Patent · US Active

Cation-disordered rocksalt lithium manganese oxides or oxyfluorides

US11769876B2 · kind B2 · utility

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1References

43Claims

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Assignee

The Regents of the University of California · US

Inventors

Gerbrand Ceder · Wellesley, US
Zhengyan Lun · Albany, US
Bin Ouyang · Richmond, US

Key dates

Filing date	Aug 11, 2020
Grant date	Sep 26, 2023
Priority date	—
Expiry date	Apr 12, 2041

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E60/10
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A class of compositions in the Li—Mn—O—F chemical space for Li-ion cathode materials. The compositions are cobalt-free, high-capacity Li-ion battery cathode materials synthesized with cation-disordered rocksalt (DRX) oxide or oxyfluorides, with the general formula LixMn2-xO2-yFy (1.1≤x≤1.3333; 0≤y≤0.6667). The compositions are characterized by: (i) high capacities (e.g., >240 mAh/g); (ii) high energy densities (e.g., >750 Wh/kg between 1.5-4.8V); (iii) favorable cyclability; and (iv) low cost.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.