SOLID OXIDE FUEL CELL TESTING: RESULTS AND INTERPRETATION

摘要

Problems in analysis of solid oxide fuel cell (SOFC) test data are described. Tests and analysis should be conducted in a way that allow comparison between results of different types of tests and results from different sources. A major point in this context is the correction for fuel and oxidant utilization. Easy approximate methods for this are presented. The experimental set-ups for SOFC tests at Riso are described and problems involved in practical tests are addressed for two examples. It is shown that in case the open circuit potential is much below the theoretical electromotive force, performance measures like the area specific resistance as derived from the slope of the i,V-curve may be misleading. In this case it is of special importance to assure that the temperature of the cell is measured correctly.