ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,729,133, issued on Sept. 8, was assigned to California Institute of Technology (Pasadena, Calif.).

"Lithium-rich aluminum iron sulfide Li-ion battery cathodes" was invented by Eshaan S. Patheria (Pasadena, Calif.) and Kimberly A. Robb (Pasadena, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided herein are compositions, devices, electrochemical systems, and methods relating to lithium-rich iron sulfide lithium-ion battery cathodes. In one embodiment, a composition may be characterized by formula FX1: Liw-DeltaAlxFezS2. In some embodiments, w may be greater than or equal to 2 and less than or equal to 2.5. In some embodiments, x may be greate...