PURPOSE: To prevent the leak of gas and enhance the property of sealing between opposed shims, by providing an SiC matrix layer also on the surface of the reactant gas inlet/outlet portion of a gas electrode to which an SiC matrix is not stuck beforehand.
CONSTITUTION: The surface N' of the reactant gas inlet/outlet portion of a negative electrode N, at which a shim 2 is notched, is coated with an SiC matrix layer m1. The shim 2 is also coated with the SiC matrix layer m1. At the time of assembly of a cell, a carbon matrix layer M2 and the SiC matrix layer m1 are provided on the electrode surface N' and sealed surfaces between opposed shims 2, 3. Even if an SiC matrix is previously formed on the negative electrode N, two matrix layers can be provided between the opposed shims 2, 3 and the shim-notch-side surface of a positive electrode. The property of sealing is thus improved to prevent the leak of gas.
NISHIZAWA NOBUYOSHI
INOUE SHINYA
HIROMI KENICHI
MORIYA SHINJI
Next Patent: MANUFACTURE OF ELECTROLYTE PLATE FOR MOLTEN CARBONATE FUEL CELL