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Carbon fiber composites with battery function: Stresses and dimensional changes due to Li-ion diffusion
Lulea Univ Technol, Dept Engn Sci & Math, Lulea, Sweden..
KTH, School of Chemical Science and Engineering (CHE).ORCID iD: 0000-0001-9203-9313
Lulea Univ Technol, Dept Engn Sci & Math, Lulea, Sweden..
2018 (English)In: Journal of composite materials, ISSN 0021-9983, E-ISSN 1530-793X, Vol. 52, no 20, p. 2729-2742Article in journal (Refereed) Published
Abstract [en]

Structural composite materials that simultaneously carry mechanical loads, while storing electrical energy offers the potential of significantly reduced total component weight owing to the multifunctionality. In the suggested micro-battery, the carbon fiber is employed as a negative electrode of the battery and also as a composite reinforcement material. It is coated with a solid polymer electrolyte working as an ion conductor and separator while transferring mechanical loads. The coated fiber is surrounded by a conductive positive electrode material matrix. This paper demonstrates a computational methodology for addressing mechanical stresses arising in a conceptualized micro-battery and dimensional changes of the cell during electrochemical cycling, caused by time-dependent gradients in lithium ion concentration distribution.

Place, publisher, year, edition, pages
Sage Publications, 2018. Vol. 52, no 20, p. 2729-2742
Keywords [en]
Micro-battery, carbon fibers, lithium ion, intercalation, swelling, stress state
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-233420DOI: 10.1177/0021998317752825ISI: 000441034800003Scopus ID: 2-s2.0-85051282917OAI: oai:DiVA.org:kth-233420DiVA, id: diva2:1240149
Funder
Swedish Energy Agency, 37712-1
Note

QC 20180820

Available from: 2018-08-20 Created: 2018-08-20 Last updated: 2018-08-20Bibliographically approved

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Lindbergh, Göran

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