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3D lithium ion batteries--from fundamentals to fabrication

Abstract : 3D microbatteries are proposed as a step change in the energy and power per footprint of surface mountable rechargeable batteries for microelectromechanical systems (MEMS) and other small electronic devices. Within a battery electrode, a 3D nanoarchitecture gives mesoporosity, increasing power by reducing the length of the diffusion path; in the separator region it can form the basis of a robust but porous solid, isolating the electrodes and immobilising an otherwise fluid electrolyte. 3D microarchitecture of the whole cell allows fabrication of interdigitated or interpenetrating networks that minimise the ionic path length between the electrodes in a thick cell. This article outlines the design principles for 3D microbatteries and estimates the geometrical and physical requirements of the materials. It then gives selected examples of recent progress in the techniques available for fabrication of 3D battery structures by successive deposition of electrodes, electrolytes and current collectors onto microstructured substrates by self-assembly methods.
Keywords : 3D battery MEMS Lithium
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Submitted on : Wednesday, August 29, 2012 - 10:37:39 AM
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Matthew Roberts, Phil Johns, John Owen, Daniel Brandell, Kristina Edström, et al.. 3D lithium ion batteries--from fundamentals to fabrication. Journal of Materials Chemistry, Royal Society of Chemistry, 2011, vol. 21, pp. 9876-9890. ⟨10.1039/c0jm04396f⟩. ⟨hal-00726169⟩



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