Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Barbara Jeffries-Nakamura"'
Autor:
Barbara Jeffries-Nakamura, Margaret A. K. Ryan, S. Kikkert, M. L. Underwood, D. O'Connor, Roger M. Williams
Publikováno v:
Solid State Ionics. :806-810
Potassium β″-alumina single crystals have been reported by several groups to have higher ionic conductivity than sodium β″-alumina crystals at room temperature, and similar conductivities are obtained at temperatures up to 600–700 K. Potassiu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ac94f168968b215b50bea4ec5252cc47
https://doi.org/10.1016/0167-2738(92)90258-q
https://doi.org/10.1016/0167-2738(92)90258-q
Autor:
Barbara Jeffries-Nakamura, Roger M. Williams, J. T. Kummer, C. P. Bankston, M. E. Loveland, M. L. Underwood, H. Leduc
Publikováno v:
Journal of The Electrochemical Society. 137:1709-1716
Mixed mass-transport and kinetic control of sodium ion reduction at porous inert electrodes on sodium beta-double-prime alumina solid electrolyte (BASE) ceramic in a high-temperature electrochemical cell has been observed and modeled. The high ionic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::35a543684ea81aecc2dc71197c8bfd25
https://doi.org/10.1149/1.2086775
https://doi.org/10.1149/1.2086775
Publikováno v:
Journal of The Electrochemical Society. 137:1716-1723
The exchange current, transfer coefficient, mass-transport parameters, and electrode capacitance at the Na(g)/porous Mo/Na-Beta-double prime alumina solid electrolyte (BASE) phase boundary have been evaluated from 740 to 1220 K. The transfer coeffici
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::48dee9078e523a583138f7629faa34ed
https://doi.org/10.1149/1.2086787
https://doi.org/10.1149/1.2086787
Autor:
H. Frank, S. Surampudi, Barbara Jeffries-Nakamura, Sekharipuram R. Narayanan, Andrew Kindler, J. Kosek, Marshall C. Smart, William Chun, G. Halpert, Thomas I. Valdez, C. Cropley
Publikováno v:
Proceedings of 11th Annual Battery Conference on Applications and Advances.
A direct methanol-air fuel cell operating at near atmospheric pressure, low-flow rate air, and at temperatures close to 60/spl deg/C would tremendously enlarge the scope of potential applications. While earlier studies have reported performance with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7634c6a2cf4a684bc2372c61a7567303
https://doi.org/10.1109/bcaa.1996.484980
https://doi.org/10.1109/bcaa.1996.484980
Autor:
Thomas I. Valdez, Q. J. Wang, W. Chun, Cecelia C. Cropley, G. K. S. Prakash, H. Frank, G. A. Olah, Sekharipuram R. Narayanan, J. Kosek, M. C. Smart, Barbara Jeffries-Nakamura, A. B. La Conti, Subbarao Surumpudi, G. Halpert
Direct methanol fuel cells for portable power applications have been advanced significantly under DARPA- and ARO-sponsored programs over the last five years. A liquid-feed direct methanol fuel cell developed under these programs, employs a proton exc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d61263eca0140ed364aa463cf3a7fa94
https://doi.org/10.2172/460283
https://doi.org/10.2172/460283
Autor:
Barbara Jeffries-Nakamura, Adam Kisor, D. O'Connor, Margaret A. Ryan, S. Kikkert, Roger M. Williams
Publikováno v:
Intersociety Energy Conversion Engineering Conference.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7767cf0b6e6754e2e6efefdf39d3b1fe
https://doi.org/10.2514/6.1994-3833
https://doi.org/10.2514/6.1994-3833
Publikováno v:
Intersociety Energy Conversion Engineering Conference.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ee7c385f0a5b68ddf75ecc3ff8a86583
https://doi.org/10.2514/6.1994-3831
https://doi.org/10.2514/6.1994-3831
Autor:
Margaret A. Ryan, Roger M. Williams, Chutima Saipetch, Adam Kisor, Dennis O'Connor, Mark L. Underwood, Barbara Jeffries-Nakamura, Mohamed S. El-Genk, Mark D. Hoover
Publikováno v:
AIP Conference Proceedings.
Improvement of the performance of an AMTEC device requires improvement and development of components as well as of device geometry and construction. The research and development effort at JPL includes studies which address both overall device constru
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a8b86dc75af09e15d5112da1f2595b95
https://doi.org/10.1063/1.2950169
https://doi.org/10.1063/1.2950169
Autor:
Barbara Jeffries-Nakamura, Margaret A. Ryan, D. O'Connor, Mark L. Underwood, Roger M. Williams
Publikováno v:
AIP Conference Proceedings.
The alkali metal thermal to electric converter (AMTEC) is an electrochemical device for the direct conversion of thermal energy to electrical energy with efficiencies potentially near Carnot. The future usefulness of AMTEC for space power conversion
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2d026022d35e626ca959164da004c845
https://doi.org/10.1063/1.43113
https://doi.org/10.1063/1.43113
Autor:
Mark L. Underwood, Barbara Jeffries-Nakamura, Margaret A. Ryan, Roger M. Williams, D. O'Connor
Publikováno v:
AIP Conference Proceedings.
Studies of components for AMTEC devices at JPL have focussed on electrode materials, materials and construction of the current collection network, and the β‘‐alumina solid electrolyte. Electrode materials include thin films of molybdenum metal a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::54a38038a4f3102ae16fe8b7aa85e751
https://doi.org/10.1063/1.43116
https://doi.org/10.1063/1.43116