Journal
APPLIED THERMAL ENGINEERING
Volume 67, Issue 1-2, Pages 439-446Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.applthermaleng.2014.03.061
Keywords
Supercapacitors; Energy storage; Joule heating; Scaling analysis
Funding
- National Science Foundation Graduate Research Fellowship [DGE-1144087]
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-SC0001342]
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This study presents a first-order thermal analysis for electric double layer capacitors (EDLCs). It is based on the lumped-capacitance approximation and accounts for both irreversible and reversible internal heat generation. A simple analytical expression for the overall temperature rise during galvanostatic cycling was derived. A scaling analysis was performed and demonstrated with experimental data collected from commercial EDLCs. This thermal model enables rapid estimation of reversible heat generation and prediction of the temperature evolution in EDLCs without performing computationally intensive numerical simulations. (C) 2014 Elsevier Ltd. All rights reserved.
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