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公开(公告)号：US20190020024A1
公开(公告)日：2019-01-17
申请号：US16022762
申请日：2018-06-29
发明人： Lijuan WANG , Chaoyi ZHOU , Zhu'an YIN , Peng PENG , Daixiang YANG , Qianxin XIANG , Ming MEI , Lu LI
IPC分类号： H01M4/525 , H01M4/505 , H01M10/0525 , C01G53/00
CPC分类号： H01M4/525 , C01G53/50 , C01P2002/72 , C01P2004/03 , C01P2004/50 , C01P2006/12 , C01P2006/40 , H01M4/505 , H01M10/0525 , H01M2004/028
摘要： The present invention relates to a lithium ion cathode material and a lithium ion battery. The chemical formula of the cathode material is: LiaNixCoyMnzMbO2, wherein 1.0≤a≤1.2; 0.00≤b≤0.05; 0.30≤x≤0.60; 0.10≤y≤0.40; 0.15≤z≤0.30; x+y+z=1; M is one or two or more selected from the group consisting of Mg, Ti, Al, Zr, Y, W, Mn, Ba and rare earth elements; wherein the scanning electron microscope observation shows that, the cathode material consists of secondary particles agglomerated by 10 or less primary single crystal particles and secondary particles agglomerated by more than 10 primary single crystal particles, and wherein, the area percentage of the secondary particles agglomerated by 10 or less primary single crystal particles is greater than 80%, and the area percentage of the secondary particles agglomerated by more than 10 primary single crystal particles is less than or equal to 20%. The lithium battery prepared by the cathode material of the present invention has good cycling performance, the preparation method thereof is simple, and can be conveniently and massively produced.
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2.发明申请公开(公告)号：US20190020020A1
公开(公告)日：2019-01-17
申请号：US16022757
申请日：2018-06-29
发明人： Chaoyi ZHOU , Zhu'an YIN , Lijuan WANG , Daixiang YANG , Peng PENG , Qianxin XIANG , Ming MEI , Lu LI
IPC分类号： H01M4/485 , H01M4/505 , H01M4/525 , H01M10/0525
CPC分类号： H01M4/485 , C01G53/50 , C01P2002/60 , C01P2002/72 , C01P2004/03 , C01P2004/32 , C01P2004/62 , H01M4/131 , H01M4/505 , H01M4/525 , H01M10/0525 , H01M2004/028 , Y02E60/122 , Y02T10/7011
摘要： The present invention relates to a spherical or spherical-like cathode material for lithium-ion battery and a lithium-ion battery. The chemical formula of the cathode material is LiaNixCoyMnzMbO2, wherein: 1.02≤a≤1.20; 0.0≤b≤0.5; 0.30≤x≤0.60; 0.20≤y≤0.40; 0.05≤z≤0.50; x+y+z=1; M is one or two or more selected from the group consisting of Mg Ti Al Zr Y Co Mn Ni Ba and rare earth elements. Under the scanning electron microscope, the cathode material comprises primary particles with a morphology of spherical or spherical shape, and secondary particles agglomerated by the primary particles. The number percentage of the secondary particles agglomerated by the primary particles is less than or equal to 30%. The lithium battery prepared by the obtained cathode material has high specific capacity, high temperature stability, excellent safety and cycling performance at high temperature, and the preparation method thereof is simple and the cost is relatively low.
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3.发明公开公开(公告)号：US20230307623A1
公开(公告)日：2023-09-28
申请号：US18090080
申请日：2022-12-28
发明人： Chaoyi ZHOU , Ye YU , Jin HUANG , Lijuan WANG , Qianxin XIANG , Lu LI , Ming MEI
IPC分类号： H01M4/505 , H01M10/0525 , H01M4/131 , H01M4/525 , C01G53/00
CPC分类号： H01M4/505 , H01M10/0525 , H01M4/131 , H01M4/525 , C01G53/70 , C01G53/50 , H01M2004/028
摘要： A high-nickel cathode material for lithium ion batteries and a preparation method and application thereof. The high-nickel cathode material contains elements shown in and constituting the chemical formula 1 thereof Li1+aNibMncAdO2, where 0.01≤a≤0.24, 0.79
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4.发明申请公开(公告)号：US20200161633A1
公开(公告)日：2020-05-21
申请号：US16751337
申请日：2020-01-24
发明人： Chaoyi ZHOU , Lijuan WANG , Zhu'an YIN , Daixiang YANG , Qianxin XIANG , Ming MEI , Peng PENG
摘要： The present invention discloses a spherical or spherical-like lithium battery cathode material, a battery and preparation methods and applications thereof. The chemical formula of the cathode material is: LiaNixCoyMnzMbO2, wherein 1.0≤a≤1.2; 0.0
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