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Internal reforming type fuel cell
| Details |
Inventors: Matsumura, Mitsuie; Okada, Tatsunori; Gonjo, Yoshihide;
Assignee: Mitsubishi Denki Kabushiki Kaisha (Tokyo, JP)
Primary Examiner: Skapars; Anthony
Assistant Examiner:
Attorney, Agent or Firm: Leydig, Voit & Mayer
An internal reforming type fuel cell comprising, as reforming regions packed with a reforming catalyst, a first reforming region which is thermally held in contact with a unit fuel cell and which does not adjoin a fuel gas side electrode and a second reforming region which adjoins the fuel gas side electrode. Part of a fuel gas externally supplied is reformed in the first reforming region, whereupon the partly reformed fuel gas is supplied into the second reforming region. |
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DETAILED DESCRIPTION What is claimed is: 1.
An internal reforming type fuel cell comprising: a first reforming region which receives a reforming catalyst therein, which is thermally held in contact with unit fuel cells, which is isolated from fuel gas side electrodes and in which only reformation of a fuel gas is carried out, and a second reforming region which receives the reforming catalyst therein, which adjoins the fuel gas side electrodes and in which an electrochemical reaction is carried out in the fuel gas side electrodes while the partly reformed fuel gas fed from said first reforming region is being reformed.
2.
An internal reforming type fuel cell according to claim 1, wherein said first reforming region is fed with part of the fuel gas supplied externally and reforms it into the fuel gas containing hydrogen as its principal ingredient, and said second reforming region is fed with both the remainder of the fuel gas supplied and the fuel gas reformed in said first reforming region.
3.
An internal reforming type fuel cell according to claim 1, wherein said first reforming region is defined by cooling plates coupled to the unit fuel cells, and said second reforming region is defined by a fuel gas side gas passage.
4.
An internal reforming type fuel cell according to claim 1, wherein said internal reforming type fuel cell is an internal-reforming molten-carbonate type fuel cell.
Description:
BACKGROUND OF THE INVENTION This invention relates to an internal reforming type fuel cell.
More particularly, it relates to an internal reforming type fuel cell which is supplied with a fuel gas reformed by a catalyst and an oxidizing gas, to cause electrochemical reactions.
FIG.
1 shows an internal-reforming molten-carbonate type fuel cell (hereinbelow, simply termed `fuel cell`) in a prior art.
In the figure, numeral 1 designates an electrolyte matrix, numeral 2 a fuel gas side electrode, and numeral 3 an oxidizing gas side electrode.
Numeral 4 indicates a fuel gas side perforated plate which supports the fuel gas side electrode 2 and which separates a reforming catalyst to be described later, from the fuel gas side electrode 2
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Fuel Cells 
