the average primary particle diameter (0.05 μm or greater) of an Ni-containing lithium complex oxide B; and the average secondary particle diameter of the Ni-containing lithium complex oxide A is 2-6 μm, and is less than the average secondary particle diameter (10-20 μm) of the Ni-containing lithium complex oxide B. The Ni-containing lithium complex oxides A, B contain 55 mol % or more of Ni relative to the total mol of metal elements excluding Li, have a crystallite diameter of 100-200 nm, and are such that the disorder of elemental Ni is 3% or less.
-
公开(公告)号：US12119489B2
公开(公告)日：2024-10-15
申请号：US16757100
申请日：2019-02-07
发明人： Hidekazu Hiratsuka
IPC分类号： H01M4/52 , H01M4/131 , H01M4/1391 , H01M4/485 , H01M4/505 , H01M4/525 , H01M10/0525 , H01M4/02
CPC分类号： H01M4/525 , H01M4/131 , H01M4/1391 , H01M4/485 , H01M4/505 , H01M10/0525 , H01M2004/028
摘要： A positive electrode active material for nonaqueous electrolyte secondary batteries includes a Ni-containing lithium transition metal oxide in the form of secondary particles formed by the aggregation of primary particles of the oxide, the proportion of Ni in the lithium transition metal oxide being not less than 80 mol % relative to the total number of moles of metal element(s) except Li, the average particle size of the primary particles being not less than 0.5 μm, the average particle size of the secondary particles being not less than 8 μm, the lithium transition metal oxide having a Ni disorder of not more than 3% and a crystallite size in the range of 100 to 200 nm according to X-ray diffractometry.
-
公开(公告)号：US11349121B2
公开(公告)日：2022-05-31
申请号：US16789662
申请日：2020-02-13
发明人： Hidekazu Hiratsuka
IPC分类号： H01M4/485 , H01M10/0525 , H01M4/02
摘要： This positive electrode active substance for a nonaqueous electrolyte secondary battery contains secondary particles that are aggregates of primary particles of a lithium transition metal oxide. The average particle diameter of the primary particles is within the range of 0.5 to 2 μm, the compressive breaking strength of the primary particles is 1,000 MPa or greater, and the crystallite diameter of the primary particles is within the range of 100 to 280 nm.
-
公开(公告)号：US20220149366A1
公开(公告)日：2022-05-12
申请号：US17430956
申请日：2019-11-29
摘要： This positive electrode active material for nonaqueous electrolyte secondary batteries includes a Ni-containing lithium composite oxide A and Ni-containing lithium composite oxide B. The Ni-containing lithium composite oxide A contains at least 55 mol % of Ni relative to the total number of mols of metal elements other than Li. The Ni-containing lithium composite oxide B contains Ti and Ni. The Ni content in the Ni-containing lithium composite oxide B is at least 55 mol % relative to the total number of mols of metal elements other than Ti and Li. The Ni-containing lithium composite oxide A and the Ni-containing lithium composite oxide B have a prescribed average first particle diameter and a prescribed average second particle diameter, respectively, and the ratio between the Ni-containing lithium composite oxide A and the Ni-containing lithium composite oxide B is, in mass ratio, 5:95-55:45.
-
公开(公告)号：US20200343549A1
公开(公告)日：2020-10-29
申请号：US16757100
申请日：2019-02-07
发明人： Hidekazu Hiratsuka
IPC分类号： H01M4/525 , H01M4/485 , H01M4/505 , H01M4/1391 , H01M4/131 , H01M10/0525
摘要： A positive electrode active material for nonaqueous electrolyte secondary batteries includes a Ni-containing lithium transition metal oxide in the form of secondary particles formed by the aggregation of primary particles of the oxide, the proportion of Ni in the lithium transition metal oxide being not less than 80 mol % relative to the total number of moles of metal element(s) except Li, the average particle size of the primary particles being not less than 0.5 μm, the average particle size of the secondary particles being not less than 8 μm, the lithium transition metal oxide having a Ni disorder of not more than 3% and a crystallite size in the range of 100 to 200 nm according to X-ray diffractometry.
-
公开(公告)号：US20200185712A1
公开(公告)日：2020-06-11
申请号：US16789662
申请日：2020-02-13
发明人： Hidekazu Hiratsuka
IPC分类号： H01M4/485 , H01M10/0525
摘要： This positive electrode active substance for a nonaqueous electrolyte secondary battery contains secondary particles that are aggregates of primary particles of a lithium transition metal oxide. The average particle diameter of the primary particles is within the range of 0.5 to 2 μm, the compressive breaking strength of the primary particles is 1,000 MPa or greater, and the crystallite diameter of the primary particles is within the range of 100 to 280 nm.
-
-
-
-
-
-
-
搜索结果
8 条记录 (耗时 0.021 秒)
