A
solid oxide fuel cell (or
SOFC) is an
electrochemical conversion device that produces electricity directly from
oxidizing a
fuel.
Fuel cells are characterized by their electrolyte material; the SOFC has a solid oxide or
ceramic electrolyte. Advantages of this class of fuel cells include high efficiency, long-term stability, fuel flexibility, low emissions, and relatively low cost. The largest disadvantage is the high
operating temperature which results in longer start-up times and mechanical and chemical compatibility issues.