| 摘要 |
The invention provides a solid oxide fuel cell stack comprising two or more solid oxide fuel cells, wherein each solid oxide fuel cell is a tubular fuel cell, comprising an inner electrode tube,an electrolyte layer coaxially surrounding the inner electrode, and an outer electrode layer coaxially surrounding the electrolyte layer, wherein one of the inner electrode tube and the outer electrode layer is an anode and the other is a cathode. Each solid oxide fuel cell is electrically connected to an adjacent solid oxide fuel cell, said connected fuel cells forming a pair. In each pair of solid oxide fuel cells at least one of the fuel cells includes an access portion, said portion comprising a part of the tubular fuel cell where the inner electrode tube is not covered by the electrolyte layer and the outer electrode layer, such that an electrical contact can be made with the inner electrode tube at this portion. In each pair of solid oxide fuel cells the electrical connection is from the access portion of one tubular fuel cell to the outer electrode layer of the other tubular fuel cell. The electrical connection is made via an interconnect wire, the wire comprising a first section that electrically contacts the inner electrode tube of one tubular fuel cell at the access portion thereof, said first section extending around the circumference of the inner electrode tube and being secured thereto, and the wire comprising a second section that electrically contacts the outer electrode layer of the other tubular fuel cell, said second section extending along a portion of the outer electrode layer and being secured thereto. |
