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US 10,290,869 B2Granted
Doped lithium-rich layered composite cathode materials
OwnerRichard L. Axelbaum, Miklos Lengyelinventors
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Abstract
A layered composite composition having a general chemical formula of Liα-xADx(Mnβ-y-εAlyNiγ-εCoδ-zAEDz)O2, wherein AD is an alkaline dopant for Li, AED is an alkaline earth dopant for Co or Ni, and Al is a dopant for Mn or Ni, and at least two of AD, AED, and Al are present in the composition, and the dopants, if present, are at an amount that does not result in the formation of new phase.
Claims37
A layered composite composition having a general chemical formula of Liα-xADx(Mnβ-y-εAlyNiγ-εCoδ-zAEDz)O2 wherein:
- AD is an alkaline dopant selected from the group consisting of Na, K, Rb, Cs, and combinations thereof;
- AED is an alkaline earth dopant selected from the group consisting of Mg, Ca, Sr, Ba, and combinations thereof;
- 1≤α≤2;
- 0≤x<an alkaline dopant threshold concentration at and above which an alkaline-containing spinel phase is formed in the composition;
- ⅓≤β≤1;
- 0≤y<0.1;
- 0.0≤γ≤⅓;
- 0.0≤δ≤⅓;
- 0≤z, ε≤an alkaline earth threshold concentration at and above which an alkaline earth-containing spinel phase is formed in the composition;
- and
- at least two of x, y, z, and ε are ≥0.001.
8 more elements
Dependencies are inferred from the claim text.