ELECTROCHEMICAL REACTION SINGLE CELL AND ELECTROCHEMICAL REACTION CELL STACK

To suppress a damage to an electrolyte layer owing to a stress caused in the electrolyte layer by the difference in thermal expansion between a particular electrode and an electrolyte layer and the like.SOLUTION: An electrochemical reaction single cell comprises: a solid oxide-containing electrolyte...

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Hauptverfasser: ONO TATSUYA, KAKINUMA YASUO, ISHIDA AKIRA, TAKEUCHI MIZUE
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:To suppress a damage to an electrolyte layer owing to a stress caused in the electrolyte layer by the difference in thermal expansion between a particular electrode and an electrolyte layer and the like.SOLUTION: An electrochemical reaction single cell comprises: a solid oxide-containing electrolyte layer; and an air electrode and a fuel electrode which are opposed to each other in a first direction over the electrolyte layer. In the electrochemical reaction single cell, a plurality of bottomed recessed portions are formed in a particular surface of the electrolyte layer on the side of a particular electrode which is at least one of the air and fuel electrodes. The inside of the recessed portion makes a cavity.SELECTED DRAWING: Figure 6 【課題】特定電極と電解質層との熱膨張差等に起因して電解質層に生じた応力による電解質層の損傷を抑制すること。【解決手段】電気化学反応単セルは、固体酸化物を含む電解質層と、電解質層を挟んで第1の方向に互いに対向する空気極および燃料極と、を備えている。電気化学反応単セルでは、電解質層のうち、空気極と燃料極との少なくとも一方である特定電極側の特定表面には、有底の複数の凹所が形成されている。凹所は、内部が空洞である。【選択図】図6