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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Vydáno v:	Journal of sol-gel science and technology Ročník 73; číslo 3; s. 536 - 543
Hlavní autoři:	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.
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	Boston Springer US 01.03.2015 Springer Nature B.V
Témata:	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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Popis
Shrnutí:	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.
Bibliografie:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 14
ISSN:	0928-0707 1573-4846
DOI:	10.1007/s10971-014-3511-5