CATHODE MATERIALS AND PERFORMANCE IN HIGH-TEMPERATURE ZIRCONIA ELECTROLYTE FUEL CELLS

The high-temperature zirconia electrolyte fuel cell is materials-limited in both its performance and its range of potential application. The most sig nificant materials limitations and problems occur with the cathode. Cathode materials must satisfy four general criteria: (i) chemical, (ii) electrochemi cal, (iii) mechanical, and (iv;) economical. In this paper, the interaction be tween cathode materials and cell performance is considered quantitatively for three general classes of cathodes, viz., metals, oxides with embedded current collectors, and electronically conducting oxides. © 1969, The Electrochemical Society, Inc. All rights reserved.