PERFORMANCE CAPABILITIES AND COMMERCIAL VIABILITY OF THE PROVEN SOFC ELECTROLYTE, CATHODE AND ANODE MATERIALS

摘要

SOFC manufacturers must select from a variety of proven electrolyte, anode and cathode materials in order to assure an optimum balance between product performance and raw material costs. Each proven electrolyte, such as yttria and scandia stabilized zirconias and gadolinium and samarium doped cerias, and proven anodes such as lanthanum strontium manganite and cobaltite ferrite has its benefits and its weaknesses. Understanding the relative trade-offs is essential. SOFC performance parameters, including ionic conductivity, operating temperature ranges and effective gas path structure, were shown to vary greatly depending on the materials chosen, as well as, each specific materials' characteristics such as surface area, particle size, doping levels and firing curves. This paper presents the results of this first comprehensive study of both the comparable performance capabilities and the costs/commercial-viability of each potential electrochemistry material, including which electrolytes perform best with which anodes and cathodes.