Unit cell for solid oxide fuel cell and related method

A unit cell for a solid oxide fuel cell comprises: (a) a battery element formed on the substrate and provided with an electrode layer and an electrolyte layer; and (b) a low porosity layer provided in the substrate and/or the battery element to have a second porosity lower than the first porosity. Sizes of the pores of the low porosity layer are =10 Micro to laminate a part of the battery element on the low porosity layer. A unit cell for a solid oxide fuel cell comprises a substrate (10) including a portion having a first porosity, a battery element (BE) formed on the substrate and provided with an electrode layer (12) and an electrolyte layer (14) and a low porosity layer provided in the substrate and/or the battery element to have a second porosity lower than the first porosity. Sizes of the pores (P) of the low porosity layer are =10 Micro to laminate a part of the battery element on the low porosity layer. An independent claim is also included for a method of manufacturing a unit cell for a solid oxide fuel cell by: (a) preparing a substrate including a portion having a first porosity; (b) laminating a battery element provided with an electrode layer and an electrolyte layer on the substrate; and (c) forming a low porosity layer in the substrate and/or battery element to have a second porosity lower than the first porosity.