公开(公告)号：US11081761B2

公开(公告)日：2021-08-03

申请号：US16318878

申请日：2017-07-21

Applicant: HYDRO-QUÉBEC ,  Transfert Plus, S.E.C.

Inventor： Nicolas Delaporte ,  Diby Benjamin Ossonon ,  Karim Zaghib ,  Daniel Belanger

IPC: H01M50/46 ,  H01M4/04 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/13 ,  H01M4/1391 ,  H01M4/139 ,  H01M4/1397 ,  H01M50/403 ,  H01M50/411 ,  H01M10/052 ,  H01M4/131 ,  H01M4/136

Abstract: This application describes a process for the preparation of flexible electrode-separator elements or assemblies, which includes the application of an electrode material on the separator. The electrode material comprises graphene, for instance produced by graphite exfoliation. The electrode-separator elements obtained by the process as well as their use in electrochemical cells are also described.

公开(公告)号：US10811736B2

公开(公告)日：2020-10-20

申请号：US16318826

申请日：2017-07-21

Applicant: HYDRO-QUÉBEC ,  TRANSFERT PLUS, S.E.C.

Inventor： Nicolas Delaporte ,  Diby Benjamin Ossonon ,  Karim Zaghib ,  Daniel Belanger

IPC: H01M10/54 ,  H01M4/131 ,  H01M4/136 ,  H01M4/62

Abstract: A process for recycling an electrode material comprising graphene and an electrochemically active material is described. The process comprises a step of adding, in any order, water and a non-miscible solvent to the electrode material, thereby forming a biphasic system comprising an organic phase and an aqueous phase; and a step of separating and filtering the organic phase to recover graphene. The process optionally comprises additional steps of washing, drying, and/or thermally treating. Also described are electrodes including the recycled graphene, as well as the electrochemical cells and their uses.

公开(公告)号：US12155086B2

公开(公告)日：2024-11-26

申请号：US17424916

申请日：2020-02-14

Applicant: HYDRO-QUÉBEC

Inventor： Nicolas Delaporte ,  Alexis Perea ,  Karim Zaghib

IPC: H01M50/429 ,  C09K21/12 ,  H01M4/02 ,  H01M4/587 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M50/44 ,  H01M50/443 ,  H01M50/446 ,  H01M50/451 ,  H01M50/454

Abstract: The present technology relates to a flame retardant, a cellulose fiber separator containing the flame retardant, a component comprising the separator and an electrolyte, and electrochemical cells and batteries comprising same as well as the uses thereof.

公开(公告)号：US11811068B2

公开(公告)日：2023-11-07

申请号：US17048717

申请日：2019-05-15

Applicant: HYDRO-QUÉBEC

Inventor： Nicolas Delaporte ,  Abdelbast Guerfi ,  Karim Zaghib

IPC: H01M4/80 ,  H01M4/131 ,  H01M4/136 ,  H01M4/1391 ,  H01M4/1397 ,  H01M4/62 ,  H01M4/66 ,  H01M10/0525 ,  H01M10/054 ,  H01M4/02

CPC classification number: H01M4/806 ,  H01M4/131 ,  H01M4/136 ,  H01M4/1391 ,  H01M4/1397 ,  H01M4/621 ,  H01M4/663 ,  H01M4/667 ,  H01M10/054 ,  H01M10/0525 ,  H01M2004/027 ,  H01M2004/028

Abstract: The present technology relates to self-standing electrodes, their use in electrochemical cells, and their production processes using a water-based filtration process. For example, the self-standing electrodes may be used in lithium-ion batteries (LIBs). Particularly, the self-standing electrodes comprise a first electronically conductive material serving as a current collector, the surface of the first electronically conductive material being grafted with a hydrophilic group, a binder comprising cellulose fibres, an electrochemically active material, and optionally a second electronically conductive material. A process for the preparation of the self-standing electrodes is also described.