Centre National De La Recherche Scientifique

Université Paul Sabatier (toulouse Iii)

Institut Polytechnique De Grenoble

UniversitÉ´de Rouen

Quang Trong Nguyen

Cristina Iojoiu

Regis Mercier

Thierry Lebey

Stephane Marais

Sophie Guillemet

Madona Boulos

Sema Karademir

Bernard Durand

Mathieu Martinez

Corinne Chappey

Dominique Langevin

Jean-Ives Sanchez

The present invention relates to a membrane that includes a porous polymer material made of a polyimide with interconnected macropores and impregnated with protic ionic liquid conductors (CLIP), as well as to the method for manufacturing same and to the uses thereof. The membranes of the invention fulfill the need for membranes including CLIPs, which have good proton-conducting properties as well as good physical properties, in particular high thermal and mechanical stability, in addition to a wide range of electrochemical stability.

Proton-conducting composite membrane for fuel cells

The present invention relates to a method of preparing ceramics based on lanthanum-doped barium titanate, which comprises the following steps: (a) flash sintering of lanthanum-doped barium titanate powders; and (b) heat treatment of the material thus obtained, in an air atmosphere or in an oxidising atmosphere. The invention also relates to ceramics based on lanthanum-doped barium titanate, possessing a very high real part of the relative dielectric permittivity, and to their use for obtaining capacitors of high capacitance and high capacitance per unit volume for high-voltage withstand capability.

Ceramics based on lanthanum-doped barium titanate, method of preparation and uses

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Le Havre, France

Quang Trong Nguyen