Study on the Fabrication and Performance of Very Low Pressure Plasma Sprayed Large-area Porous Metal Supported Solid Oxide Fuel Cell

Abstract The high manufacturing cost and the long-term degradation are the main problems which have become a ¡°bottleneck¡± and impeded SOFC¡¯s further development. It is well known that high operating temperature is the major cause which leads to these problems, so how to reduce the operating temperature becomes a hotspot of research. It has been reported that a uniform and dense coating is hopefully prepared by using very low pressure plasma spraying (VLPPS) technology. The current study focuses on this technology for application in large-area (~100¡Á100 mm) porous metal supported solid oxide fuel cell (MS-SOFC), especially for preparation in electrolyte. It was found that the densification of the electrolyte was very well, and this could be confirmed by the open-circuit voltage (OCV) of the cell. In the temperature range of 450~650 ¡æ, the OCV of the cell fairly stabilized between 1.0 V and 1.1 V. The power density of the cell was also measured. Key words: VLPPS, large-area, MS-SOFC, electrolyte, OCV, power density