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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/24191

Title: 3D indium tin oxide electrodes by ultrasonic spray deposition for current collection applications
Authors: van den Ham, Evert Jonathan
Elen, Ken
Bonneux, Gilles
Maino, Giulia
Notten, P. H. L.
Van Bael, Marlies K.
Hardy, An
Issue Date: 2017
Publisher: ELSEVIER SCIENCE BV
Citation: JOURNAL OF POWER SOURCES, 348, p. 130-137
Abstract: Three dimensionally (3D) structured indium tin oxide (ITO) thin films are synthesized and characterized as a 3D electrode material for current collection applications. Using metal citrate chemistry in combination with ultrasonic spray deposition, a low cost wet-chemical method has been developed to achieve conformal ITO coatings on non-planar scaffolds. Although there is room for improvement with respect to the resistivity (9.9.10-3 Omega. cm, 220 nm thick planar films), high quality 3D structured coatings were shown to exhibit conductive properties based on ferrocene reactivity. In view of applications in Li-ion batteries, the electrochemical stability of the current collector was investigated, indicating that stability is guaranteed for voltages of 1.5 V and up (vs. Li+/Li). In addition, subsequent 3D coating of the ITO with WO3 as a negative electrode (battery) material confirmed the 3D ITO layer functions as a proper current collector. Using this approach, an over 4-fold capacity increase was booked for 3D structured WO3 in comparison to planar samples, confirming the current collecting capabilities of the 3D ITO coating. Therefore, the 3D ITO presented is considered as a highly interesting material for 3D battery applications and beyond. (C) 2017 Elsevier B.V. All rights reserved.
Notes: [van den Ham, E. J.; Elen, K.; Bonneux, G.; Maino, G.; Van Bael, M. K.; Hardy, A.] Hasselt Univ, Inst Mat Res Inorgan & Phys Chem & IMEC, Div IMOMEC, Martelarenlaan 42, B-3500 Hasselt, Belgium. [Elen, K.] IMEC VZW, Div IMOMEC, Wetenschapspark 1, B-3590 Diepenbeek, Belgium. [Notten, P. H. L.] Eindhoven Univ Technol, POB 513, NL-5600 MB Eindhoven, Netherlands. [Notten, P. H. L.] Forschungszentrum Julich, Fundamental Elect IEK 9, D-52425 Julich, Germany.
URI: http://hdl.handle.net/1942/24191
DOI: 10.1016/j.jpowsour.2017.03.006
ISI #: 000399867300015
ISSN: 0378-7753
Category: A1
Type: Journal Contribution
Appears in Collections: Research publications

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