LOW-COST ACID FUEL CELL STACKS.
Final rept. 13 Oct 66-31 Dec 67,
INSTITUTE OF GAS TECHNOLOGY CHICAGO IL
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This project is divided into two tasks -- testing of low-temperature immobilized phosphoric acid fuel cell stacks and feasibility testing of a breadboard system starting with raw CITE fuel or combat gasoline and converting it to electricity using a fuel cell stack of 0.7 sq ftcell. Over 6,300 stack test hours up to 1250 hourstest were accumulated at temperatures of 200, 250, and 300F on fuels containing 0.2 and 3.0 CO. The oxidant was air. Commercially available anodes contained 2, 5, 9, and 15 mg noble metalsq cm. Anodes with 5 mg or greater loading operated satisfactory at 200F, but the 2 mg anodes required higher temperature to avoid poisoning. Cathodes of 5 and 9 mg Ptsq cm operated similarly. The breadboard system was operated for 100 hours, proving the feasibility of the concept. The breadboard subsystem included 1 lead removal for gasoline, 2 sulfur removal, 3 low-temperature reforming and 4 operation of a fuel cell stack. Author
- Electric Power Production and Distribution