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Atomic Layer Deposition of Functional Layers for on Chip 3D Li-Ion All Solid State Microbattery
- Source :
- Advanced Energy Materials, Advanced Energy Materials, 2016, 7 (2), ⟨10.1002/aenm.201601402⟩, Advanced Energy Materials, Wiley-VCH Verlag, 2017, 7 (2), ⟨10.1002/aenm.201601402⟩
- Publication Year :
- 2016
- Publisher :
- Wiley, 2016.
-
Abstract
- Nowadays, millimeter scale power sources are key devices for providing autonomy to smart, connected, and miniaturized sensors. However, until now, planar solid state microbatteries do not yet exhibit a sufficient surface energy density. In that context, architectured 3D microbatteries appear therefore to be a good solution to improve the material mass loading while keeping small the footprint area. Beside the design itself of the 3D microbaterry, one important technological barrier to address is the conformal deposition of thin films (lithiated or not) on 3D structures. For that purpose, atomic layer deposition (ALD) technology is a powerful technique that enables conformal coatings of thin film on complex substrate. An original, robust, and highly efficient 3D scaffold is proposed to significantly improve the geometrical surface of miniaturized 3D microbattery. Four functional layers composing the 3D lithium ion microbattery stacking has been successfully deposited on simple and double microtubes 3D templates. In depth synchrotron X-ray nanotomography and high angle annular dark field transmission electron microscope analyses are used to study the interface between each layer. For the first time, using ALD, anatase TiO2 negative electrode is coated on 3D tubes with Li3PO4 lithium phosphate as electrolyte, opening the way to all solid-state 3D microbatteries. The surface capacity is significantly increased by the proposed topology (high area enlargement factor – “thick” 3D layer), from 3.5 μA h cm−2 for a planar layer up to 0.37 mA h cm−2 for a 3D thin film (105 times higher).
- Subjects :
- Materials science
[SPI] Engineering Sciences [physics]
[SPI.NANO] Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics
chemistry.chemical_element
Context (language use)
Nanotechnology
3D microbattery
02 engineering and technology
Substrate (electronics)
010402 general chemistry
01 natural sciences
Atomic Layer Depostion
[SPI]Engineering Sciences [physics]
Atomic layer deposition
Fast ion conductor
General Materials Science
[SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics
Thin film
ComputingMilieux_MISCELLANEOUS
Renewable Energy, Sustainability and the Environment
021001 nanoscience & nanotechnology
Surface energy
0104 chemical sciences
solid electrolyte
chemistry
double microtube
[PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]
Lithium
0210 nano-technology
Layer (electronics)
Subjects
Details
- ISSN :
- 16146832 and 16146840
- Volume :
- 7
- Database :
- OpenAIRE
- Journal :
- Advanced Energy Materials
- Accession number :
- edsair.doi.dedup.....4ee67aa88906d5fa0739d56f8a67ffa3