Lateral-striped solid-oxide fuel cell

Abstract

Disclosed is a lateral-striped solid oxide fuel cell having a current-folding structure. In the lateral-striped solid oxide fuel cell, a plurality of solid-oxide fuel cells are arranged at a spacing. Each solid-oxide fuel cell includes an electrically insulating substrate having fuel passages at its inside and a pair of front and back faces and a pair of right and left side faces in parallel withthe fuel passages at its outside, and in which a fuel-electrode layer side interconnector, a fuel-electrode layer, an electrolyte layer, an air-electrode layer and an air-electrode layer side interconnector are laminated sequentially in the recited order on the paired front and back faces and individually in parallel with the fuel passages. The plural adjacent cells are electrically connected in series individually through the interconnectors. The lateral-striped solid-oxide fuel cell is made into the current-folding structure by arranging the fuel-electrode layer side interconnectors, the electrolyte layers and the air-electrode layer side interconnectors, which constitute the paired front and back cells positioned at the most end portions on the fuel exit side, in an extending manner onthe two right and left sides of the electrically insulating substrate.

Description

technical field [0001] The present invention relates to a lateral-striped solid oxide fuel cell, and more specifically, to a lateral-striped solid oxide fuel cell on opposite surfaces of a porous electrically insulating substrate having a fuel flow path inside. A horizontally striated solid oxide fuel cell formed by disposing a plurality of solid oxide fuel cell units, and a porous electrically insulating substrate having an air flow path inside is arranged in a horizontally striated manner on both surfaces opposite to each other. A cross-ribbed solid oxide fuel cell in which a plurality of solid oxide fuel cells are arranged. The term for a solid oxide fuel cell unit is hereinafter referred to simply as a “unit” as appropriate. Background technique [0002] The horizontal stripe type solid oxide fuel cell is a type of fuel cell in which multiple cells are arranged in a horizontal stripe shape, and the structure of the cells is: a fuel electrode layer and an air electrode l...

AI Technical Summary

Problems solved by technology

However, in the type using the metal belt in this way, there is concern about the reliability of the metal belt in terms of disconnection and the like due to the oxidation of the metal caused by the stripe type solid oxide type. The heat cycle caused by the repeated operation and stop of the fuel cell, and since the metal belt is exposed on the side of the air flow which is an oxidizing atmosphere, there are also concerns about the danger of a short circuit caused by the metal belt falling off and contact with the outside. sex

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