Investigations on Single Chamber Solid Oxide Fuel Cells: From Single Cell to Micro-stack

摘要

In this paper, our research results on single chamber solid oxide single cells and micro-stacks are presented. In single cell investigations, both electrolyte-supported (ES) and anode-supported (AS) cells were studied. The primary work focused on reducing the inner resistance, improving the open circuit voltage (OCV) as well as power density, and enhancing the operation stability. On 2-cell short stacks, our investigation focused on AS type stacks with different configurations and the structure parameter effect. To develop useful SC-SOFC system, more stack configurations have been designed and tested. Many efforts have been made to optimize the gas flow field of multi-cell micro-stacks to enhance OCV, power output and fuel utilization. Configurations of SC-SOFC stacks, including star-type, array type and micro-stack with root gas tubes have been designed and tested successfully.