NMR Studies of Lithium Diffusion in Li3(NH2)2I over Wide Range of Li+ Jump Rates

Alexander V. Skripov; Kai Volgmann; C. Vinod Chandran; Roman V. Skoryunov; Olga A. Babanova; Alexei V. Soloninin; Shin Ichi Orimo; Paul Heitjans

doi:10.1515/zpch-2016-0925

NMR Studies of Lithium Diffusion in Li₃(NH₂)₂I over Wide Range of Li⁺ Jump Rates

Alexander V. Skripov, Kai Volgmann, C. Vinod Chandran, Roman V. Skoryunov, Olga A. Babanova, Alexei V. Soloninin, Shin Ichi Orimo, Paul Heitjans

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

We have studied the Li diffusion in the complex hydride Li₃(NH₂)₂I which appears to exhibit fast Li ion conduction. To get a detailed insight into the Li motion, we have applied ⁷Li nuclear magnetic resonance spectroscopy methods, such as spin-lattice relaxation in the laboratory and rotating frames of reference, as well as spin-alignment echo. This combined approach allows us to probe Li jump rates over the wide dynamic range (~10²-10⁹ s^-1). The spin-lattice relaxation data in the range 210-410 K can be interpreted in terms of a thermally-activated Li jump process with a certain distribution of activation energies. However, the low-temperature spin-alignment echo decays at T≤200 K suggest the presence of another Li jump process with the very low effective activation energy.

Original language	English
Pages (from-to)	1455-1465
Number of pages	11
Journal	Zeitschrift fur Physikalische Chemie
Volume	231
Issue number	7-8
DOIs	https://doi.org/10.1515/zpch-2016-0925
Publication status	Published - 2017 Jul 26

Keywords

complex hydride
ion diffusion
nuclear magnetic resonance
spin-alignment echo
spin-lattice relaxation

ASJC Scopus subject areas

Physical and Theoretical Chemistry

Access to Document

10.1515/zpch-2016-0925

Cite this

NMR Studies of Lithium Diffusion in Li₃(NH₂)₂I over Wide Range of Li⁺ Jump Rates. / Skripov, Alexander V.; Volgmann, Kai; Chandran, C. Vinod; Skoryunov, Roman V.; Babanova, Olga A.; Soloninin, Alexei V.; Orimo, Shin Ichi; Heitjans, Paul.

In: Zeitschrift fur Physikalische Chemie, Vol. 231, No. 7-8, 26.07.2017, p. 1455-1465.

Research output: Contribution to journal › Article › peer-review

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title = "NMR Studies of Lithium Diffusion in Li3(NH2)2I over Wide Range of Li+ Jump Rates",

abstract = "We have studied the Li diffusion in the complex hydride Li3(NH2)2I which appears to exhibit fast Li ion conduction. To get a detailed insight into the Li motion, we have applied 7Li nuclear magnetic resonance spectroscopy methods, such as spin-lattice relaxation in the laboratory and rotating frames of reference, as well as spin-alignment echo. This combined approach allows us to probe Li jump rates over the wide dynamic range (~102-109 s-1). The spin-lattice relaxation data in the range 210-410 K can be interpreted in terms of a thermally-activated Li jump process with a certain distribution of activation energies. However, the low-temperature spin-alignment echo decays at T≤200 K suggest the presence of another Li jump process with the very low effective activation energy.",

keywords = "complex hydride, ion diffusion, nuclear magnetic resonance, spin-alignment echo, spin-lattice relaxation",

author = "Skripov, {Alexander V.} and Kai Volgmann and Chandran, {C. Vinod} and Skoryunov, {Roman V.} and Babanova, {Olga A.} and Soloninin, {Alexei V.} and Orimo, {Shin Ichi} and Paul Heitjans",

note = "Funding Information: This work was supported in part by the Russian Federal Agency of Scientific Organizations under Program {"}Spin{"} No. 01201463330, the Russian Foundation for Basic Research (Grant. No. 15-03-01114), and the JSPS KAKENHI Grant No. 25220911 from MEXT, Japan. A.V. Skripov is grateful to Alexander von Humboldt Foundation for the support of his research visit to Leibniz Universitat Hannover. Research in Hannover has generally been supported by the German Research Foundation (DFG) in the frame of the Research Unit FOR 1277 (molife). The authors are also grateful to V.I. Voronin and V.A. Blatov for useful discussions. Publisher Copyright: {\textcopyright} 2017 Walter de Gruyter GmbH, Berlin/Boston 2017.",

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AU - Skripov, Alexander V.

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AU - Babanova, Olga A.

AU - Soloninin, Alexei V.

AU - Orimo, Shin Ichi

AU - Heitjans, Paul

N1 - Funding Information: This work was supported in part by the Russian Federal Agency of Scientific Organizations under Program "Spin" No. 01201463330, the Russian Foundation for Basic Research (Grant. No. 15-03-01114), and the JSPS KAKENHI Grant No. 25220911 from MEXT, Japan. A.V. Skripov is grateful to Alexander von Humboldt Foundation for the support of his research visit to Leibniz Universitat Hannover. Research in Hannover has generally been supported by the German Research Foundation (DFG) in the frame of the Research Unit FOR 1277 (molife). The authors are also grateful to V.I. Voronin and V.A. Blatov for useful discussions. Publisher Copyright: © 2017 Walter de Gruyter GmbH, Berlin/Boston 2017.

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