LAYERED OXIDE COMPOSITE CATHODES FOR LITHIUM-ION BATTERIES

1 . An apparatus to power electric vehicles, comprising:

a battery pack disposed in an electric vehicle to power the electric vehicle; and

a battery cell arranged in the battery pack, the battery cell having a housing that defines a cavity within the housing of the battery cell, the battery cell having:

an electrolyte having a first side and a second side to transfer lithium ions between the first side and the second side, the electrolyte arranged within the cavity;

an anode disposed within the cavity along the first side of the electrolyte, the anode electrically coupled with a negative terminal; and

a composite cathode disposed within the cavity along the second side of the electrolyte, the composite cathode electrically coupled with a positive terminal, the composite cathode comprising a lithium nickel cobalt aluminum oxide (NCA) material and a lithium nickel manganese cobalt oxide (NCM) material.

2 . The apparatus of claim 1 , comprising:

the composite cathode comprising a blended mixture of the NCA material and the NCM material at a predefined ratio to attain a target operating characteristic.

3 . The apparatus of claim 1 , comprising:

the NCA material ranging between 75% to 85% of the composite cathode in weight and the NCM material ranging between 15% to 25% of the composite cathode in weight.

4 . The apparatus of claim 1 , comprising:

the NCA material ranging between 30% to 50% of the composite cathode in weight and the NCM material ranging between 70% to 50% of the composite cathode in weight.

5 . The apparatus of claim 1 , comprising:

the composite cathode having a predefined content of nickel in the NCA material and the NCM material to attain a target specific capacity.

6 . The apparatus of claim 1 , comprising:

the composite cathode comprising a predefined ratio of the NCA material and the NCM material to attain a target thermal stability.

7 . The apparatus of claim 1 , comprising:

the composite cathode comprising a predefined ratio of the NCA material and the NCM material to attain a target retention capacity.

8 . The apparatus of claim 1 , comprising:

the composite cathode comprising a predefined ratio of the NCA material and the NCM material to attain a target energy density.

9 . The apparatus of claim 1 , comprising:

the composite cathode comprising a surface coated structure comprised of the NCA material and the NCM material.

10 . The apparatus of claim 1 , comprising:

the composite cathode comprising a spatial grading comprised of the NCA material and the NCM material.

11 . The apparatus of claim 1 , comprising:

the battery pack installed in the electric vehicle to power one or more components of the electric vehicle.

12 . A method of providing battery cells to power electric vehicles, comprising:

disposing a battery pack in an electric vehicle to power the electric vehicle;

arranging a battery cell in the battery pack, the battery cell having a housing that defines a cavity within the housing of the battery cell;

arranging, within the cavity, an electrolyte having a first side and a second side to transfer lithium ions between the first side and the second side;

disposing, within the cavity, an anode disposed along the first side of the electrolyte, the anode electrically coupled with a negative terminal; and

disposing, within the cavity, a composite cathode along the second side of the electrolyte, the composite cathode electrically coupled with a positive terminal, the composite cathode comprising a lithium nickel cobalt aluminum oxide (NCA) material and a lithium nickel manganese cobalt oxide (NCM) material.

13 . The method of claim 12 , comprising:

disposing, within the cavity, the composite cathode comprising a blended mixture of the NCA material and the NCM material at a predetermined ratio to attain a target operating characteristic.

14 . The method of claim 12 , comprising:

setting the NCA material ranging between 75% to 85% of the composite cathode in weight and the NCM material ranging between 15% to 25% of the composite cathode in weight.

15 . The method of claim 12 , comprising:

setting the NCA material ranging between 30% to 50% of the composite cathode in weight and the NCM material ranging between 70% to 50% of the composite cathode in weight.

16 . The method of claim 12 , comprising:

installing the battery pack in the electric vehicle to power one or more components of the electric vehicle.

17 . An electric vehicle, comprising:

one or more components;

a battery pack to power the one or more components; and

a battery cell arranged in the battery pack, the battery cell having a housing that defines a cavity within the housing of the battery cell, the battery cell having:

an electrolyte having a first side and a second side to transfer lithium ions between the first side and the second side, the electrolyte arranged within the cavity;

an anode disposed within the cavity along the first side of the electrolyte, the anode electrically coupled with a negative terminal; and

a composite cathode disposed within the cavity along the second side of the electrolyte, the composite cathode electrically coupled with a positive terminal, the composite cathode comprising a lithium nickel cobalt aluminum oxide (NCA) material and a lithium nickel manganese cobalt oxide (NCM) material.

18 . The electric vehicle of claim 17 , comprising:

the composite cathode comprising a blended mixture of the NCA material and the NCM material at a predetermined ratio to attain a target operating characteristic.

19 . The electric vehicle of claim 17 , comprising:

the NCA material ranging between 75% to 85% of the composite cathode in weight and the NCM material ranging between 15% to 25% of the composite cathode in weight.

20 . The electric vehicle of claim 17 , comprising:

the NCA material ranging between 30% to 50% of the composite cathode in weight and the NCM material ranging between 70% to 50% of the composite cathode in weight.