Method for the fabrication of an electrochemical cell

Details Method for the fabrication of an electrochemical cell Method for the fabrication of an electrochemical cell

C - Chemistry, Metallurgy

08

J

C08J 7/12 (2006.01) C25B 9/00 (2006.01) H01M 2/02 (2006.01) H01M 8/02 (2006.01) H01M 8/24 (2006.01) H01M 8/18 (2006.01)

Patent

CA 2187364

A method for the fabrication of an electrochemical cell which has long term chemical stability to anolyte and catholyle solutions at pH's of less than 2 and above 12, which method comprises the steps of: i) thermally processing a polymeric material which exhibits a glass transition and/or melting thermal transition to form the cell structure or components of the cell structure, and ii) subjecting the surfaces of the cell structure or components of the cell structure which, in use, will be in contact with the anolyte and catholyte solutions, to a post halogenation process, whereby the polymeric material forming the said surfaces undergoes halogen substitution to form a chemically stable halogen modified polymeric material.

Procédé de fabrication d'une cellule électrochimique possédant une stabilité chimique de longue durée lorsqu'elle est utilisée avec des solutions anolytes et catholytes, à des pH inférieurs à 2 et supérieurs à 12, ce procédé comprenant les étapes consistant: i) à traiter thermiquement un matériau polymère présentant une transition vitreuse et/ou une transition thermique de fusion, afin de former la structure de la cellule ou les constituants cette structure, et ii) à soumettre les surfaces de la structure de cellule ou des constituants de celle-ci, qui seront, lors de l'utilisation de la cellule, en contact avec les solutions anolytes et catholytes, à un procédé de post-halogénation, grâce auquel le matériau polymère formant lesdites surfaces subit une substitution halogène afin de former un matériau polymère modifié par l'halogène et chimiquement stable.

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