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US 2026/0209068 A1Published application
Doped manganese-rich cathode active materials and methods thereof
OwnerAndrew Phillip Ulvestad, Derrick Charles Sokol +1inventors
InventorsAndrew Phillip Ulvestad, Derrick Charles Sokol, Vineet Haresh Mehta
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Abstract
Doped manganese-rich cathode active materials, and methods of manufacture, are described. The doped manganese-rich cathode active materials enable energy storage devices with improved performances, including but not limited to improved cycle life and capacity retention.
Claims29
A doped cathode active material, comprising a compound having the chemical formula:
- wherein:
- M is a metal dopant;
- M′ is a Group 13 dopant;
- X is an anion dopant;
- a is a value from 0 to 0.2;
- b is a value from 0.01 to 0.1;
- c is a value from 0 to 0.2;
- d is a value from 0 to 0.04;
- and
- e is a value from 0.001 to 0.04.
7 more elements
A process of forming a doped cathode active material, comprising:
- combining a manganese source, a dopant material, and a lithium source to form a doped cathode active material mixture;
- and
- heating the doped cathode active material mixture to form a doped cathode active material.
A process of forming a doped cathode active material, comprising:
- combining a manganese source, a first dopant material, and a lithium source to form a first doped cathode active material mixture;
- heating the first doped cathode active material mixture at a first temperature;
- combining the heated first doped cathode active material mixture with a second dopant material to form a second doped cathode active material mixture;
- and
- heating the second doped cathode active material mixture at a second temperature different from the first temperature to form the doped cathode active material.
2 more elements
Dependencies are inferred from the claim text.