Accession Number : AD0839143

Title :   LOW-COST ACID FUEL CELL STACKS.

Descriptive Note : Final rept. 13 Oct 66-31 Dec 67,

Corporate Author : INSTITUTE OF GAS TECHNOLOGY CHICAGO IL

Personal Author(s) : Randhava, S. S. ; Fleming, Donald K. ; Baker, B. S.

Report Date : AUG 1968

Pagination or Media Count : 102

Abstract : 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 ft/cell. Over 6,300 stack test hours (up to 1250 hours/test) 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 metal/sq 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 Pt/sq 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)

Descriptors :   (*FUEL CELLS, PERFORMANCE(ENGINEERING)), ELECTROLYTES, PHOSPHORIC ACIDS, FUELS, GASES, GASOLINE, CARBON MONOXIDE, ANODES(ELECTROLYTIC CELL), CATHODES(ELECTROLYTIC CELL), LEAD(METAL), SULFUR, HYDROFORMING(CHEMICAL), CATALYSTS.

Subject Categories : Electric Power Production and Distribution

Distribution Statement : APPROVED FOR PUBLIC RELEASE