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US 8,012,624 B2Granted
Sintered cathode compositions
Assignee3M Innovative Properties Company
InventorsJunwei Jiang, Chris J. Goodbrake
Life of this patent
Estimating the term…
Abstract
Provided are compositions useful as cathodes in lithium-ion electrochemical cells. The compositions include particles that include transition metal oxides that have at least two distinct phases with different compositions. Each of the distinct phases comprises a layered O3 crystal structure.
Claims16
A cathode composition having particles comprising:
- a first distinct phase having a transition metal oxide comprising CoaNibMnc, where a is between 0.60 and 0.96, b is between 0.02 and 0.20, and c is between 0.02 and 0.20, wherein a, b, and c, are molar amounts of cobalt, nickel, and manganese, respectively, and wherein a+b+c=1;
- and
- a second distinct phase having a transition metal oxide comprising CoxNiyMnz, where x is between 0.40 and 0.60, y is between 0.20 and 0.30, and z is between 0.20 and 0.30, wherein x, y, and z are molar amounts of cobalt, nickel, and manganese, respectively, and wherein x+y+z=1,
- wherein each particle includes at least both the first distinct phase and the second distinct phase, and
- wherein each of the first distinct phase and the second distinct phase comprises a layered O3 crystal structure.
2 more elements
A cathode composition having particles comprising:
- a first distinct phase comprising a transition metal oxide comprising CoaNibMnc, wherein a is between 0.00 and 0.30, b is between 0.60 and 0.90, and c is between 0.00 and 0.20, and where a+b+c=1;
- and
- a second distinct phase comprising a transition metal oxide comprising CoxNiyMnz, wherein x is between 0.00 and 0.30, y is between 0.40 and 0.60, and z is between 0.20 and 0.40, and where x+y+z=1,
- wherein each particle includes at least both the first distinct phase and the second distinct phase, and
- wherein each of the first distinct phase and the second distinct phase comprises a layered O3 crystal structure.
2 more elements
Dependencies are inferred from the claim text.