Details
| Original language | English |
|---|---|
| Pages (from-to) | 1327-1339 |
| Number of pages | 13 |
| Journal | Zeitschrift fur Physikalische Chemie |
| Volume | 229 |
| Issue number | 9 |
| Publication status | Published - 28 Sept 2015 |
Abstract
In this work nuclear magnetic resonance (NMR) and impedance spectroscopy (IS) studies on Li ion dynamics in microcrystalline γ-LiAlO2 are presented. The sample was prepared by solid state synthesis between Li2CO3 and Al2O3 in air, followed by a quenching procedure. The presence of phase-pure γ-LiAlO2 was confirmed by X-ray powder diffraction including Rietveld refinement. Further structural characterization was done with 6Li, 7Li and 27Al NMR. Several NMR techniques such as spin-lattice relaxation measurements, motional narrowing experiments, as well as spin-alignment echo were employed for the investigation of Li ion diffusion. The measurements were carried out at high temperatures (up to 970 K) in order to access the regime of Li ion motion being very slow. The dc conductivities measured by IS in the temperature range from 680 K to 870 K were converted to diffusion coefficients being compatible with those obtained by NMR.
Keywords
- Impedance Spectroscopy, LiAlO, Lithium Ion Diffusion, Nuclear Magnetic Resonance
ASJC Scopus subject areas
- Chemistry(all)
- Physical and Theoretical Chemistry
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In: Zeitschrift fur Physikalische Chemie, Vol. 229, No. 9, 28.09.2015, p. 1327-1339.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - NMR and Impedance Spectroscopy Studies on Lithium Ion Diffusion in Microcrystalline γ-LiAlO2
AU - Witt, Elena
AU - Nakhal, Suliman
AU - Chandran, C. Vinod
AU - Lerch, Martin
AU - Heitjans, Paul
N1 - Publisher Copyright: © 2015 Walter de Gruyter.
PY - 2015/9/28
Y1 - 2015/9/28
N2 - In this work nuclear magnetic resonance (NMR) and impedance spectroscopy (IS) studies on Li ion dynamics in microcrystalline γ-LiAlO2 are presented. The sample was prepared by solid state synthesis between Li2CO3 and Al2O3 in air, followed by a quenching procedure. The presence of phase-pure γ-LiAlO2 was confirmed by X-ray powder diffraction including Rietveld refinement. Further structural characterization was done with 6Li, 7Li and 27Al NMR. Several NMR techniques such as spin-lattice relaxation measurements, motional narrowing experiments, as well as spin-alignment echo were employed for the investigation of Li ion diffusion. The measurements were carried out at high temperatures (up to 970 K) in order to access the regime of Li ion motion being very slow. The dc conductivities measured by IS in the temperature range from 680 K to 870 K were converted to diffusion coefficients being compatible with those obtained by NMR.
AB - In this work nuclear magnetic resonance (NMR) and impedance spectroscopy (IS) studies on Li ion dynamics in microcrystalline γ-LiAlO2 are presented. The sample was prepared by solid state synthesis between Li2CO3 and Al2O3 in air, followed by a quenching procedure. The presence of phase-pure γ-LiAlO2 was confirmed by X-ray powder diffraction including Rietveld refinement. Further structural characterization was done with 6Li, 7Li and 27Al NMR. Several NMR techniques such as spin-lattice relaxation measurements, motional narrowing experiments, as well as spin-alignment echo were employed for the investigation of Li ion diffusion. The measurements were carried out at high temperatures (up to 970 K) in order to access the regime of Li ion motion being very slow. The dc conductivities measured by IS in the temperature range from 680 K to 870 K were converted to diffusion coefficients being compatible with those obtained by NMR.
KW - Impedance Spectroscopy
KW - LiAlO
KW - Lithium Ion Diffusion
KW - Nuclear Magnetic Resonance
UR - http://www.scopus.com/inward/record.url?scp=84941630264&partnerID=8YFLogxK
U2 - 10.1515/zpch-2015-0587
DO - 10.1515/zpch-2015-0587
M3 - Article
AN - SCOPUS:84941630264
VL - 229
SP - 1327
EP - 1339
JO - Zeitschrift fur Physikalische Chemie
JF - Zeitschrift fur Physikalische Chemie
SN - 0942-9352
IS - 9
ER -