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Title: Redox flow cell energy storage systems

Abstract

NASA-Redox energy storage systems are being developed for ultimate use in stand-alone village power applications and distributed energy storage installations for electric utility service. In the former application, either solar photovoltaic arrays or wind turbines supply the primary power and an electrochemical storage system stores energy during times of excess power generation capability and delivers energy during times of insufficient power generation. Various electrochemical and non-electrochemical storage concepts are under consideration for these applications. Life cycle costs, simplicity of operation, complexity and state of technology are all determining factors in selecting systems for these important storage applications. NASA--Redox systems are electrochemical storage devices that use two fully soluble Redox couples, anode and cathode fluids, as active electrode materials separated by a highly selective ion exchange membrane. The reactants are contained in large storage tanks and pumped through a stack of Redox flow cells where the electrochemical reactions (reduction and oxidation) take place at porous carbon felt electrodes. A string or stack of these power producing cells is connected in series in a bipolar manner. Redox energy storage systems promise to be inexpensive and possess many features that provide for flexible design, long life, high reliability and minimal operation and maintenancemore » costs. These features include independent sizing of power and storage capacity requirements and inclusion within the cell stack of a cell that monitors the state of charge of the system as a whole, and a rebalance cell which permits continuous correction to be made for minor side reactions that would tend to result in the anode fluid and cathode fluids becoming electrochemically out of balance.« less

Authors:
Publication Date:
Research Org.:
National Aeronautics and Space Administration, Cleveland, OH (USA). Lewis Research Center
OSTI Identifier:
6233866
Report Number(s):
DOE/NASA/1002-79/3; NASA-TM-79143; CONF-790611-2
DOE Contract Number:  
EC-76-A-31-1002
Resource Type:
Conference
Resource Relation:
Conference: AIAA terrestrial energy systems conference, Orlando, FL, USA, 4 Jun 1979
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION; 20 FOSSIL-FUELED POWER PLANTS; ENERGY STORAGE SYSTEMS; REDOX FUEL CELLS; ENERGY STORAGE; CAPACITY; ELECTRIC UTILITIES; OFF-PEAK ENERGY STORAGE; OPERATION; REMOTE AREAS; SOLAR CELL ARRAYS; WIND TURBINES; DIRECT ENERGY CONVERTERS; ELECTROCHEMICAL CELLS; FUEL CELLS; PHOTOVOLTAIC POWER PLANTS; POWER PLANTS; PUBLIC UTILITIES; REGENERATIVE FUEL CELLS; SOLAR POWER PLANTS; STORAGE; 300504* - Fuel Cells- Applications; 200107 - Fossil-Fueled Power Plants- Off-Peak Energy Storage- (1980-)

Citation Formats

Thaller, L H. Redox flow cell energy storage systems. United States: N. p., 1979. Web.
Thaller, L H. Redox flow cell energy storage systems. United States.
Thaller, L H. Mon . "Redox flow cell energy storage systems". United States.
@article{osti_6233866,
title = {Redox flow cell energy storage systems},
author = {Thaller, L H},
abstractNote = {NASA-Redox energy storage systems are being developed for ultimate use in stand-alone village power applications and distributed energy storage installations for electric utility service. In the former application, either solar photovoltaic arrays or wind turbines supply the primary power and an electrochemical storage system stores energy during times of excess power generation capability and delivers energy during times of insufficient power generation. Various electrochemical and non-electrochemical storage concepts are under consideration for these applications. Life cycle costs, simplicity of operation, complexity and state of technology are all determining factors in selecting systems for these important storage applications. NASA--Redox systems are electrochemical storage devices that use two fully soluble Redox couples, anode and cathode fluids, as active electrode materials separated by a highly selective ion exchange membrane. The reactants are contained in large storage tanks and pumped through a stack of Redox flow cells where the electrochemical reactions (reduction and oxidation) take place at porous carbon felt electrodes. A string or stack of these power producing cells is connected in series in a bipolar manner. Redox energy storage systems promise to be inexpensive and possess many features that provide for flexible design, long life, high reliability and minimal operation and maintenance costs. These features include independent sizing of power and storage capacity requirements and inclusion within the cell stack of a cell that monitors the state of charge of the system as a whole, and a rebalance cell which permits continuous correction to be made for minor side reactions that would tend to result in the anode fluid and cathode fluids becoming electrochemically out of balance.},
doi = {},
url = {https://www.osti.gov/biblio/6233866}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1979},
month = {1}
}

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