# US 2008/0187806 A1 · Solid oxide fuel cell

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- Number: US 2008/0187806 A1
- Document ID: US20080187806A1
- Status: Published application
- Kind: A1
- Application number: 11/802,344
- Filed: 2007-05-22
- Published: 2008-08-07
- Earliest claimed: 2006-05-23
- Assignees: Shinko Electric Industries Co., Ltd.
- Inventors: Michio Horiuchi; Yasue Tokutake; Shigeaki Suganuma; Jun Yoshiike; Fumimasa Katagiri
- Web page: https://patentgrep.com/patent/US20080187806A1

## CPC

- H01M 8/2432: Grouping of unit cells of planar configuration
- H01M 4/8885: {Sintering or firing}
- H01M 8/2457: with both reactants being gaseous or vaporised
- H01M 8/247: Arrangements for tightening a stack, for accommodation of a stack in a tank or for assembling different tanks
- H01M 8/2484: characterised by external manifolds
- H01M 4/9016: {Oxides, hydroxides or oxygenated metallic salts}
- Y02E 60/50: Fuel cells
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

To an internal vessel that houses cells of a solid oxide fuel cell, an external vessel is further disposed. In the internal vessel, a plurality of planar cells is disposed vertically with a gap between the cells, a mixed gas of a fuel and air is descended from top down through the gap having a predetermined width between the cells, and, at a bottom portion of the housing space, the mixed gas is burned to generate electricity.

## Claims

### Claim 1

A single chamber solid oxide fuel cell, comprising:
a cell housing in which a mixed gas of fuel and air is flowed, and
a plurality of planar cells disposed, in the cell housing space of the cell housing, in parallel and with a predetermined gap between the cells, wherein
the mixed gas flows the gap and is burned at a downstream portion of a flow of the mixed gas in the housing space to generate electricity.

### Claim 2 (depends on 1)

The single chamber solid oxide fuel cell according to claim 1, wherein
the plurality of cells is disposed with electrodes of same kind faced to each other.

### Claim 3 (depends on 1)

The single chamber solid oxide fuel cell according to claim 1, wherein
the gap between the cells is equal to or less than a quenching distance to the mixed gas.

### Claim 4 (depends on 1)

The single chamber solid oxide fuel cell according to claim 1, further comprising:
an internal vessel that houses the cells and is made of a heat-insulating material; and
an external vessel that houses the internal vessel and is made of a heat-insulating material, wherein
a gap is disposed between the internal and external vessels to exhaust an exhaust gas.

### Claim 5 (depends on 4)

The single chamber solid oxide fuel cell according to claim 4, wherein
on an inner wall of the internal vessel housing the cells, a highly conductive material layer is formed.

### Claim 6 (depends on 1)

The single chamber solid oxide fuel cell according to claim 1, wherein
the plurality of cells is electrically connected between electrodes of different kind of adjacent cells to form a series connection of cells as a whole.

### Claim 7 (depends on 1)

The single chamber solid oxide fuel cell according to claim 1, wherein
the plurality of cells is electrically connected between electrodes of same kind of adjacent cells to form a parallel connection of cells as a whole.

### Claim 8 (depends on 1)

The single chamber solid oxide fuel cell according to claim 1, wherein
groups of electrical connection between electrodes of same kind of adjacent cells are connected in series.

### Claim 9 (depends on 1)

The single chamber solid oxide fuel cell according to claim 1, wherein
groups of electrical connection between electrodes of different kind of adjacent cells are connected in parallel.