NASA Redox Storage System Development Project. Final report
The Redox Storage System Technology Project was jointly supported by the US Department of Energy and NASA. The objectives of the project were to develop the Redox flow battery concept and to prove its technical and economic viability. The iron and chromium redox couples were selected as the reactants. Membranes and electrodes were developed for the original mode of operating at 25/sup 0/C with the reactants separated by an ion-exchange membrane. Analytical capabilities and system-level operating concepts were developed and verified in a 1-kW, 13-kWh pre-prototype system. A subsequent change was made in operating mode, going to 65/sup 0/C and using mixed reactants. New membranes and a new electrode catalyst were developed, resulting in single cell operation as high as 80 mA/cm/sup 2/ with energy efficiencies greater than 80%. Studies indicate a likely system cost of about $75/kWh. Standard Oil of Ohio (Sohio) has undertaken further development of the Redox system. An exclusive patent license was obtained from NASA by Sohio. Transfer of Redox technology to Sohio is supported by the NASA Technology Utilization Office. This report covers the full duration of the project.
- Research Organization:
- NASA Lewis Research Center, Cleveland, OH (United States)
- DOE Contract Number:
- AI04-80AL12726
- OSTI ID:
- 6472995
- Report Number(s):
- DOE/NASA/12726-24; NASA-TM-83677; ON: DE85000993
- Country of Publication:
- United States
- Language:
- English
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