2026-09-20T04:16:46Zhttps://dspace.mit.edu/server/oai/requestoai:dspace.mit.edu:1721.1/1199532022-01-13T07:54:05Zcom_1721.1_7582com_1721.1_7581col_1721.1_131024
Betar Gallant.
Kestin, Rebecca (Rebecca Sarah Elmer)
Massachusetts Institute of Technology. Department of Mechanical Engineering.
Massachusetts Institute of Technology. Department of Mechanical Engineering
2019-01-11T16:05:02Z
2019-01-11T16:05:02Z
2018
2018
http://hdl.handle.net/1721.1/119953
1080339719
Thesis: S.B., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2018.
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 27-28).
Due to their high energy density, lithium-air batteries have tremendous potential for application to batteries for electric vehicles. While significant efforts have been made in understanding the material origins of electrochemical performance under discharging and charging conditions, there is still very limited understanding of the thermodynamics and thermal science, including heat transfer, of such reactions. Several methods and procedures that have been previously used to deduce entropy profiles in batteries are examined. One such microcalorimetric device allows for measurements of heat flows in electrochemical reactions to milli-Kelvin precision. This device has not previously been applied to gas-to-solid reactions. Next, an explanation of the design and manufacture of a device adapted to measure heat flows in solid-togas electrochemical reactions is explained. The high sensitivity of the measurements resulted in high noise levels. This paper also explains the main methods used to address and reduce this level of noise.
by Rebecca Kestin.
S.B.
31 pages
eng
Massachusetts Institute of Technology
MIT theses are protected by copyright. They may be viewed, downloaded, or printed from this source but further reproduction or distribution in any format is prohibited without written permission.
http://dspace.mit.edu/handle/1721.1/7582
Mechanical Engineering.
Design and manufacturing of a microcalorimeter for measuring heat flows in electrochemical reactions to milli-Kelvin precision
Thesis
application/pdf
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Publication
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<Abstract>Due to their high energy density, lithium-air batteries have tremendous potential for application to batteries for electric vehicles. While significant efforts have been made in understanding the material origins of electrochemical performance under discharging and charging conditions, there is still very limited understanding of the thermodynamics and thermal science, including heat transfer, of such reactions. Several methods and procedures that have been previously used to deduce entropy profiles in batteries are examined. One such microcalorimetric device allows for measurements of heat flows in electrochemical reactions to milli-Kelvin precision. This device has not previously been applied to gas-to-solid reactions. Next, an explanation of the design and manufacture of a device adapted to measure heat flows in solid-togas electrochemical reactions is explained. The high sensitivity of the measurements resulted in high noise levels. This paper also explains the main methods used to address and reduce this level of noise.</Abstract>
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