公开(公告)号：US11817579B2

公开(公告)日：2023-11-14

申请号：US16754606

申请日：2018-09-27

Applicant: HUTCHINSON

Inventor： Bruno Dufour ,  Marc Zimmermann ,  Ksenia Astafyeva ,  Melanie Leclerc

IPC: H01M4/525 ,  H01M4/04 ,  H01M4/1399 ,  H01M4/62 ,  H01M4/66 ,  H01M10/0525 ,  H01M10/0569 ,  H01M4/02

CPC classification number: H01M4/525 ,  H01M4/0466 ,  H01M4/1399 ,  H01M4/622 ,  H01M4/625 ,  H01M4/661 ,  H01M10/0525 ,  H01M10/0569 ,  H01M2004/021

Abstract: The invention relates to a cathode composition usable in a lithium-ion battery, to a process for the preparation of this composition, to such a cathode and to a lithium-ion battery incorporating this cathode.
The composition comprises an active material which comprises an alloy of lithium nickel cobalt aluminum oxides, an electrically conductive filler and a polymeric binder, and it is such that said polymeric binder comprises at least one modified polymer (Id2) which is the product of a thermal oxidation reaction of a starting polymer and which incorporates oxygenated groups comprising CO groups, the composition being capable of being obtained by the molten route and without evaporation of solvent by being the product of said thermal oxidation reaction applied to a precursor mixture comprising said active material, said electrically conductive filler, said starting polymer and a sacrificial polymer phase.

公开(公告)号：US11133493B2

公开(公告)日：2021-09-28

申请号：US16320603

申请日：2017-07-21

Applicant: HUTCHINSON

Inventor： Philippe Sonntag ,  Julie Courtat ,  Marc Zimmermann ,  Ksenia Astafyeva ,  Bruno Dufour ,  David Ayme-Perrot

IPC: H01M4/133 ,  H01M4/04 ,  H01M4/1393 ,  H01M4/62 ,  H01M4/587 ,  H01M10/0525

Abstract: Polymer composition for an electrode, method, and a lithium-ion battery including same are provided. This composition includes an active material having a graphite usable in the anode, an electrically conductive filler and a cross-linked elastomer binder that includes a hydrogenated acrylonitrile butadiene copolymer (HNBR). The binder includes a non-hydrogenated acrylonitrile butadiene copolymer (NBR) and/or a HNBR with an acrylonitrile content that is at least 40% by weight and cross-linked by thermal oxidation. This method includes: a) mixing the active material, the binder in a non-cross-linked state and the electrically conductive filler, to obtain a precursor mixture of the composition, b) depositing the mixture on a metal current collector so that the mixture forms a non-cross-linked film, then c) thermal oxidation of the non-cross-linked film under an atmosphere containing oxygen at a temperature of between 200 and 300° C., to obtain the electrode in which the binder is cross-linked.