Advances in Materials and Current Collecting Networks for AMTEC Electrodes 929007
Electrode materials for the Alkali Metal Thermal to Electric Converter (AMTEC) play a significant role in the efficiency of the device. RhW and PtW alloys have been studied to determine the best performing material. While RhW electrodes typically have power densities somewhat lower than PtW electrodes, PtW performance is strongly influenced by the Pt/W ratio. The best performing Pt/W ratio is ∼3.4. RhW electrodes sinter more slowly than PtW and are predicted to have operating lifetimes up to 40 years; PtW electrodes are predicted to have lifetimes up to 7 years. Interaction with the current collection network can significantly decrease lifetime by inducing metal migration and segregation and by accelerating the sintering rate.
Citation: Ryan, M., Jeffries-Nakamura, B., Williams, R., Underwood, M. et al., "Advances in Materials and Current Collecting Networks for AMTEC Electrodes," SAE Technical Paper 929007, 1992, https://doi.org/10.4271/929007. Download Citation
Author(s):
M. A. Ryan, B. Jeffries-Nakamura, R. M. Williams, M. L. Underwood, D. O'Connor, S. Kikkert
Affiliated:
JPL, California Institute of Technology
Pages: 6
Event:
27th Intersociety Energy Conversion Engineering Conference (1992)
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Alloys
Metals
Powder metallurgy
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