LIGHTWEIGHT HIGH-POWER ELECTROCHEMICAL ENERGY STORAGE SYSTEMS FOR SATELLITES

Award Information
Agency:
Department of Defense
Branch
Air Force
Amount:
$50,000.00
Award Year:
1990
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Award Id:
12658
Agency Tracking Number:
12658
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Rte 5 - Box 946a, College Station, TX, 77840
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Oliver J Murphy
(409) 846-4131
Business Contact:
() -
Research Institute:
n/a
Abstract
ELECTRICAL ENERGY STORAGE FOR SATELLITES IS PROVIDED BY RECHARGEABLE NI-CD, OR MORE COMMONLY AT PRESENT, BY RECHARGEABLE NI-H2 BATTERY SYSTEMS. WHILE THESE WORK RATHER WELL FOR GEOSYNCHRONOUS ORBIT (GEO) APPLICATIONS, THEIR PREDICTED PERFORMANCE CHARACTERISTICS ARE LESS THAN SATISFACTORY FOR THE MORE DEMANDING LOW EARTH ORBIT (LEO) SATELLITE APPLICATIONS. IN TERMS OF POWER OUTPUT PER UNIT WEIGHT, THERMAL AND FLUID MANAGEMENT AND RELIABILITY, A PROTON EXCHANGE MEMBRANE (PEM)-BASED FUEL CELL-ELECTROLYZER COMBINATION IS THE MOST ATTRACTIVE OPTION FOR THE LATTER SATELLITE APPLICATIONS. THE PRESENT PROPOSAL FOCUSES ON A COMPLETE SYSTEM FEASIBILITY ANALYSIS, A PREDICTION OF PERFORMANCE CHARACTERISTICS AND A PROOF-OF-PRINCIPLE DESIGN FOR A PEM-BASED COUPLED SYSTEM. IN THE DESIGN PROPOSED IN THIS PROPOSAL FOR A PEM FUEL CELL, INCORPORATING A BIPOLAR PLATE OF KUREKA. KE-1 TYPE WITH A 100 MICROMETER PEM MEMBRANE, A PLATINUMBASED CATALYST LOADING OF 10 MG/CM2 AND EVAPORATIVE COOLING VIA WATER INJECTED INTO THE ANODE COMPARTMENT, A CELL WITH A STACK POWER DENSITY CORRESPONDING TO 0.23 LB/KW IS OBTAINABLE BASED ON EXISTING CELL POTENTIAL-CURRENT DENSITY DATA. IN THE WORK PROPOSED METHODS ARE OUTLINED TO FURTHER INCREASE THE POWER DENSITIES IN PEM-BASED FUEL CELLS (AND ELECTROLYZERS) WHICH ARE NECESSARY TO REDUCE WEIGHT AND VOLUME OF OVERALL SYSTEMS.

* information listed above is at the time of submission.

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