Patent · US Active

Pre-lithiation method and pre-lithiated lithium-ion secondary battery

US11831001B2 · kind B2 · utility

0Cited by

1References

19Claims

0Family size

Assignee

SAFT AMERICA · US

Inventors

Xilin Chen · Richland, US
Frank Cao · North Potomac, US
Tyler RUFF · Hanover, US
Jian Dong · Fairfax, US
Carine Margez Steinway · Baltimore, US
Thomas A. Greszler · Phoenix, US
Kamen Nechev · Baldwin, US

Key dates

Filing date	May 13, 2021
Grant date	Nov 28, 2023
Priority date	—
Expiry date	Sep 29, 2041

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P70/50
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Pre-lithiation methods using lithium vanadium fluorophosphate (e.g., LiVPO4F and its derivatives) (“LVPF”) as a cathode active material in a lithium-ion secondary battery. The pre-lithiation methods include compensating for an expected loss of active lithium by selecting LVPF having a specific pre-lithiated chemistry (or a blend of LVPF selected to have a specific pre-lithiated chemistry) and selecting a total amount of the pre-lithiated LVPF. The pre-lithiation methods may include initially charging the lithium-ion secondary battery at the lower of the two charge/discharge plateaus of LVPF to release active lithium.

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