Meta-analysis of experimental results for heat capacity and thermal conductivity in lithium-ion batteries: A critical review
File(s)POWER-S-21-06019-Manuscript.pdf (2.47 MB)
Accepted version
Author(s)
Type
Journal Article
Abstract
Scenarios with rapid energy conversion for lithium-ion batteries are increasingly relevant, due to the desire for more powerful electric tools or faster charging electric vehicles. However, higher power means higher cooling requirements, affecting the battery temperature and its thermal gradients. In turn, temperature is a key quantity influencing battery performance, safety and lifetime. Therefore, thermal models are increasingly important for the design and operation of battery systems. Key parameters are specific heat capacity and thermal conductivity. For these parameters, this paper presents a comprehensive review of the experimental results in the literature, where the median values and corresponding uncertainties are summarized. Whenever available, data is analyzed from component to cell level with the discussion of dependencies on temperature, state of charge (SOC) and state of health (SOH). This meta-analysis reveals gaps in knowledge and research needs. For instance, we uncover inconsistencies between the specific heat capacity of electrode-separator stacks and full-cells. For the thermal conductivity, we found that thermal contact resistance and dependencies on battery states have been poorly studied. There is also a lack of measurements at high temperatures, which are required for safety studies. Overall, this study serves as a valuable reference material for both modellers and experimenters.
Date Issued
2022-02
Date Acceptance
2021-11-23
Citation
Journal of Power Sources, 2022, 522, pp.1-25
ISSN
0378-7753
Publisher
Elsevier BV
Start Page
1
End Page
25
Journal / Book Title
Journal of Power Sources
Volume
522
Copyright Statement
© 2022 Elsevier Ltd. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence http://creativecommons.org/licenses/by-nc-nd/4.0/
Sponsor
Engineering & Physical Science Research Council (E
Engineering & Physical Science Research Council (EPSRC)
Innovate UK
The Faraday Institution
Identifier
https://www.sciencedirect.com/science/article/pii/S0378775321013173?via%3Dihub
Grant Number
J15119 - PO:500174140
EP/R045518/1
104428
FIRG025
Subjects
Energy
03 Chemical Sciences
09 Engineering
Publication Status
Published
Article Number
230829
Date Publish Online
2022-01-17