ELECTRODE FOR ALKALI FUEL CELL AND METHOD FOR MAKING A FUEL CELL INCLUDING AT LEAST ONE STEP OF MAKING SUCH AN ELECTRODE

摘要

The invention concerns an electrode (1) for an alkali fuel cell comprising an active layer consisting of a double layer (2) or by a stack of double layers (2). Each double layer (2) consists of a catalytic layer (3) comprising catalyst nanoparticles and of a porous layer (4) comprising two opposite surfaces (4a, 4b) one of which is in contact with the catalytic layer (3). The porous layer (4) consists of a porous composite material comprising a hydroxide ion-conducting polymer matrix wherein is formed a metal array constituting a plurality of electronically conductive paths connecting the two opposite surfaces of the porous layer. Advantageously, such an electrode is produced by successively depositing under vacuum, on a free surface of a support (5), catalyst particles and co-depositing under vacuum the hydroxide ion-conducting polymer and the metal.