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Finite element modelling of ion transport in the electrolyte of a 3D-microbattery
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Materials Chemistry, Structural Chemistry.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Materials Chemistry, Structural Chemistry.
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2011 (English)In: Solid State Ionics, ISSN 0167-2738, E-ISSN 1872-7689, Vol. 192, no 1, 279-283 p.Article in journal (Refereed) Published
Abstract [en]

A mathematical model describing ionic transport in a 3D-microbattery (3D-MB) electrolyte is developed here using finite element methodology. The model is then exploited to study a 3D-MB based on an interdigitated plate ("trench") architecture for a 10 pm-thick electrolyte layer separating 10 mu m-thick graphite anode and LiCoO(2) cathode plates. The effect of varying plate length, end-shape and electronic conductivity is also modelled. It is shown that the 3D-MB architecture gives rise to qualitatively non-uniform current densities, leading to sub-optimal surface utilization. This can, in turn, be optimized by varying electrode geometries and/or material properties.

Place, publisher, year, edition, pages
2011. Vol. 192, no 1, 279-283 p.
Keyword [en]
Three-dimensional microbattery, Electrolyte modelling, Finite element analysis
National Category
Chemical Sciences Inorganic Chemistry
Research subject
Chemistry with specialization in Inorganic Chemistry
Identifiers
URN: urn:nbn:se:uu:diva-157213DOI: 10.1016/j.ssi.2010.02.007ISI: 000292848800060OAI: oai:DiVA.org:uu-157213DiVA: diva2:435880
Note
Conference: 17th International Conference on Solid State Lonics Location: Toronto, CANADA Date: JUN 28-JUL 03, 2009 Available from: 2011-08-20 Created: 2011-08-20 Last updated: 2011-11-29Bibliographically approved

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