公开(公告)号：US11831001B2

公开(公告)日：2023-11-28

申请号：US17319654

申请日：2021-05-13

Applicant: SAFT AMERICA

Inventor： Xilin Chen ,  Frank Cao ,  Tyler Ruff ,  Jian Dong ,  Carine Margez Steinway ,  Thomas Greszler ,  Kamen Nechev

IPC: H01M4/04 ,  H01M4/58 ,  H01M10/0525 ,  H01M10/44 ,  H01M4/02

CPC classification number: H01M4/04 ,  H01M4/5825 ,  H01M10/0525 ,  H01M10/446 ,  H01M2004/028

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.