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Record Details

Record 32 of 8201
Effects of Na2MoO4 and Na2WO4 on molybdenum and tungsten electrodes for the alkali metal thermoelectric converter (AMTEC)
Author and Affiliation:
Williams, R. M.(Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA, United States)
Wheeler, B. L.(Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA, United States)
Jeffries-Nakamura, B.(Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA, United States)
Loveland, M. E.(Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA, United States)
Bankston, C. P.(California Institute of Technology, Jet Propulsion Laboratory, Pasadena, United States)
et al.
Abstract: The effects of adding Na2MoO4 and Na2WO4 to porous Mo and W electrodes, respectively, on the performance and impedance characteristics of the electrodes in an alkali metal thermoelectric converter (AMTEC) were investigated. It was found that corrosion of the porous electrode by Na2MoO4 or Na2WO4 to form Na2MO3O6 and WO2, respectively, and recrystallization of the Mo or W as the salt evaporates, result in major morphological changes including a loss of columnar structure and a significant increase in porosity. This effect is more pronounced in Na2MoO4/Mo electrodes, due to the lower stability of Na2MoO4.
Publication Date: Nov 01, 1988
Document ID:
19890054072
(Acquired Nov 28, 1995)
Accession Number: 89A41443
Subject Category: ENERGY PRODUCTION AND CONVERSION
Document Type: Journal Article
Publication Information: Electrochemical Society, Journal (ISSN 0013-4651); 135; 2736-274
Publisher Information: United States
Financial Sponsor: NASA; United States
Organization Source: Jet Propulsion Lab., California Inst. of Tech.; Pasadena, CA, United States
Description: 7p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: ALKALI METAL COMPOUNDS; ELECTRICAL IMPEDANCE; ELECTRODE MATERIALS; MOLYBDENUM; THERMOELECTRIC POWER GENERATION; TUNGSTEN; ELECTRIC DISCHARGES; MOLTEN SALT ELECTROLYTES; MOLYBDATES; POROUS MATERIALS; SODIUM COMPOUNDS; TUNGSTATES
Imprint And Other Notes: Electrochemical Society, Journal (ISSN 0013-4651), vol. 135, Nov. 1988, p. 2736-2742. Research supported by the U.S. Army, USAF, Sandia National Laboratories, and NASA.
Miscellaneous Notes: Research supported by the U.S. Army, USAF, Sandia National Laboratories, and NASA
Availability Source: Other Sources
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