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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/25079

Title: Wet-Chemical Synthesis of 3D Stacked Thin Film Metal-Oxides for All-Solid-State Li-Ion Batteries
Authors: van den Ham, Evert Jonathan
Maino, Giulia
Bonneux, Gilles
Marchal, Wouter
Elen, Ken
Gielis, Sven
Mattelaer, Felix
Detavernier, Christophe
Notten, Peter H. L.
Van Bael, Marlies K.
Hardy, An
Issue Date: 2017
Publisher: MDPI AG
Citation: MATERIALS, 10(9), p. 1-17 (Art N° 1072)
Abstract: By ultrasonic spray deposition of precursors, conformal deposition on 3D surfaces of tungsten oxide (WO3) negative electrode and amorphous lithium lanthanum titanium oxide (LLT) solid-electrolyte has been achieved as well as an all-solid-state half-cell. Electrochemical activity was achieved of the WO3 layers, annealed at temperatures of 500 degrees C. Galvanostatic measurements show a volumetric capacity (415 mAh.cm(-3)) of the deposited electrode material. In addition, electrochemical activity was shown for half-cells, created by coating WO3 with LLT as the solid-state electrolyte. The electron blocking properties of the LLT solid-electrolyte was shown by ferrocene reduction. 3D depositions were done on various micro-sized Si template structures, showing fully covering coatings of both WO3 and LLT. Finally, the thermal budget required for WO3 layer deposition was minimized, which enabled attaining active WO3 on 3D TiN/Si micro-cylinders. A 2.6-fold capacity increase for the 3D-structured WO3 was shown, with the same current density per coated area.
Notes: [van den Ham, Evert Jonathan; Maino, Giulia; Bonneux, Gilles; Marchal, Wouter; Elen, Ken; Gielis, Sven; Van Bael, Marlies K.; Hardy, An] Hasselt Univ, Inst Mat Res, Div Imomec, Inorgan & Phys Chem & Imec, Martelarenlaan 42, B-3500 Hasselt, Belgium. [Elen, Ken] IMEC VZW, Div Imomec, Wetenschapspk 1, B-3590 Diepenbeek, Belgium. [Mattelaer, Felix; Detavernier, Christophe] Univ Ghent, Dept Solid State Sci, Krijgslaan 281 S1, B-9000 Ghent, Belgium. [Notten, Peter H. L.] Eindhoven Univ Technol, Energy Mat & Devices, NL-5600 MB Eindhoven, Netherlands. [Notten, Peter H. L.] Forschungszentrum Julich, Fundamental Electrochem IEK 9, D-52425 Julich, Germany.
URI: http://hdl.handle.net/1942/25079
DOI: 10.3390/ma10091072
ISI #: 000411506700082
ISSN: 1996-1944
Category: A1
Type: Journal Contribution
Validation: ecoom, 2018
Appears in Collections: Research publications

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