期刊
SOLID STATE IONICS
卷 192, 期 1, 页码 279-283出版社
ELSEVIER
DOI: 10.1016/j.ssi.2010.02.007
关键词
Three-dimensional microbattery; Electrolyte modelling; Finite element analysis
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 LiCoO2 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. (C) 2010 Elsevier B.V. All rights reserved.
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