公开(公告)号：US20190165366A1

公开(公告)日：2019-05-30

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 ,  H01M4/62 ,  H01M4/1393 ,  H01M4/04 ,  H01M10/0525 ,  H01M4/587

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 an 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.

公开(公告)号：US20200343548A1

公开(公告)日：2020-10-29

申请号：US16754276

申请日：2018-10-08

Applicant: HUTCHINSON

Inventor： Bruno DUFOUR ,  Marc ZIMMERMANN ,  Ksenia ASTAFYEVA ,  Julie COURTAT ,  Capucine DOUSSET

IPC: H01M4/525 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/62 ,  H01M4/583 ,  H01M10/44 ,  H01M4/36 ,  H01M4/66

Abstract: The invention relates to an electrode composition for lithium-ion battery, a process for preparing the composition, such an electrode and a lithium-ion battery incorporating same. The composition comprises an active substance able to perform reversible insertion/deinsertion of lithium in the electrode, an electrically conductive filler and a polymeric binder comprising at least one modified polyolefin, and it is such that the modified polyolefin (If1) is derived from a nonpolar aliphatic polyolefin and incorporates oxygenated CO and OH groups, having a content by weight of oxygen atoms of between 2% and 10% inclusive. The modified polyolefin may be the product of a controlled thermal oxidation reaction, under an atmosphere comprising oxygen and at a temperature of between 200° C. and 300° C., of the nonpolar aliphatic polyolefin with oxygen.