Mitsubishi Jukogyo Kabushiki Kaisha

Mitsuhiro Irino

Kiyoshi Watanabe

Koichi Takenobu

Kazumi Ogura

Masayuki Funatsu

Hiroshi Sakai

Hisao Haneda

Masaharu Minami

Tokuki Satake

Tetsuo Gora

Hitoshi Miyamoto

Masaru Ishibashi

Nobuyoshi Tomita

Masanori Nishiura

Tokuji Satake

Kazuhiro Yoshimoto

Masao Sumi

Shigeru Ohkura

A power generation system with flat fuel cells of solid electrolyte construction permits the building up of a large capacity system. There are a train of pile units of flat fuel cells of solid electrolyte disposed in a horizontally extending fuel gas duct. The gas fuel duct supplies to the train of pile units of flat fuel cells fuel gas. Each of said pile units of flat fuel cells has a horizontal flat flow path for the fuel gas disposed above each fuel-side porous electrode sheet of the fuel cell opening freely at two path ends on the opposing side faces of the pile unit. There is a horizontal flat flow path for the oxidant gas disposed beneath each oxygen-side porous electrode sheet separated from the fuel gas flow paths and each connected at two path ends to either a supply line or to an exhaust line for the oxidant gas. There is an after-burning region disposed downstream of said train of pile units of flat fuel cells, for burning at least a part of the spent fuel gas which has passed through the fuel cell using at least a part of the spent oxidant gas which has passed through the fuel cell, for generating a heat of combustion for use for preheating at least one of the feed gases to be supplied to the fuel cell.

Power generation system with flat fuel cells of solid electrolyte

A noble solid electrolyte fuel cell includes a generating layer (5), an interconnector layer (9), and a support layer (10) disposed between the generating and interconnector layers. The interconnector layer comprises a fuel electrode (6), an interconnector material (7) and an oxygen electrode (8). The support layer (10) forms a fuel passage and an oxidizer passage, and supporting rods (15, 102) for gas sealing are disposed at both ends of the support layer. A sealing film (110) is cemented to the contact surfaces of the supporting rods (15, 102) between the generating layer and the interconnector layer, and this sealing film becomes soft or half melted during the operation of the fuel cell. This construction provides improved cell performances due to better sealing of gases even under large temperature differences. The use of finer particles near the surface of the solid electrolyte only is also disclosed.

Solid electrolyte fuel cell

Growing community of inventors

Takasago, Japan

Mitsuhiro Irino