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Thermal conductivity and internal temperature profiles of Li-ion secondary batteries

Richter, Frank; Kjelstrup, Signe; Vie, Preben Joakim Svela; Burheim, Odne Stokke
Journal article
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URI
http://hdl.handle.net/11250/2465090
Date
2017
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  • Institutt for energi og prosessteknikk [2623]
  • Institutt for kjemi [783]
  • Publikasjoner fra CRIStin - NTNU [19757]
Original version
Journal of Power Sources. 2017, 359 592-600.   10.1016/j.jpowsour.2017.05.045
Abstract
In this paper we report the thermal conductivity for several battery components. Materials were obtained from several electrode- and separator suppliers, and some were extracted from commercial batteries. We measured with and without electrolyte solvent and at different compaction pressures. The experimentally obtained values are used in a thermal model and corresponding internal temperature profiles are shown. The thermal conductivity of dry separator materials was found to range from 0.07 ± 0.01 to 0.18 ± 0.02 WK−1m−1 . Dry electrode (active) materials ranged from 0.13 ± 0.02 to 0.61 ± 0.02 WK−1m−1 . Adding the electrolyte solvent increased the thermal conductivity of electrode (active) materials by at least a factor of 2.
Publisher
Elsevier
Journal
Journal of Power Sources

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