Modeling of solid oxide fuel cells
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2006.
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| Format: | Thesis |
| Language: | eng |
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Massachusetts Institute of Technology
2007
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| Online Access: | http://hdl.handle.net/1721.1/38564 |
| _version_ | 1826213154551496704 |
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| author | Lee, Won Yong, S.M. Massachusetts Institute of Technology |
| author2 | Ahmed F. Ghoniem. |
| author_facet | Ahmed F. Ghoniem. Lee, Won Yong, S.M. Massachusetts Institute of Technology |
| author_sort | Lee, Won Yong, S.M. Massachusetts Institute of Technology |
| collection | MIT |
| description | Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2006. |
| first_indexed | 2024-09-23T15:44:28Z |
| format | Thesis |
| id | mit-1721.1/38564 |
| institution | Massachusetts Institute of Technology |
| language | eng |
| last_indexed | 2024-09-23T15:44:28Z |
| publishDate | 2007 |
| publisher | Massachusetts Institute of Technology |
| record_format | dspace |
| spelling | mit-1721.1/385642019-04-12T09:38:51Z Modeling of solid oxide fuel cells Lee, Won Yong, S.M. Massachusetts Institute of Technology Ahmed F. Ghoniem. Massachusetts Institute of Technology. Dept. of Mechanical Engineering. Massachusetts Institute of Technology. Dept. of Mechanical Engineering. Mechanical Engineering. Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2006. Includes bibliographical references (p. 107-110). A comprehensive membrane-electrode assembly (MEA) model of Solid Oxide Fuel Cell (SOFC)s is developed to investigate the effect of various design and operating conditions on the cell performance and to examine the underlying mechanisms that govern their performance. We review and compare the current modeling methodologies, and develop an one-dimensional MEA model based on a comprehensive approach that include the dusty-gas model (DGM) for gas transport in the porous electrodes, the detailed heterogeneous elementary reaction kinetics for the thermo-chemistry in the anode, and the detailed electrode kinetics for the electrochemistry at the triple-phase boundary. With regard to the DGM, we corrected the Knudsen diffusion coefficient in the previous model developed by Multidisciplinary University Research Initiative. Further, we formulate the conservation equations in the unsteady form, allowing for analyzing the response of the MEA to imposed dynamics. As for the electrochemistry model, we additionally analyzed all the possibilities of the rate-limiting reaction and proposed rate-limiting switched mechanism. Our model prediction agrees with experimental results significantly better than previous models, especially at high current density. by Won Yong Lee. S.M. 2007-08-29T20:29:06Z 2007-08-29T20:29:06Z 2006 2006 Thesis http://hdl.handle.net/1721.1/38564 154692145 eng M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582 110 p. application/pdf Massachusetts Institute of Technology |
| spellingShingle | Mechanical Engineering. Lee, Won Yong, S.M. Massachusetts Institute of Technology Modeling of solid oxide fuel cells |
| title | Modeling of solid oxide fuel cells |
| title_full | Modeling of solid oxide fuel cells |
| title_fullStr | Modeling of solid oxide fuel cells |
| title_full_unstemmed | Modeling of solid oxide fuel cells |
| title_short | Modeling of solid oxide fuel cells |
| title_sort | modeling of solid oxide fuel cells |
| topic | Mechanical Engineering. |
| url | http://hdl.handle.net/1721.1/38564 |
| work_keys_str_mv | AT leewonyongsmmassachusettsinstituteoftechnology modelingofsolidoxidefuelcells |