公开(公告)号：US20210083289A1

公开(公告)日：2021-03-18

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 ,  H01M10/0525 ,  H01M4/525 ,  H01M10/0563 ,  H01M10/0568

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：US20200259215A1

公开(公告)日：2020-08-13

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 ,  H01M4/58 ,  H01M4/587 ,  H01M4/505 ,  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：US20240297304A1

公开(公告)日：2024-09-05

申请号：US18171799

申请日：2023-02-21

Applicant: SAFT AMERICA

Inventor： Xilin CHEN ,  Frank CAO ,  Lianxi YANG ,  Carlos NEGRETE ,  Thomas GRESZLER

IPC: H01M4/485 ,  H01M4/1315 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0569

CPC classification number: H01M4/485 ,  H01M4/1315 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0569 ,  H01M2004/028 ,  H01M2300/004

Abstract: Provided is a lithium-ion secondary batteries including lithium vanadium fluorophosphate (e.g., LiVPO4F and its derivatives) and/or a mix containing LVPF as a positive electrode active material and an electrolytic solution including tris(trimethylsilyl)phosphate (TTSP) to reduce cycle capacity loss.

公开(公告)号：US20210135173A1

公开(公告)日：2021-05-06

申请号：US16668927

申请日：2019-10-30

Applicant: SAFT AMERICA

Inventor： Saori TOKUOKA ,  Thomas GRESZLER ,  James G. SNYDER

IPC: H01M2/10 ,  H01M4/36 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/48

Abstract: Provided are battery modules having two different types electrochemistry connected in series, which includes a plurality of a first cell, wherein the first cell includes an anode active material of graphite, Si, SiOx, or a blend thereof as a main component (“a GSi cell”), and at least one of a second cell, wherein the second cell includes an anode active material of a lithium titanate oxide or titanate oxide able to be lithiated as a main component (“a LTO cell”). Also provided are battery systems that include a plurality of the battery modules.

公开(公告)号：US20220367842A1

公开(公告)日：2022-11-17

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 ,  H01M10/0525 ,  H01M4/58 ,  H01M10/44

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：US20210384527A1

公开(公告)日：2021-12-09

申请号：US16895399

申请日：2020-06-08

Applicant: SAFT AMERICA

Inventor： Thomas GRESZLER ,  Saori TOKUOKA

IPC: H01M6/18 ,  H01M2/02 ,  H01M2/26 ,  H01M4/583 ,  H01M6/16 ,  H01M4/66 ,  H01M6/02

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).