Improved conductivity in tape casted Li-NASICON supported thick films: Effect of temperature treatments and lamination

Improved conductivity in tape casted Li-NASICON supported thick films: Effect of temperature treatments and lamination

In this work, the influence of different thermal sintering treatments on Li1.3Al0.3Ti1.7(PO4)3 NASICON thick films has been investigated. The isostatic lamination step performed before the thermal sintering of thick films has demonstrated to improve film density and grain size, increasing "bulk...

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Bibliographic Details
Published in:Journal of the European Ceramic Society Vol. 38; no. 4; pp. 1679 - 1687
Main Authors: Jiménez, R., del Campo, A., Calzada, M.L., Sanz, J., Kobylianska, S.D., Liniova, B.O., Belous, A.G., Ragulya, А.V.
Format: Journal Article
Language:English
Published: Elsevier Ltd 01-04-2018
Subjects:
Confocal Raman
Li- NASICON thick films
Sintering
Solid state Li batteries
Tape casting
Confocal Raman
Solid state Li batteries
Li- NASICON thick films
Sintering
Tape casting
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Summary:In this work, the influence of different thermal sintering treatments on Li1.3Al0.3Ti1.7(PO4)3 NASICON thick films has been investigated. The isostatic lamination step performed before the thermal sintering of thick films has demonstrated to improve film density and grain size, increasing "bulk" and grain boundary Li-conductivities. The confocal Raman spectroscopy characterization allowed the observation of the connectivity of the particles present in the ceramic samples and so a deeper understanding of ionic conductivity. The dependence of total and "bulk" Li conductivity on the samples microstructure is discussed. The films sintered by slow heating sintering with a previous lamination step, displayed an overall Li- conductivity >10−4Ω-1cm-1, that is superior to that reported in commercial OHARA Li- NASICON glass ceramics. The tape casting deposition method is scalable for preparation of large area thick supported electrolyte films with high conductivity for novel Li ion all solid state batteries (ASSB) architectures.
ISSN:0955-2219
1873-619X
DOI:10.1016/j.jeurceramsoc.2017.12.017