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Record Details

Record 1 of 10191
The TMI regenerable solid oxide fuel cell
Author and Affiliation:
Cable, Thomas L.(Technology Management, Inc., Cleveland, OH, United States)
Abstract: Energy storage and production in space requires rugged, reliable hardware which minimizes weight, volume, and maintenance while maximizing power output and usable energy storage. These systems generally consist of photovoltaic solar arrays which operate during sunlight cycles to provide system power and regenerate fuel (hydrogen) via water electrolysis; during dark cycles, hydrogen is converted by the fuel cell into system. The currently preferred configuration uses two separate systems (fuel cell and electrolyzer) in conjunction with photovoltaic cells. Fuel cell/electrolyzer system simplicity, reliability, and power-to-weight and power-to-volume ratios could be greatly improved if both power production (fuel cell) and power storage (electrolysis) functions can be integrated into a single unit. The Technology Management, Inc. (TMI), solid oxide fuel cell-based system offers the opportunity to both integrate fuel cell and electrolyzer functions into one unit and potentially simplify system requirements. Based an the TMI solid oxide fuel cell (SOPC) technology, the TMI integrated fuel cell/electrolyzer utilizes innovative gas storage and operational concepts and operates like a rechargeable 'hydrogen-oxygen battery'. Preliminary research has been completed on improved H2/H2O electrode (SOFC anode/electrolyzer cathode) materials for solid oxide, regenerative fuel cells. Improved H2/H2O electrode materials showed improved cell performance in both fuel cell and electrolysis modes in reversible cell tests. ln reversible fuel cell/electrolyzer mode, regenerative fuel cell efficiencies (ratio of power out (fuel cell mode) to power in (electrolyzer model)) improved from 50 percent (using conventional electrode materials) to over 80 percent. The new materials will allow the TMI SOFC system to operate as both the electrolyzer and fuel cell in a single unit. Preliminary system designs have also been developed which indicate the technical feasibility of using the TMI SOFC technology for space applications with high energy storage efficiencies and high specific energy. Development of small space systems would also have potential dual-use, terrestrial applications.
Publication Date: Apr 01, 1995
Document ID:
19950023844
(Acquired Dec 28, 1995)
Accession Number: 95N30265
Subject Category: ENERGY PRODUCTION AND CONVERSION
Coverage: Abstract Only
Document Type: Conference Paper
Publication Information: NASA. Lewis Research Center, Space Electrochemical Research and Technology. Abstracts; p 25
Publisher Information: United States
Financial Sponsor: NASA; United States
Organization Source: Technology Management, Inc.; Cleveland, OH, United States
Description: 1p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: No Copyright
NASA Terms: ELECTRODE MATERIALS; ENERGY STORAGE; HYDROGEN; PHOTOVOLTAIC CELLS; REGENERATIVE FUEL CELLS; SOLAR ARRAYS; WATER; AEROSPACE SYSTEMS; CATHODIC COATINGS; EFFICIENCY; FUEL SYSTEMS; RELIABILITY; TECHNOLOGY UTILIZATION; WATER SPLITTING
Imprint And Other Notes: In NASA. Lewis Research Center, Space Electrochemical Research and Technology. Abstracts p 25 (SEE N95-30255 10-44)
Availability Source: Other Sources
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