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US 2026/0217555 A1Published application
Methods of making sacrificial cathode additives for lithium-ion batteries and a high fluorine disordered rock-salt cathode material
AssigneeThe Regents of the University of California
InventorsHaegyum KIM, Venkata Sai AVVARU, KyuJung JUN
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Abstract
This disclosure provides systems, methods, and apparatus related to high fluorine disordered rock-salt materials. In one aspect Li6MnO4, MnF2, and TiO2 are mixed to form a mixture. The mixture is ball milled. After the ball milling, the mixture is annealed at about 800° C. to 850° C. for about 2 hours to 10 hours, to form a compound. The compound is Li1+xMnyTi1−x−yO2−zFz, with x about 0.1 to 0.4, with y about 0.3 to 0.7, and with z>0.2.
Claims20
A method comprising:
- mixing Li2O and MnO to form a mixture;
- annealing the mixture at about 900° C. to 1100° C. for about 2 hours to 24 hours;
- and
- cooling the mixture at a rate of about 30° C./min to 7000° C./min to form Li6MnO4.
1 more element
A method comprising:
- mixing Li6MnO4, MnF2, and TiO2 to form a mixture;
- ball milling the mixture;
- and
- after the ball milling, annealing the mixture at about 800° C. to 850° C. for about 2 hours to 10 hours to form a compound, the compound being Li1+xMnyTi1−x−yO2−zFz, with x about 0.1 to 0.4, with y about 0.3 to 0.7, and with z>0.2.
1 more element
A method comprising:
- mixing Li2O and MnO to form a mixture;
- annealing the mixture at about 900° C. to 1100° C. for about 2 hours to 24 hours;
- cooling the mixture at a rate of about 30° C./min to 7000° C./min to form Li6MnO4;
- mixing MnF2, TiO2, and the Li6MnO4 to form a second mixture;
- ball milling the second mixture;
- and
- after the ball milling, annealing the second mixture at about 800° C. to 850° C. for about 2 hours to 10 hours to form a compound, the compound being Li1+xMnyTi1−x−yO2−zFz, with x about 0.1 to 0.4, with y about 0.3 to 0.7, and with z>0.2.
4 more elements
Dependencies are inferred from the claim text.