An NMR study of the stoichiometry and stability of lithium ion complexes with 12-crown-4, 15-crown-5 an 18-crown-6 in binary Acetonitrile-Nitrobenzene mixtures

1996 ◽  
Vol 26 (4) ◽  
pp. 243-251 ◽  
Author(s):  
Ali Reza Fakhari ◽  
Mojtaba Shamsipur
Keyword(s):  
Lithium Ion ◽  
Nmr Study ◽  
Lithium Ion Complexes

A molecular orbital study of some lithium ion complexes

1983 ◽  
Vol 87 (1) ◽  
pp. 73-78 ◽  
Author(s):  
Janet E. Del Bene ◽  
Michael J. Frisch ◽  
Krishnan Raghavachari ◽  
John A. Pople ◽  
Paul v. R. Schleyer
Keyword(s):  
Molecular Orbital ◽  
Lithium Ion ◽  
Molecular Orbital Study ◽  
Orbital Study ◽  
Lithium Ion Complexes

7Li NMR Study on Irreversible Capacity of LiNi0.8-xCo0.15Al0.05MgxO2Electrode in a Lithium-Ion Battery

2015 ◽  
Vol 162 (7) ◽  
pp. A1315-A1318 ◽  
Author(s):  
Miwa Murakami ◽  
Keiji Shimoda ◽  
Yoshio Ukyo ◽  
Hajime Arai ◽  
Yoshiharu Uchimoto ◽  
...  
Keyword(s):  
Lithium Ion Battery ◽  
Lithium Ion ◽  
Irreversible Capacity ◽  
Nmr Study ◽  
7Li Nmr

Solid-state NMR study of electrode/electrolyte materials for lithium-ion batteries

2013 ◽  
Vol 58 (32) ◽  
pp. 3287-3300 ◽  
Author(s):  
GuiMing ZHONG ◽  
Yong YANG ◽  
ShouShun CHEN ◽  
Xu HOU
Keyword(s):  
Solid State ◽  
Lithium Ion Batteries ◽  
Solid State Nmr ◽  
Lithium Ion ◽  
Nmr Study

scholarly journals Local Ion Dynamics in Polycrystalline β-LiGaO2: A Solid-State NMR Study

2017 ◽  
Vol 231 (7-8) ◽  
Author(s):  
C. Vinod Chandran ◽  
Kai Volgmann ◽  
Suliman Nakhal ◽  
Reinhard Uecker ◽  
Elena Witt ◽  
...  
Keyword(s):  
Solid State ◽  
Lithium Ion ◽  
Resonance Spectroscopy ◽  
Ion Dynamics ◽  
Energy Storage Devices ◽  
Ion Motion ◽  
Storage Devices ◽  
Nmr Study ◽  
Materials Used ◽  
Lithium Ion Conductors

AbstractSolid-state nuclear magnetic resonance spectroscopy is an efficient technique to characterize dynamics and structure of materials. It has been widely used to elucidate ion dynamics in lithium ion conductors. Fast moving lithium ions are needed in energy storage devices, whereas slow ion motion is exploited in some materials used, for example, as blankets in fusion reactors.

Site preferences and ion dynamics in lithium chalcohalide solid solutions with argyrodite structure: II. Multinuclear solid state NMR of the systems Li6PS5−x Se x Cl and Li6PS5−x Se x Br

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Barbara Koch ◽  
Shiao Tong Kong ◽  
Özgül Gün ◽  
Hans-Jörg Deiseroth ◽  
Hellmut Eckert
Keyword(s):  
Solid Solutions ◽  
Lithium Ion ◽  
Ionic Mobility ◽  
Magic Angle Spinning ◽  
Magic Angle ◽  
Ion Migration ◽  
Iodide Ions ◽  
Nmr Study ◽  
Structural Configurations ◽  
Migration Pathways

Abstract A comprehensive multinuclear (7Li, 31P, 35Cl, 77Se, 79Br) nuclear magnetic resonance (NMR) study has been conducted to characterize local structural configurations and atomic distributions in the crystallographically disordered solid solutions of composition Li6PS5−x Se x X (0 ≤ x ≤ 1, X = Cl, Br) with the Argyrodite structure. In contrast to the situation with the corresponding iodide homologs, there is no structural ordering between the 4a and 4c sites, with the halide ions occupying both of them with close to statistical probabilities. Nevertheless, throughout the composition range, the 16e Wyckoff sites of the Argyrodite structure are exclusively occupied by the chalcogen atoms, forming PY4 3− (Y = S, Se) tetrahedra, indicating the absence of P-halogen bonds. 31P magic-angle spinning (MAS)-NMR can serve to differentiate between the various possible PS4−n Se n 3− tetrahedral units in a quantitative fashion. Compared to the case of the anion-ordered Li6PS5−x Se x I solid solutions, the preference of P–S over P–Se bonding is significantly stronger, but it is weaker than in the halide free solid solutions Li7PS6−x Se x . Each individual PS4−n Se n 3− tetrahedron is represented by a peak cluster of up to five resonances, representing the five different configurations in which the PY4 3− ions are surrounded by the four closest chalcogenide and halide anions occupying the 4c sites; this distribution is close to statistical and can be used to deduce deviations of sample compositions from ideal stoichiometry. Non-linear 7Li chemical shift trends as a function of x are interpreted to indicate that the Coulombic traps created by sulfur-rich PS4−n Se n 3− ions (n ≤ 2) within the energy landscape of the lithium ions are deeper than those of the other anionic species present (i.e., selenium-richer PY4 3− tetrahedra, isolated chalcogenide or iodide ions), causing the Li+ ions to spend on average more time near them. Temperature dependent static 7Li NMR linewidths indicate higher mobility in the present systems than in the previously studied Li6PS5−x Se x I solid solutions. Unlike the situation in Li6PS5−x Se x I no rate distinction between intra-cage and inter-cage ionic motion is evident. Lithium ionic mobility increases with increasing selenium content. This effect can be attributed to the influences of higher anionic polarizability and a widening of the lithium ion migration pathways caused by lattice expansion. The results offer interesting new insights into the structure/ionic mobility correlations in this new class of compounds.

NMR study of lithium ion in nitrobenzene/water system

2005 ◽  
Vol 129 ◽  
pp. 81 ◽  
Author(s):  
Greg Moakes ◽  
Leslie T. Gelbaum ◽  
Johannes Leisen ◽  
Jiri Janata
Keyword(s):  
Water System ◽  
Lithium Ion ◽  
Nmr Study
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