Phosphoric and electric utility fuel cell technology development. Technical progress report No. 14 for quarter ending June 1984

Technical Report · Sun Jan 01 04:00:00 EST 1984

OSTI ID:5528383

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

Over 1500 hours and 15 thermal cycles were accumulated on the first 10-ft/sup 2/, 29-cell stack at 120 psia and 450/sup 0/F. Assembly of the second 10-ft/sup 2/ short stack was completed and testing was initiated. Over 11,700 hours and 32 thermal cycles have been accumulated on the 3.7-ft/sup 2/, 30-cell stack at 120 psia and 405/sup 0/F. Catalyst selected for the current 10-ft/sup 2/ short stack performed at the E-line goal for over 5000 hours at 120 psia and 400/sup 0/F in a shop-made subscale cell. This test fulfills the 5000 hour catalyst endurance goal. Two subscale cells cut from 10-ft/sup 2/ electrodes from the same batch as used in the second 10-ft/sup 2/ short stack are performing above E-line after 1000 hours. The cross pressure evaluation of two 3.7-ft/sup 2/, seven cell ..delta..P rigs was completed. Automated equipment to increase processing rates and reduce manpower was used to conduct the substrate treating, catalyst deposition, matrix application and trimming operations of the 10-ft/sup 2/ electrodes for the next short stack. Work was initiated on improved edge seals. Initial trials with new powder transfer equipment indicate a 20 fold increase in powder transfer rate to the substrate forming machine. The fourth mold trial of separator plates was completed. Edge waves in separator plates were reduced with increased restraining loads. 33 figs., 10 tabs.

• Research Organization: United Technologies Corp., South Windsor, CT (USA). Power Systems Div.
• DOE Contract Number: AC21-83FE60338
• OSTI ID: 5528383
• Report Number(s): DOE/FE/60338-14; ON: DE85015500
• Country of Publication: United States
• Language: English

Related Subjects

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