Study on the fabrication and performance of very low pressure plasma sprayed large-area porous metal supported solid oxide fuel cell

High manufacturing costs and long-term degradation are the main problems that have become a "bottleneck" and impeded SOFC's further development. It is well known that a high operating temperature is the major cause that leads to these problems. As such, reducing the operating temperature becomes a hotspot of research. It has been reported that a uniform and dense coating can be prepared by using very low pressure plasma spraying (VLPPS) technology. The current study focuses on VLPPS for application in large-area (∼100× 100 mm) porous metal supported solid oxide fuel cell (MS-SOFC), especially for the preparation of the electrolyte. It was found that the densification of the electrolyte was very good, as confirmed by the open-circuit voltage (OCV) of the cell. In the temperature range of 550∼750°C, the OCV of the cell stabilized between 1.05 V and 1.1 V. The power density of the cell was also measured.