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Requirements for optimization of electrodes and electrolyte for the iron/chromium Redox flow cellImproved catalyzation techniques that included a pretreatment of carbon substrate and provided normalized carbon surface for uniform gold deposition were developed. This permits efficient use of different batches of carbon felt materials which initially vary significantly in their physical and surface chemical properties, as well as their electrochemical behavior. Further modification of gold impregnation technique gave the best performing electrodes. In addition to the linear sweep voltammetry, cyclic voltammetry was used to determine the effects of different activation procedures on the Cr(3)/Cr(2) Redox and H2 evolution reactions. The roles of carbon, gold and lead in the overall Redox cycle are identified. The behavior of the electrodes at both normal battery operating potentials and more extreme potentials is discussed preparing efficient and stable electrodes for the energy storage battery is implicated.
Document ID
19820017764
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Jalan, V. (Giner, Inc. Waltham, MA, United States)
Stark, H. (Giner, Inc. Waltham, MA, United States)
Giner, J. (Giner, Inc. Waltham, MA, United States)
Date Acquired
September 4, 2013
Publication Date
September 1, 1981
Subject Category
Energy Production And Conversion
Report/Patent Number
NASA-CR-165218
DOE/NASA/0097-80/1
NAS 1.26:165218
Accession Number
82N25640
Funding Number(s)
CONTRACT_GRANT: DEN3-97
CONTRACT_GRANT: DE-AI04-80AL-12726
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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