NMR study of diffusion in Li<sub>3</sub>N

Messer, R.; Birli, H.; Differt, K.

doi:10.1088/0022-3719/14/20/012

Cited by 36 publications

(32 citation statements)

References 19 publications

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“…From measurements of the self-diffusion coefficients using the 7 Li pulsed field gradient technique the barriers were found to be 0.68 and 0.41 eV [318]. In a series of papers [319,76,77,145] 6 Li and 7 Li NMR results revealed some of the details of the lithium ion diffusion processes. These were later confirmed by b-ray detected NMR [320] and additional information also came from using the special features of this technique.…”

Section: Fast Ion Motion In Rigid Matricesmentioning

confidence: 97%

“…Motional narrowing has been observed in a wide variety of lithium-containing solid materials ranging from metals [75], through ionic crystals [76,77], glasses [78,79] to doped polymers [80]. The changes that take place in the NMR spectra depend not only on the type of material but also upon the specific properties of the lithium ion sites.…”

Section: The Influence Of Motion On One-dimensional Spectramentioning

confidence: 99%

“…However, the width of the line associated with Li(2) is reduced from 12 to 1 kHz over this temperature range while that for Li(1) only decreased from 23 kHz to half that value. The authors [76] argue that these results can be understood only if the Li (2) ions are mobile at these temperatures. The Li(2) line-width is completely motionally narrowed while the Li(1) line-width is reduced by the contribution from the Li (2) spins.…”

Section: Fast Ion Motion In Rigid Matricesmentioning

confidence: 99%

“…Li NMR power spectra in Li 3 N with the applied magnetic field of 34.5 MHz perpendicular to the c axis at temperatures (a) 120 K, (b) 200 K, (c) 310 K (d) 420 K, and (e) 600 K. Adapted from[76] with permission from IOP Publishing Ltd.…”

mentioning

confidence: 99%

See 3 more Smart Citations

Solid-state Li NMR with applications to the translational dynamics in ion conductors

Böhmer

Jeffrey

Vogel

2007

Progress in Nuclear Magnetic Resonance Spectroscopy

225

232

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Section: Fast Ion Motion In Rigid Matricesmentioning

confidence: 97%

Section: The Influence Of Motion On One-dimensional Spectramentioning

confidence: 99%

Section: Fast Ion Motion In Rigid Matricesmentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Solid-state Li NMR with applications to the translational dynamics in ion conductors

Böhmer

Jeffrey

Vogel

2007

Progress in Nuclear Magnetic Resonance Spectroscopy

225

232

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“…[18,[115][116][117][118] So far, it has been the topic of numerous NMR experiments. [119][120][121][122][123][124] Its layered structure (space group P6/mmm) is depicted in Figure 7.…”

Section: Stimulated Echoesmentioning

confidence: 99%

From Micro to Macro: Access to Long‐Range Li⁺ Diffusion Parameters in Solids via Microscopic ^6, 7Li Spin‐Alignment Echo NMR Spectroscopy

2011

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The development of highly conductive solids is a rapidly growing research area in materials science. In particular, the study of Li-ion conductors is driven by the ambitious effort to design powerful lithium-ion batteries. A deeper understanding of Li dynamics in solids requires the availability of a large set of complementary techniques to probe Li self-diffusion on different length and time-scales. We report on (7)Li as well as (6)Li spin-alignment echo (SAE) nuclear magnetic resonance (NMR) spectroscopy, which is capable of probing long-range diffusion parameters from a microscopic, that is, atomic-scale, point of view. So far, variable-temperature SAE NMR spectroscopy has been applied to a number of polycrystalline and glassy Li-ion conductors. The materials investigated serve as model systems to unravel the interesting features of the technique in determining reliable Li jump rates and hopping activation energies. In particular, the latter are compared with those probed by macroscopic techniques such as dc-conductivity measurements that are sensitive to long-range translational motions.

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Direct Assessment of Ultralow Li⁺ Jump Rates in Single Crystalline Li₃N by Evolution‐Time‐Resolved ⁷Li Spin‐Alignment Echo NMR

et al. 2021

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Diffusion processes of small cations and anions play important roles in many applications such as batteries and sensors. Despite the enormous progress we have witnessed over the past years in characterizing the irregular movement of ions such as Li+, new methods able to sharpen our view and understanding of fast and slow diffusion phenomena are steadily developed. Still, very few techniques are, however, available to directly sense extremely slow Li+ diffusion processes. Here, we took advantage of 1D evolution‐time resolved 7Li spin‐alignment echo NMR that is able to probe the extremely slow interlayer Li+ hopping process in layer‐structured Li3N, which served as a model substance for our purposes. The use of single crystals enabled us to study this translational process without being interfered by the fast intralayer Li+ motions. At 318 K the corresponding jump rate of interlayer dynamics turned out to be in the order of 2500(200) s−1 resulting in a diffusion coefficient as low as 1×10−17 m2 s−1, which is in excellent agreement with results from literature. The method, comparable to 1D and 2D NMR exchange spectroscopy, relies on temporal fluctuations of electric interactions the jumping ions are subjected to. 7Li single crystal 1D SAE NMR offers new opportunities to precisely quantify slow Li+ diffusion processes needed to validate theoretical models and to develop design principles for new solid electrolytes.

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NMR study of diffusion in Li₃N

Cited by 36 publications

References 19 publications

Solid-state Li NMR with applications to the translational dynamics in ion conductors

Solid-state Li NMR with applications to the translational dynamics in ion conductors

From Micro to Macro: Access to Long‐Range Li⁺ Diffusion Parameters in Solids via Microscopic ^6, 7Li Spin‐Alignment Echo NMR Spectroscopy

Direct Assessment of Ultralow Li⁺ Jump Rates in Single Crystalline Li₃N by Evolution‐Time‐Resolved ⁷Li Spin‐Alignment Echo NMR

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NMR study of diffusion in Li3N

Cited by 36 publications

References 19 publications

Solid-state Li NMR with applications to the translational dynamics in ion conductors

Solid-state Li NMR with applications to the translational dynamics in ion conductors

From Micro to Macro: Access to Long‐Range Li+ Diffusion Parameters in Solids via Microscopic 6, 7Li Spin‐Alignment Echo NMR Spectroscopy

Direct Assessment of Ultralow Li+ Jump Rates in Single Crystalline Li3N by Evolution‐Time‐Resolved 7Li Spin‐Alignment Echo NMR

Contact Info

Product

Resources

About

NMR study of diffusion in Li₃N

From Micro to Macro: Access to Long‐Range Li⁺ Diffusion Parameters in Solids via Microscopic ^6, 7Li Spin‐Alignment Echo NMR Spectroscopy

Direct Assessment of Ultralow Li⁺ Jump Rates in Single Crystalline Li₃N by Evolution‐Time‐Resolved ⁷Li Spin‐Alignment Echo NMR