ソケット型によるT-MCFCスタック化の検討

抄録

We have been developing High Functional Direct Carbonate Fuel Cell (HF-DCFC) composed of Molten Salts Gasification and Tubular Molten Carbonate Fuel Cell (T-MCFC), can use an organic waste as fuel directly. The previous study has established the manufacturing method of a T-MCFC single cell supported by a stainless tube of φ9. Aiming at commercialization of HF-DCFC, T-MCFC should be stacked to output a high power. We proposed that the socket type T-MCFC stack was composed of connecting several single cells supported by alumina tube to avoid short circuit. However, because the crack was caused in both electrodes of this socket type, it was able hardly to generate electricity due to gas cross leakage through these cracks. These failure factors were confirmed by manufacturing the stack with a stainless support tube of φ19. We have developed a new stack composed of connecting two single cells supported by stainless tube and alumina-joint.