摘要:
The invention relates to an alkaline fuel cell comprising at least one electrolyte (1) having an anode (2) disposed thereon. The anode (2) comprises a stack of layers consisting of a first thin layer (3) and a second thin layer (4), said second thin layer being disposed between the electrolyte (1) and the first thin layer (3). The first thin layer (3) is made from aluminium or aluminium alloy, while the second thin layer (4) is made from zinc or zinc alloy. Moreover, the anode (2) of the alkaline fuel cell is preferably produced using physical vapour-phase deposition in order to deposit the second thin layer (4), which is intended to come into contact with the electrolyte (1), on a substrate formed by the first thin layer (3) of aluminium or aluminium alloy.
摘要:
The invention relates to an alkali fuel cell comprising a solid stack consisting of a first electrode (2), a solid membrane (3) conducting hydroxide ions, and a second electrode (4), each electrode (2, 4) comprising an active layer (2a, 4a) that is in contact with the solid membrane (3). The material of the active layer (2a, 4a) of each electrode (2a, 4) comprises at least one catalytic element, an electronic conductive element, and an element conducting hydroxide ions. The element that conducts hydroxide ions is a styrenic polymer having a quaternary ammonium function, and a hydroxide ion OH- is associated with each quaternary ammonium function. One such alkali fuel cell is unaffected by carbonatation and maintains good electrochemical performances.
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.