Solid oxide fuel cells

Abstract

A solid oxide fuel cell in which one or more cell units of the fuel cell are disposed in proximity to a flame, generated upon combustion of a gaseous fuel material, and is exposed to the flame, thereby generating electricity. The fuel cell is provided with a combustion chamber for combusting the fuel material in the form of a cylinder, a wall of the cylindrical combustion chamber is defined by the cell units of the fuel cell, and the cell units comprise a substrate consisting of a solid electrolyte, an anode layer formed on a combustion chamber side of the substrate and a cathode layer formed on another side of the substrate opposed to the anode layer. The wall of the combustion chamber has a composite wall structure consisting of at least two wall layers wherein air is guided through an air-guiding path formed between the adjacent wall layers, the innermost wall layer adjacent to the combustion chamber is at least constituted from the cell units, and atmospheric air is supplied to combustion chamber after flowing through the air-guiding path.

Dependencies are inferred from the claim text.