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Multiphysics modeling of mechanical and electrochemical phenomena in structural composites for energy storage: Single carbon fiber micro-battery
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
School of Chemical Science and Engineering, KTH Royal Institute of Technology.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0001-9649-8621
2018 (English)In: Journal of reinforced plastics and composites (Print), ISSN 0731-6844, E-ISSN 1530-7964, Vol. 37, no 10, p. 701-715Article in journal (Refereed) Published
Abstract [en]

This paper presents a framework for multiphysics modeling of a novel type of multifunctional composite material, structured on microscale, with ability to function as battery cell in addition to carry mechanical load. The micro-battery consists of a single carbon fiber surrounded by very thin solid electrolyte coating and embedded in a matrix which is a porous material containing active particles able to intercalate lithium. During battery operation (discharging and charging) the structural battery constituents undergo volume changes, caused by lithium-ion movement. The presented mathematical model is solved numerically using COMSOL software and results are used to analyze the physical phenomena occurring in the structural battery material. Parametric analysis is performed to reveal the significance of geometrical parameters like fiber volume fraction in the battery and the porosity content in the matrix on the multifunctional performance of the composite unit including its swelling/shrinking during charging/discharging.

Place, publisher, year, edition, pages
SAGE Open, 2018. Vol. 37, no 10, p. 701-715
National Category
Composite Science and Engineering
Research subject
Polymeric Composite Materials
Identifiers
URN: urn:nbn:se:ltu:diva-68296DOI: 10.1177/0731684418760207ISI: 000432091800004OAI: oai:DiVA.org:ltu-68296DiVA, id: diva2:1197028
Note

Validerad;2018;Nivå 2;2018-05-18 (andbra)

Available from: 2018-04-11 Created: 2018-04-11 Last updated: 2018-06-04Bibliographically approved

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