公开(公告)号：US20240405193A1

公开(公告)日：2024-12-05

申请号：US18698133

申请日：2022-10-04

Applicant: SAFT

Inventor： Fabrice RENE ,  Catherine LEPILLER ,  Benjamin LE GUERN ,  Olivier HUCHET

IPC: H01M4/133 ,  H01M4/02 ,  H01M4/134 ,  H01M4/40 ,  H01M4/58 ,  H01M50/107

Abstract: An electrochemical cell including a container including an electrochemical spiral bundle including: a positive electrode including an active material selected from among SOCl2, SO2, SO2Cl; CFx where x≤1.5; MnO2, FeS2, V2O5, I2, Bi2O3, Bi2Pb2O5, CuCl2, CuF2, CuO, Cu4O(PO4)2, CuS, FeS, MoO3, Ni3S2, AgCl, Ag2CrO4, SVO, MO6S8, and a mixture of a plurality thereof; a separator; and a negative electrode including an active material made of lithium metal or of a lithium-based alloy. The outer face of the spiral, facing the container, is formed by the positive electrode, and a strip of lithium or of a lithium-based alloy at least partially covers the inner face of the container. The strip pressed against the inner face of the container makes it possible to make use of an outer face of the positive electrode which forms the last turn of the spirally-wound electrode plate group.

公开(公告)号：US20200266492A1

公开(公告)日：2020-08-20

申请号：US16647979

申请日：2018-10-01

Applicant: SAFT

Inventor： Erwan DUMONT ,  Frédéric CASTAING ,  Benjamin LE GUERN ,  Fabrice RENE ,  Michel ULLDEMOLINS ,  Cécile TESSIER ,  Jean-Paul PERES ,  Florent FISCHER

IPC: H01M10/0569 ,  H01M2/16 ,  H01M4/62 ,  H01M4/74 ,  H01M10/0525

Abstract: A lithium-ion electrochemical cell comprising: at least one negative electrode comprising an active material having an operating potential greater than or equal to 1 V with respect to the potential of the electrochemical couple Li+/Li; at least one positive electrode; the negative electrode and/or the positive electrode comprising a binder selected from polytetrafluoroethylene, polyamideimide, polyimide, styrene-butadiene rubber and polyvinyl alcohol or a mixture thereof; a liquid electrolyte comprising a solvent which is an ionic liquid; a separator having a shrinkage of less than or equal to 3% in the direction of its length and in the direction of its width, after exposure to a temperature of 200° C. for a period of at least one hour. This electrochemical cell can be used in charge or discharge at a temperature ranging from room temperature to 150° C. or higher.