Phosphoric and electric utility fuel cell technology development. Technical progress report No. 20, for quarter ending December 1984

Technical Report · Tue Jan 01 04:00:00 EST 1985

OSTI ID:5628598

Breault, R D; Briggs, T A; Congdon, J V; Gelting, R L; Goller, G J; Luoma, W L; McCloskey, M W; Mientek, A P; O'Brien, J J; Randall, S A

1700 hours and 11 thermal cycles were accumulated on the second 10-ft/sup 2/ short stack at 120 psia and 405/sup 0/F. A subscale cell cut from 10-ft/sup 2/ electrodes in the same batch used for the second 10-ft/sup 2/ short stack accumulated over 4100 hours with performance conforming close to the E-line goal at 120 psia and 400/sup 0/F. Over 14,870 hours and 42 thermal cycles have been accumulated on the 3.7-ft/sup 2/, 30-cell short stack at 120 psia and 405/sup 0/F. A subscale cell with GSB-18 catalyst completed over 10,000 hours of operation at 120 psia, 400/sup 0/F. The full-size, 10-ft/sup 2/ stack containment vessel and reactant gas manifolds were received. The improved edge seal decreased leakage by more than 50 percent from the conventional edge seal. Cross-pressure tolerance also improved. Continuous automatic operation of the substrate forming machine was demonstrated by producing substrates at a 50 percent faster rate with high yields and low material loss. The cooler bonding cycle was significantly reduced by using a cold press (for cool down) in conjunction with the hot (bonding) press. A lower cost stainless steel tubing has been identified that could reduce cooler array cost by up to 50 percent. Assembly of the automated cell fill and assembly machine was initiated. 33 figs., 7 tabs.

• Research Organization: United Technologies Corp., South Windsor, CT (USA). Power Systems Div.
• DOE Contract Number: AC21-83FE60338
• OSTI ID: 5628598
• Report Number(s): FCR-6948P; ON: DE85014741
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
300501* -- Fuel Cells-- Design & Development
ACID ELECTROLYTE FUEL CELLS
CATALYSTS
DATA
DIRECT ENERGY CONVERTERS
ELECTRIC UTILITIES
ELECTROCHEMICAL CELLS
ELECTRODES
EXPERIMENTAL DATA
FABRICATION
FUEL CELLS
INFORMATION
MANUFACTURING
MATERIALS
NUMERICAL DATA
PERFORMANCE TESTING
PUBLIC UTILITIES
SEALS
TESTING