Journal of Chemical Physics, volume 140, issue 12, pages 124509

Lithium ion diffusion in Li β-alumina single crystals measured by pulsed field gradient NMR spectroscopy

Publication typeJournal Article
Publication date2014-03-28
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor4.4
ISSN00219606, 10897690
Physical and Theoretical Chemistry
General Physics and Astronomy
Abstract

The lithium ion diffusion coefficient of a 93% Li β-alumina single crystal was measured for the first time using pulsed field gradient (PFG) NMR spectroscopy with two different crystal orientations. The diffusion coefficient was found to be 1.2 × 10−11 m2/s in the direction perpendicular to the c axis at room temperature. The Li ion diffusion coefficient along the c axis direction was found to be very small (6.4 × 10−13 m2/s at 333 K), which suggests that the macroscopic diffusion of the Li ion in the β-alumina crystal is mainly two-dimensional. The diffusion coefficient for the same sample was also estimated using NMR line narrowing data and impedance measurements. The impedance data show reasonable agreement with PFG-NMR data, while the line narrowing measurements provided a lower value for the diffusion coefficient. Line narrowing measurements also provided a relatively low value for the activation energy and pre-exponential factor. The temperature dependent diffusion coefficient was obtained in the temperature range 297–333 K by PFG-NMR, from which the activation energy for diffusion of the Li ion was estimated. The activation energy obtained by PFG-NMR was smaller than that obtained by impedance measurements, which suggests that thermally activated defect formation energy exists for 93% Li β-alumina single crystals. The diffusion time dependence of the diffusion coefficient was observed for the Li ion in the 93% Li β-alumina single crystal by means of PFG-NMR experiments. Motion of Li ion in fractal dimension might be a possible explanation for the observed diffusion time dependence of the diffusion coefficient in the 93% Li β–alumina system.

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Chowdhury M. T. et al. Lithium ion diffusion in Li β-alumina single crystals measured by pulsed field gradient NMR spectroscopy // Journal of Chemical Physics. 2014. Vol. 140. No. 12. p. 124509.
GOST all authors (up to 50) Copy
Chowdhury M. T., Takekawa R., Iwai Y., Kuwata N., Kawamura J. Lithium ion diffusion in Li β-alumina single crystals measured by pulsed field gradient NMR spectroscopy // Journal of Chemical Physics. 2014. Vol. 140. No. 12. p. 124509.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1063/1.4869347
UR - https://doi.org/10.1063/1.4869347
TI - Lithium ion diffusion in Li β-alumina single crystals measured by pulsed field gradient NMR spectroscopy
T2 - Journal of Chemical Physics
AU - Chowdhury, Mohammed Tareque
AU - Takekawa, Reiji
AU - Iwai, Yoshiki
AU - Kuwata, Naoaki
AU - Kawamura, Junichi
PY - 2014
DA - 2014/03/28 00:00:00
PB - American Institute of Physics (AIP)
SP - 124509
IS - 12
VL - 140
SN - 0021-9606
SN - 1089-7690
ER -
BibTex |
Cite this
BibTex Copy
@article{2014_Chowdhury,
author = {Mohammed Tareque Chowdhury and Reiji Takekawa and Yoshiki Iwai and Naoaki Kuwata and Junichi Kawamura},
title = {Lithium ion diffusion in Li β-alumina single crystals measured by pulsed field gradient NMR spectroscopy},
journal = {Journal of Chemical Physics},
year = {2014},
volume = {140},
publisher = {American Institute of Physics (AIP)},
month = {mar},
url = {https://doi.org/10.1063/1.4869347},
number = {12},
pages = {124509},
doi = {10.1063/1.4869347}
}
MLA
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MLA Copy
Chowdhury, Mohammed Tareque, et al. “Lithium ion diffusion in Li β-alumina single crystals measured by pulsed field gradient NMR spectroscopy.” Journal of Chemical Physics, vol. 140, no. 12, Mar. 2014, p. 124509. https://doi.org/10.1063/1.4869347.
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