Solvay Sa

Centre National De La Recherche Scientifique

Commissariat a L'energie Atomique Et Aux Energies Alternatives

Hutchinson

Université De Nantes

Aurélie Guyomard-Lack

Julio A Abusleme

Dominique Guyomard

Bernard Lestriez

Jean Le Bideau

Christine Hamon

Marc-David Braida

David Ayme-Perrot

Hélène Rouault

Olivier Pras

Carole Cerclier

Nela Buchtova

Philippe-Franck Girard

The invention pertains to a process for the manufacture of a fluoropolymer film, to the fluoropolymer film obtainable therefrom and to use of said fluoropolymer film in electrochemical and photo-electrochemical devices.

Fluoropolymer film

The present invention pertains to an electrode-forming composition, to use of said electrode-forming composition in a process for the manufacture of an electrode, to said electrode and to an electrochemical device comprising said electrode. The electrode-forming composition comprises at least one partially fluorinated fluoropolymer comprising recurring units derived from at least one fluorinated monomer and at least one functional hydrogenated monomer comprising at least one carboxylic acid end group, at least one electro-active compound, at least one liquid medium comprising at least one organic carbonate or at least one ionic liquid, and at least one metal salt.

Electrode-forming composition

The invention pertains to a process for manufacturing a fluoropolynner film comprising a fluoropolymer hybrid organic/inorganic composite, said process comprising the following steps: (i) providing a mixture of: &#x2014;at least one fluoropolymer [polymer (F)]; &#x2014;at least one metal compound [compound (M)] having formula: XAYwherein m is an integer from 1 to 4, A is a metal selected from the group consisting of Si, Ti and Zr, Y is a hydrolysable group and X is a hydrocarbon group, optionally comprising one or more functional groups; &#x2014;a liquid medium consisting essentially of at least one ionic liquid (IL) and, optionally, at least one additive (A); &#x2014;optionally, at least one electrolytic salt (ES); and &#x2014;optionally, at least one organic solvent (S); (ii) hydrolyzing and/or polycondensing said compound (M) to yield a liquid mixture comprising fluoropolymer hybrid organic/inorganic composite comprising inorganic domains and incorporating said liquid medium; (iii) processing a film from the liquid mixture obtained in step (ii); and (iv) drying and then, optionally, curing the film obtained in step (iii) for obtaining the fluoropolymer film. The invention also pertains to the fluoropolymer film obtained from said process and to use of said fluoropolymer film in electrochemical and photo-electrochemical devices.

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Saint Lambert la Potherie, France

Aurélie Guyomard-Lack