7Li NMR Studies of Short-Range and Long-Range Lithium Ion Dynamics in a Heat-Treated Lithium Iodide-Doped Lithium Thiophosphate Glass Featuring High Ion Conductivity

2020 ◽  
Vol 124 (52) ◽  
pp. 28614-28622
Author(s):  
Edda Winter ◽  
Philipp Seipel ◽  
Vanessa Miß ◽  
Stefan Spannenberger ◽  
Bernhard Roling ◽  
...  
Keyword(s):  
Long Range ◽  
Short Range ◽  
Lithium Ion ◽  
Ion Conductivity ◽  
Ion Dynamics ◽  
Lithium Iodide ◽  
Nmr Studies ◽  
Heat Treated ◽  
7Li Nmr

7Li NMR studies of lithium ion dynamics in polymer-derived silicon oxycarbide ceramics

2016 ◽  
Vol 287 ◽  
pp. 28-35 ◽  
Author(s):  
Michael Haaks ◽  
Jan Kaspar ◽  
Anjuli Franz ◽  
Magdalena Graczyk-Zajac ◽  
Ralf Riedel ◽  
...  
Keyword(s):  
Lithium Ion ◽  
Silicon Oxycarbide ◽  
Ion Dynamics ◽  
Nmr Studies ◽  
7Li Nmr

Computational, Electrochemical and 7Li NMR Studies of Lithiated Disordered Carbons Electrodes in Lithium Ion Cells

1997 ◽  
Vol 496 ◽  
Author(s):  
G. Sandί ◽  
R. E. Gerald ◽  
L. G. Scanlon ◽  
K. A. Carrado ◽  
R. E. Winans
Keyword(s):  
Electrochemical Cell ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Carbon Anode ◽  
Nmr Studies ◽  
Lithium Bonding ◽  
7Li Nmr ◽  
Disordered Carbon ◽  
A Charge

ABSTRACTDisordered carbons that deliver high reversible capacity in electrochemical cells have been synthesized by using inorganic clays as templates to control the pore size and the surface area. The capacities obtained were much higher than those calculated if the resultant carbon had a graphitic-like structure. Computational chemistry was used to investigate the nature of lithium bonding in a carbon lattice unlike graphite. The lithium intercalated fullenere Lin-C60 was used as a model for our (non-graphitic) disordered carbon lattice. A dilithium-C60 system with a charge and multiplicity of (0,1) and a trilithium-C60 system with a charge and multiplicity of (0,4) were investigated. The spatial distribution of lithium ions in an electrochemical cell containing this novel disordered carbon material was investigated in situ by Li-7 NMR using an electrochemical cell that was incorporated into a toroid cavity nuclear magnetic resonance (NMR) imager. The concentration of solvated Li+ ions in the carbon anode appears to be larger than in the bulk electrolyte, is substantially lower near the copper/carbon interface, and does not change with cell charging.

scholarly journals Effects of Non-Stoichiometry on the Ground State of the Frustrated System Li0.8Ni0.6Sb0.4O2

Materials ◽  
2021 ◽  
Vol 14 (22) ◽  
pp. 6785
Author(s):  
Evgeniya Vavilova ◽  
Timur Salikhov ◽  
Margarita Iakovleva ◽  
Tatyana Vasilchikova ◽  
Elena Zvereva ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Magnetic Susceptibility ◽  
Specific Heat ◽  
Spin Glass ◽  
Short Range ◽  
Freezing Temperature ◽  
X Ray Diffraction ◽  
Nmr Studies ◽  
X Ray ◽  
7Li Nmr

The non-stoichiometric system Li0.8Ni0.6Sb0.4O2 is a Li-deficient derivative of the zigzag honeycomb antiferromagnet Li3Ni2SbO6. Structural and magnetic properties of Li0.8Ni0.6Sb0.4O2 were studied by means of X-ray diffraction, magnetic susceptibility, specific heat, and nuclear magnetic resonance measurements. Powder X-ray diffraction data shows the formation of a new phase, which is Sb-enriched and Li-deficient with respect to the structurally honeycomb-ordered Li3Ni2SbO6. This structural modification manifests in a drastic change of the magnetic properties in comparison to the stoichiometric partner. Bulk static (dc) magnetic susceptibility measurements show an overall antiferromagnetic interaction (Θ = −4 K) between Ni2+ spins (S = 1), while dynamic (ac) susceptibility reveals a transition into a spin glass state at a freezing temperature TSG ~ 8 K. These results were supported by the absence of the λ-anomaly in the specific heat Cp(T) down to 2 K. Moreover, combination of the bulk static susceptibility, heat capacity and 7Li NMR studies indicates a complicated temperature transformation of the magnetic system. We observe a development of a cluster spin glass, where the Ising-like Ni2+ magnetic moments demonstrate a 2D correlated slow short-range dynamics already at 12 K, whereas the formation of 3D short range static ordered clusters occurs far below the spin-glass freezing temperature at T ~ 4 K as it can be seen from the 7Li NMR spectrum.

scholarly journals Lithium ion dynamics in Li2S+GeS2+GeO2 glasses studied using 7Li NMR field-cycling relaxometry and line-shape analysis

2015 ◽  
Vol 70 ◽  
pp. 53-62 ◽  
Author(s):  
Jan Gabriel ◽  
Oleg V. Petrov ◽  
Youngsik Kim ◽  
Steve W. Martin ◽  
Michael Vogel
Keyword(s):  
Shape Analysis ◽  
Line Shape ◽  
Lithium Ion ◽  
Ion Dynamics ◽  
Line Shape Analysis ◽  
7Li Nmr ◽  
Field Cycling

Synthesis of Li4V(PO4)2F2 and 6,7Li NMR studies of its lithium ion dynamics

2010 ◽  
Vol 20 (21) ◽  
pp. 4340 ◽  
Author(s):  
L. S. Cahill ◽  
Y. Iriyama ◽  
L. F. Nazar ◽  
G. R. Goward
Keyword(s):  
Lithium Ion ◽  
Ion Dynamics ◽  
Nmr Studies
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