Compact and Lightweight Solid-State Electrochemical Sensor for Sulfur Oxide

The sulfur content of JP-8 fuel varies in a wide range up to 3000 ppm and it is detrimental to a fuel cell based auxiliary power units. The concentration of sulfur must be closely monitored to allow the APU to fully function within specification. A highly selective solid-state electrochemical sensor is suitable for continuous monitoring of sulfur dioxide which is formed by conversion of all the sulfur species in the fuel at the exhaust of a fuel processor. Materials & Systems Research, Inc. has developed a unique ceramic processing technology that allows synthesis of a stable solid-state fast ion conducting material. Solid electrolyte sensors will be fabricated in Phase-I and they will be tested for demonstration of the required sensitivity, selectivity, and stability.