Abstract
This article flows the results of an exploratory investigation of a 100 W Solid Oxide Fuel Cell (SOFC) stack conduct and to assess its execution in the capacity of the repetition test with various temperatures in the wake of changing the mode to a Solid Oxide Electrolysis Cells (SOEC) and Co-Electrolysis. The 100 W stack comprises of 6 electrodes upheld cells, which were installed at the SOFC stack bench. This bench was intended to test short stacks in the power range 20-200 W, at the Water and Fuel Research Institute, KACST. In this examination, the 100 W SOFC operated at 650 - 750 degrees C with H-2 - air, to research the impact of reiteration on the execution of SOFC stack at diverse temperatures with the difference in the mode (SOFC-SOEC-SOFC). From the main result, the stack temperature assumed an imperative part in the execution of the stack. The maximum current density was 400 mA cm(2) (at an average cell voltage of 0.75 V) and the maximum power was 90 W, at the stack operating temperature of 750 degrees C. The result of the 6 cell stack was influenced by a reiteration test, where the cuurent was 20 A toward the start of the test and diminished to 15A at 750 degrees C. It might be because of the debasement in a few cells' execution, which is because of expanding the area specific resistance (ASR) which was in the scope of 0.50 - 0.80 Omega cm(2). And furthermore, the carbon deposition processes on the anode side surface.