This diagram shows
the arrangement of components in the tubular solid oxide fuel cell. Air is channeled into
the cell stack and through the center of each tube. The innermost layer of the tube is
the cell cathode and is surrounded by the electrolyte (middle layer). Fuel flows over
the outer layer that serves as the anode.
Bundles of tubes are joined together into modules to make a fuel cell
stack. The modular nature of fuel cells is one of their strengths, because power
plants can add modules as they need them and keep unused capacity to a minimum
If you have information about this fuel cell image, or SOFC
technology in general, please fill out the Collecting History questionnaire
accessible through the link at the top of the previous page.
Return to text
©2001 Smithsonian Institution