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@ARTICLE{Faber:1024900,
author = {Faber, Matthias and Buitkamp, Oliver and Ritz, Simon and
Börner, Martin and Berger, Jonathan and Friedrich, Julian
and Arzberger, Arno and Sauer, Dirk Uwe},
title = {{A} method to determine the specific heat capacity of
lithium-ion battery cells using thermal insulation},
journal = {Journal of power sources},
volume = {583},
issn = {0378-7753},
address = {New York, NY [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2024-02550},
pages = {233499 -},
year = {2023},
note = {Unterstützt durch BMBF Projekt: SimBAS project (Grant No.
03XP0338B) und OSLiB project (Grant No. 03XP0330C)},
abstract = {Thermal simulations of lithium-ion batteries that
contribute to improvements in the safety and lifetime of
battery systems require precise thermal parameters, such as
the specific heat capacity. In contrast to the vast number
of lithium-ion batteries, the number of specific heat
capacity results is very low. This work presents a new
method for accurately and easily determining the specific
heat capacity of battery cells of any form factor. Using an
extruded polystyrene thermal resistor, temperature logging
equipment, and two temperature chambers at different
temperatures, the presented approach determines the specific
heat capacity of cylindrical 18650 and 21700 cells, in
addition to two pouch cells, through simple temperature
changes. While the cylindrical cells have very similar
specific heat capacities, both pouch cells have
significantly higher specific heat capacities most likely
due to their different material compositions. Linear
approximations of the results agree well with a temperature
sensitivity of all battery models between 1.6 and 2.0 per
over the range of 0 to 40 . Compared to a reference material
with a known specific heat capacity, validation measurements
reveal an error between $1\%$ and $3\%.$},
cin = {IEK-12},
ddc = {620},
cid = {I:(DE-Juel1)IEK-12-20141217},
pnm = {1223 - Batteries in Application (POF4-122)},
pid = {G:(DE-HGF)POF4-1223},
typ = {PUB:(DE-HGF)16},
UT = {WOS:001077457100001},
doi = {10.1016/j.jpowsour.2023.233499},
url = {https://juser.fz-juelich.de/record/1024900},
}