ELECTRICAL PULSATIONS OF PROPANE-AIR DIRECT OXIDATION FUEL CELL.

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Abstract:

Self-induced cycling of a propane-air direct oxidation fuel cell was observed. The fuel cell under investigation at 175C comprised a set of 5-516 inches x 5-516 inches AA-2 electrodes with a phosphoric acid filled TA-1 matrix. It was utilized as an integral portion of a submodule with water recovery for fuel humidification. Air flow was at 1.5 x STOIC. Cycling, which was associated only with the anodic oxidation of propane, resulted in a rejuvenation and stabilization of the active electrode surfaces. It may be applicable as a means of increasing both performance and life of the ultra-simple direct oxidation fuel cell system presently under development at USAECOM. The inception of cycling, which was not of uniform periodicity, occurred under conditions related to propane concentration, apparent current density and degree of catalyst deactivation. A mechanistic interpretation of the cycling phenomena has been postulated the coupling of reactions necessary for oscillatory behavior of this type is between a propane diffusion-adsorption step and platinum anodic oxidation-reduction. Author

Author(s):
Chutoransky, Peter, Jr
Author Organization(s):
ARMY ELECTRONICS COMMAND FORT MONMOUTH N J
Descriptive Note:
Research and development technical rept.,
Pagination:
0039

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
ECOM-3183
Task Number(s):
1T662705A05304
Project Number(s):
DA-1-T-662705-A-053
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
(*POWER SUPPLIES, FUEL CELLS), (*FUEL CELLS, REGENERATION), PERIODIC VARIATIONS, REACTION KINETICS, OXIDATION, CATALYSTS, PROPANE, DISPROPORTIONATION
Field(s)/Group(s):
Electric Power Production and Distribution
Keyword(s):
DIRECT OXIDATION FUEL CELLS
Report Date:
1969 Oct 01