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US 2018/0123117 A9Published application
Cathode active materials for lithium-ion batteries
AssigneeApple Inc.
InventorsHongli Dai, Akshaya K. Padhi, Huiming Wu, Dapeng Wang, Christopher S. Johnson, John David Carter, Martin Bettge, Ana Kircova, Chi-Kai Lin, YoungHo Shin, Xiaoping Wang
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Abstract
Compounds, powders, and cathode active materials that can be used in lithium ion batteries are described herein. Methods of making such compounds, powders, and cathode active materials are described.
Claims20
A compound represented by Formula (III):
- LiαCo1−xMxAlγOδ (III)
- wherein M is selected from B, Na, Mn, Ni, Mg, Ti, Ca, V, Cr, Fe, Cu, Zn, Al, Sc, Y, Ga, Zr, Mo, Ru and a combination thereof,
- 0.95≤α≤1.10,
- 0<x<0.50
- 0≤γ≤0.05, and
- 1.95≤δ≤2.60.
3 more elements
A powder comprising:
- particles comprising a core and a coating disposed over at least a portion of the core;
- wherein the core comprises a compound selected from the compound represented by Formula (I), Formula (IIa), or Formula (III):
- LiαMOδ, (I)
- (x)[Li2M1O3]•(1−x)[LiM2O2] (IIa)
- (x)[Li2M1O3]•(1−x)[Li1−yM2O2] (IIb)
- LiαCo1−xMxAlγOδ (III)
- wherein:
- when the compound is Formula (I),
- M is selected from Co, Mn, Ni, and a combination thereof,
- 0.95≤α≤2,
- 1.90≤δ≤3;
- when the compound is Formula (IIa),
- 0≤x≤1,
- M1 is selected from Ti, Mn, Zr, Mo, Ru and a combination thereof, and
- M2 is selected from B, Na, Mg, Ti, Ca, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Al, Sc, Y, Ga, Zr, Mo, Ru and a combination thereof;
- when the compound is Formula (IIb),
- 0≤x≤1,
- 0≤y≤1,
- M1 is selected from Ti, Mn, Zr, Mo, Ru and a combination thereof, and
- M2 is selected from B, Na, Mg, Ti, Ca, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Al, Sc, Y, Ga, Zr, Mo, Ru and a combination thereof;
- and
- when the compound is Formula (III),
- M is selected from B, Na, Mn, Ni, Mg, Ti, Ca, V, Cr, Fe, Cu, Zn, Al, Sc, Y, Ga, Zr, Mo, Ru and a combination thereof,
- 0.95≤α≤1.10,
- 0<x<0.50,
- 0≤γ≤0.05, and
- 1.95≤δ≤2.60;
- and
- wherein the coating comprises an oxide material, a fluoride material, or a combination thereof.
26 more elements
Dependencies are inferred from the claim text.