公开(公告)号：US11302965B2

公开(公告)日：2022-04-12

申请号：US16270160

申请日：2019-02-07

Applicant: SAFT AMERICA

Inventor： Joong Sun Park ,  Saori Tokuoka ,  Carine Margez ,  Thomas Greszler

IPC: H01M10/0569 ,  H01M4/505 ,  H01M4/58 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/0567

Abstract: Provided are an electrolyte for low temperature operation of lithium titanate electrodes, graphite electrodes, and lithium-ion batteries as well as electrodes and batteries employing the same. The electrolyte contains 1 to 30 vol % of a low molecular weight ester having a molecular weight of less than 105 g/mol and at least one non-fluorinated carbonate. An electrolyte additive may include 0.1 to 10 wt % of fluorinated ethylene carbonate, particularly when used with a graphite anode. Another electrolyte contains a high content of the low molecular weight ester of at least 70 vol %.

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：US11631866B2

公开(公告)日：2023-04-18

申请号：US16895399

申请日：2020-06-08

Applicant: SAFT AMERICA

Inventor： Thomas Greszler ,  Saori Tokuoka

IPC: H01M6/18 ,  H01M50/124 ,  H01M50/531 ,  H01M50/40 ,  H01M50/105 ,  H01M50/10 ,  H01M4/525 ,  H01M4/583 ,  H01M4/66 ,  H01M6/02 ,  H01M6/16 ,  H01M10/04

Abstract: Provided is pouch battery including an electrode assembly, and a case in which the electrode assembly is sealed and housed; the electrode assembly including a stacked structure of a sheet cathode, a sheet separator, and a sheet anode; the sheet cathode including a positive electrode active material disposed on a current collector; the sheet anode is thin conductive sheet on which lithium metal reversibly deposits on a surface thereof during discharging; the sheet anode being made of a conductive material other than lithium and having a surface substantially free from lithium metal prior to charging the battery. The pouch battery design is flexible and lightweight and provides high power density, making it a suitable replacement for conventional lithium-ion primary batteries and thermal batteries in many applications. Power can be further increased by the application of external compression. Additives and formation conditions can be tailored for forming a solid-electrolyte interface (SEI).

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