Amorphous and perovskite Li3xLa(2/3)−xTiO3 (thin) films via chemical solution deposition: solid electrolytes for all-solid-state Li-ion batteries

Thin films of amorphous and crystalline perovskite Li 3x La (2/3)−x TiO 3 (LLT) (x = 0.117) are prepared by means of aqueous chemical solution deposition onto rutile TiO 2 thin films as an anode, yielding an electrochemical half-cell. The Li-ion conductivity of the pin-hole free, amorphous LLT thin...

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Bibliographic Details
Published in:Journal of sol-gel science and technology Vol. 73; no. 3; pp. 536 - 543
Main Authors: van den Ham, E. J., Peys, N., De Dobbelaere, C., D’Haen, J., Mattelaer, F., Detavernier, C., Notten, P. H. L., Hardy, A., Van Bael, M. K.
Format: Journal Article
Language:English
Published: Boston Springer US 01.03.2015
Springer Nature B.V
Subjects:
Anodes
Ceramics
Chemistry and Materials Science
Composites
Crystal structure
Crystallinity
Deposition
Fourier transforms
Glass
Inorganic Chemistry
Lithium-ion batteries
Materials Science
Molten salt electrolytes
Nanotechnology
Natural Materials
Optical and Electronic Materials
Organic chemistry
Original Paper
Perovskites
Precursors
Rechargeable batteries
Reflectance
Rutile
Solid electrolytes
Solid state
Thin films
Titanium dioxide
X-ray diffraction
Solid-electrolyte
Thin films
Li-ion conductivity
Aqueous CSD
Half-cell
ISSN:0928-0707, 1573-4846
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Summary:Thin films of amorphous and crystalline perovskite Li 3x La (2/3)−x TiO 3 (LLT) (x = 0.117) are prepared by means of aqueous chemical solution deposition onto rutile TiO 2 thin films as an anode, yielding an electrochemical half-cell. The Li-ion conductivity of the pin-hole free, amorphous LLT thin film (90 nm thick) is 3.8 × 10 −8  S cm −1 on Pt and 1.3 × 10 −8  S cm −1 on rutile TiO 2 , while measuring perpendicular to the thin film direction with impedance spectroscopy. Grazing angle attenuated total reflectance-Fourier transform infrared spectroscopy shows that all organic precursor molecules have been decomposed at 500 °C. In addition, in situ (heating) X-ray diffraction analysis shows that phase pure crystalline perovskite LLT (x = 0.117) is formed on top of the rutile TiO 2 anode at 700 °C. Furthermore, thickness control is possible by varying the precursor solution concentration and the number of deposition cycles. The current study presents a promising synthesis route to develop all-solid-state battery devices based on multi-metal oxide materials using aqueous precursor chemistry.
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ISSN:0928-0707
1573-4846
DOI:10.1007/s10971-014-3511-5