公开(公告)号：US11804601B2

公开(公告)日：2023-10-31

申请号：US16569116

申请日：2019-09-12

Applicant: SAFT AMERICA

Inventor： Xilin Chen ,  Saori Tokuoka ,  Frank Cao ,  Jian Dong ,  Carine Margez ,  Owen Ou ,  Thomas Greszler

IPC: H01M4/58 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0563 ,  H01M10/0568 ,  H01M4/02

CPC classification number: H01M4/5825 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0563 ,  H01M10/0568 ,  H01M2004/028 ,  H01M2300/002

Abstract: Provided is a positive electrode active material for a lithium-ion battery, the positive electrode active material including a blend of a doped lithium manganese iron phosphate (dLMFP) according to the formula: LiMnxFeyM1−x−yPO4, wherein 0.9 70:

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.

公开(公告)号：US20230327111A1

公开(公告)日：2023-10-12

申请号：US17714264

申请日：2022-04-06

Applicant: SAFT AMERICA

Inventor： Saori TOKUOKA ,  Thomas Greszler ,  John Havranek ,  Jian Dong ,  Xilin Chen ,  Frank Cao

IPC: H01M4/587 ,  H01M10/0569 ,  H01M10/0567 ,  H01M10/0565 ,  H01M10/0525 ,  H01M4/525

CPC classification number: H01M4/587 ,  H01M10/0569 ,  H01M10/0567 ,  H01M2004/027 ,  H01M10/0525 ,  H01M4/525 ,  H01M10/0565

Abstract: A lithium-ion secondary battery, including (A) an anode including an anode active material; (B) a cathode including a cathode active material; (C) a separator; and (D) an electrolytic solution, the anode active material including (a1) about 5.0 to about 45.0 wt % natural graphite particles, and (a2) about 95.0 to about 55.0 wt % artificial graphite particles; a size of both the natural and artificial graphite particles (a1), (a2) independently being about 2.0 μm