Physica B: Condensed Matter, volume 627, pages 413599
Inter-grain Li+ conduction in Sc and Y doped LATP compounds
2
ITM University, Vadodara, 390002, Gujarat, India
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Publication type: Journal Article
Publication date: 2022-02-01
Journal:
Physica B: Condensed Matter
Quartile SCImago
Q2
Quartile WOS
Q2
Impact factor: 2.8
ISSN: 09214526
Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering
Abstract
Low value of grain boundary conductivity in Li-NASICON materials is an important limitation that needs to be overcome. Inter-grain conduction of Li + ions in Li 1·3 Al 0.3-x Sc x Ti 1.7 (PO 4 ) 3 (LASTP) and Li 1·3 Al 0.3-x Y x Ti 1.7 (PO 4 ) 3 (LAYTP) (where x = 0.01 and 0.07) samples is investigated. The samples, prepared by solid state reaction method, were characterised by X-ray diffraction (XRD) and Scanning Electron Microscopy (SEM) techniques. Electrochemical Impedance Spectroscopy (EIS) was performed in the frequency range of 20 MHz to 1 Hz, and temperature range of 20 °C–100 °C. The grain boundary impedance and capacitance was found to vary with an external dc bias voltage. Higher grain boundary conductivity was found for sample containing higher yttrium concentration. Effect of space charge on grain boundary conductivity is evaluated in light of two competing models. • Grain boundary conductivity in scandium and yttrium doped Li-Al-Ti-P (LATP) material is studied. • LiTi2(PO4)3 (LTP) was identified as the primary Li+ ion conducting phase. It belongs to R-3c space group. Small amounts of secondary phases were also identified. • Accumulated ions rather than depleted charges from grain boundary core form space charge at grain boundary.
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Kothari D. H., Kanchan D. K. Inter-grain Li+ conduction in Sc and Y doped LATP compounds // Physica B: Condensed Matter. 2022. Vol. 627. p. 413599.
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Kothari D. H., Kanchan D. K. Inter-grain Li+ conduction in Sc and Y doped LATP compounds // Physica B: Condensed Matter. 2022. Vol. 627. p. 413599.
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TY - JOUR
DO - 10.1016/j.physb.2021.413599
UR - https://doi.org/10.1016/j.physb.2021.413599
TI - Inter-grain Li+ conduction in Sc and Y doped LATP compounds
T2 - Physica B: Condensed Matter
AU - Kothari, Dharmesh H
AU - Kanchan, D. K.
PY - 2022
DA - 2022/02/01 00:00:00
PB - Elsevier
SP - 413599
VL - 627
SN - 0921-4526
ER -
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@article{2022_Kothari,
author = {Dharmesh H Kothari and D. K. Kanchan},
title = {Inter-grain Li+ conduction in Sc and Y doped LATP compounds},
journal = {Physica B: Condensed Matter},
year = {2022},
volume = {627},
publisher = {Elsevier},
month = {feb},
url = {https://doi.org/10.1016/j.physb.2021.413599},
pages = {413599},
doi = {10.1016/j.physb.2021.413599}
}