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Li-ion pouch cells for vehicle applications-studies of water transmission and packing materials
Scania, Sweden; KTH Royal Institute of Technology, Sweden.
KTH Royal Institute of Technology, Sweden.
Scania, Sweden.
RISE, Innventia.ORCID iD: 0000-0002-2622-9757
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2013 (English)In: Energies, E-ISSN 1996-1073, Vol. 6, no 1, p. 400-410Article in journal (Refereed) Published
Abstract [en]

This study includes analysis of encapsulation materials from lithium-ion pouch cells and water vapour transmission rate (WVTR) measurements. WVTR measurements are performed on both fresh and environmentally stressed lithium-ion pouch cells. Capacity measurements are performed on both the fresh and the environmentally stressed battery cells to identify possible influences on electrochemical performance. Preparation of the battery cells prior to WVTR measurements includes opening of battery cells and extraction of electrode material, followed by resealing the encapsulations and adhesively mounting of gas couplings. A model describing the water diffusion through the thermal welds of the encapsulation are set up based on material analysis of the encapsulation material. Two WVTR equipments with different type of detectors are evaluated in this study. The results from the WVTR measurements show how important it is to perform this type of studies in dry environment and apply a rigorous precondition sequence before testing. Results from modelling confirm that the WVTR method has potential to be used for measurements of water diffusion into lithium-ion pouch cells. Consequently, WVTR measurements should be possible to use as a complement or alternative method to for example Karl Fisher titration.

Place, publisher, year, edition, pages
2013. Vol. 6, no 1, p. 400-410
Keywords [en]
Hybrid electrical vehicle (HEV), Lithium Ion BatteryPouch cell, Water vapor transmission
National Category
Renewable Bioenergy Research
Identifiers
URN: urn:nbn:se:ri:diva-9797DOI: 10.3390/en6010400Scopus ID: 2-s2.0-84873208505OAI: oai:DiVA.org:ri-9797DiVA, id: diva2:968579
Available from: 2016-09-12 Created: 2016-09-12 Last updated: 2023-08-28Bibliographically approved

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Flodberg, Göran

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