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US 8,999,588 B2Granted
Positive electrode for a lithium battery
AssigneeUchicago Argonne, LLC
InventorsSang-Ho Park, Khalil Amine
Life of this patent
Estimating the term…
Abstract
A method for producing a lithium alkali transition metal oxide for use as a positive electrode material for lithium secondary batteries by a precipitation method. The positive electrode material is a lithium alkali transition metal composite oxide and is prepared by mixing a solid state mixed with alkali and transition metal carbonate and a lithium source. The mixture is thermally treated to obtain a small amount of alkali metal residual in the lithium transition metal composite oxide cathode material.
Claims9
A cathode material of general formula
- xLiAa′NiαCoβMnγMoδMyO2.(1−x)Li2MnyO3
- wherein:
- the LiAa′NiαCoβMnγMoδMyO2 and Li2MnγO3 components form a layered structure;
- A is Na, K, or a mixture of Na and K;
- M is Mg, Zn, Al, Ga, B, Zr, Si, Ti, Nb, W, or a mixture of any two or more thereof;
- X is F, S, Cl, I, or a mixture of any two or more thereof;
- x ranges from 0 to 1;
- a′ ranges from 0.01 to about 0.1;
- α ranges from 0.01 to 1;
- β ranges from 0 to 1;
- γ ranges from 0.01 to 1;
- δ ranges from 0 to 0.2;
- and
- y ranges from 0 to 0.15.
11 more elements
A positive electrode comprising a cathode material of general formula
- xLiAa′NiαCoβMnγMoδMyO2.(1−x)Li2MnγO3
- wherein:
- the LiAa′NiαCoβMnγMoδMyO2 and Li2MnγO3 components form a layered structure;
- A is Na, K, or a mixture of Na and K;
- M is Mg, Zn, Al, Ga, B, Zr, Si, Ti, Nb, W, or a mixture of any two or more thereof;
- X is F, S, Cl, I, or a mixture of any two or more thereof;
- x ranges from 0 to 1;
- a′ ranges from 0.01 to about 0.1;
- α ranges from 0.01 to 1;
- β ranges from 0 to 1;
- γ ranges from 0.01 to 1;
- δ ranges from 0 to 0.2;
- and
- y ranges from 0 to 0.15.
11 more elements
Dependencies are inferred from the claim text.