MEMBRANA ELECTROLITICA DE OXIDO SOLIDO SOPORTADA SOBRE NERVIOS DE SILICIO DOPADO PARA APLICACIONES EN MICRO PILAS DE COMBUSTIBLE DE OXIDO SOLIDO

The invention relates to a solid oxide fuel cell comprising: (a) a substrate having at least one cavity for forming a membrane; (b) an electrolyte membrane based on a thin layer of a solid oxide of more than 5 nm but less than 5 mum in thickness, covering the cavity formed in the substrate; (c) a network of doped silicon ribs crossing the cavity just below the electrolyte membrane, such as to serve as a support for the electrolyte, said silicon ribs defining individual electrolyte membranes, the size of which is always greater than the thickness of the ribs and which together form the large-surface electrolyte membrane; and (d) two fine layers acting as electrodes, deposited on each side of the electrolyte membrane. The invention also relates to the method for producing said fuel cell.