Half cell of solid oxide fuel cell, fuel cell and their manufacturing methods

固体氧化物燃料电池的半电池、燃料电池及其制作方法

Abstract

本发明涉及固体氧化物燃料电池的半电池、燃料电池及其制作方法。所述半电池依次包括电解质层、可选的功能层和支撑层,其中所述电解质层的外表面在微米尺度上是平整的,优选所述外表面具有亚微米或者纳米微观结构,还优选所述外表面具有亚微米或者纳米级别的突起、起伏或枝状结构;优选所述电解质层是在载带表面上使用喷雾干燥法形成的,从而使电解质生坯以载带为模板,复制载带表面的微观形貌,所述载带的表面在微米尺度上是平整的,优选载带表面经过再加工和修饰,形成有亚微米或者纳米微观结构,从而使电解质层与载带接触的表面在烧结后形成亚微米或者纳米微观结构。
The invention relates to a half cell of solid oxide fuel cell, a fuel cell and their manufacturing methods. The half cell orderly comprises an electrolyte layer, an optional functional layer and a supporting layer. The outer surface of the electrolyte layer is flat in a micrometer level. Preferably, the outer surface has a submicron or nanometer microstructure, or has a submicron or nanometer raised, undulating or branched structure. Preferably, the electrolyte layer is formed on the surface of a carrier tape by a spray-drying method so that an electrolyte green compact utilizes the carrier tape as a template and copies microscopic morphology of the surface of the carrier tape. The surface of the carrier tape is flat in a micrometer level. Preferably, through processing and modification, the surface of the carrier tape forms a submicron or nanometer microstructure so that the surface of the electrolyte layer contacting with the carrier tape forms a submicron or nanometer microstructure after sintering.

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