Facile fabrication of the robust and high performance metal-supported solid oxide fuel cell using a directly assembled approach

Metal-supported solid oxide fuel cells (MS-SOFCs) exert a critical influence on achieving efficient energy utilization and promoting global sustainable development, due to their high mechanical strength, low costs, and reliable stack sealing. However, traditional fabrication methods for MS-SOFCs are relatively complex, involving high temperature sintering of electrodes and metal supports, which can lead to grain growth and oxidation of the metal support. Herein, a fabrication process is proposed for MS-SOFCs using a directly assembled method where the electrode-metal co-sintering process is not necessary. The directly assembled interfaces are activated and bonded by applying polarization currents. The single cell exhibits a maximum power density of 0.79 W cm −2 at 800 °C and demonstrates superior operational stability at 750 °C. The findings shed new light on the rational fabrication of MS-SOFCs through the introduction of a directly assembled method.