Lithium ion battery cathode material precursor, lithium ion battery cathode material, preparations methods of lithium ion battery cathode material precursor and lithium ion battery cathode material, and lithium ion battery
A technology for lithium-ion batteries and positive electrode materials, applied in battery electrodes, chemical instruments and methods, positive electrodes, etc., to achieve high-capacity characteristics and improved rate performance
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment approach
[0037] According to a preferred embodiment of the present invention, in the structural formula of the cathode material precursor, 0.7≤x1<1, 0.7≤x2<1, 0
[0038] In the present invention, D and G belong to the doping elements in the positive electrode material precursor, wherein the element D is selected from Mo, Ti, Y, W, Nb, Cr, Sm, V, La, Ca, Hf and Zr At least one of the element G is selected from at least one of Mo, Zn, Ti, Y, W, Nb, Cr, Sm, Al, V, La, Ca, Fe, Hf, Zr, Mg and B.
[0039] Element D and element G may be the same or different elements. Preferably, the types of element D and element G are different.
[0040] In the pr...
Embodiment 1
[0100] (1) Lithium-ion battery cathode material precursor T1
[0101] The structural formula of the cathode material precursor T1 for lithium-ion batteries is:
[0102] 0.40[(Ni 0.9 co 0.05 mn 0.04 Nb 0.01 )(OH) 2 ]·0.60[(Ni 0.8 co 0.05 mn 0.14 Zr 0.01 )(OH) 2 ],
[0103] The average molar ratio of metal ions in the inner core is Ni: Co: Mn: Nb = 0.90: 0.05: 0.04: 0.01, wherein the content of the doping element Nb decreases continuously along the direction from the core to the surface of the core, and the change rule is 0.02-0; at the same time The content of Mn element increases continuously along the direction from the core to the surface of the core, and the change rule is 0.03-0.05; and the total amount of doping elements Nb and Mn is kept at 0.05 during the change process, and the average particle size of the core part is 9 μm.
[0104] The average molar ratio of the metal ions in the outer shell is Ni: Co: Mn: Zr = 0.80: 0.05: 0.14: 0.01, wherein the content o...
Embodiment 2
[0122] (1) Lithium-ion battery cathode material precursor T2
[0123] Lithium-ion battery cathode material precursor T2 structural formula is:
[0124] 0.41[(Ni 0.8 co 0.05 mn 0.14 Nb 0.01 )(OH) 2 ]·0.59[(Ni 0.7 co 0.05 mn 0.24 Zr 0.01 )(OH) 2 ].
[0125] The average molar ratio of metal ions in the inner core is Ni: Co: Mn: Nb = 0.80: 0.05: 0.14: 0.01, wherein the content of the doping element Nb decreases continuously along the direction from the core to the surface of the core, and the change rule is 0.02-0; at the same time The content of Mn element increases along the direction from the core to the surface of the core, and the change rule is 0.13-0.15; and the total amount of doping elements Nb and Mn elements is maintained at 0.15 during the change process; the average particle size of the core part is 9 μm.
[0126] The average molar ratio of metal ions in the outer shell is Ni: Co: Mn: Zr = 0.70: 0.05: 0.24: 0.01, in which the content of the doping element Z...
PUM
Property | Measurement | Unit |
---|---|---|
Diameter | aaaaa | aaaaa |
Thickness | aaaaa | aaaaa |
Diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap