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):  
2020 ◽  
Vol 124 (52) ◽  
pp. 28614-28622
Author(s):  
Edda Winter ◽  
Philipp Seipel ◽  
Vanessa Miß ◽  
Stefan Spannenberger ◽  
Bernhard Roling ◽  
...  

2016 ◽  
Vol 287 ◽  
pp. 28-35 ◽  
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Michael Haaks ◽  
Jan Kaspar ◽  
Anjuli Franz ◽  
Magdalena Graczyk-Zajac ◽  
Ralf Riedel ◽  
...  

2021 ◽  
Vol 362 ◽  
pp. 115585
Author(s):  
A.V. Skripov ◽  
G. Majer ◽  
O.A. Babanova ◽  
R.V. Skoryunov ◽  
A.V. Soloninin ◽  
...  

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
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Philipp Seipel ◽  
Tatiana Zinkevich ◽  
Sylvio Indris ◽  
Bambar Davaasuren ◽  
...  

Abstract Various nuclear magnetic resonance (NMR) methods are combined to study the structure and dynamics of Li1.5Al0.5Ti1.5(PO4)3 (LATP) samples, which were obtained from sintering at various temperatures between 650 and 900 °C. 6Li, 27Al, and 31P magic angle spinning (MAS) NMR spectra show that LATP crystallites are better defined for higher calcination temperatures. Analysis of 7Li spin-lattice relaxation and line-shape changes indicates the existence of two species of lithium ions with clearly distinguishable jump dynamics, which can be attributed to crystalline and amorphous sample regions, respectively. An increase of the sintering temperature leads to higher fractions of the fast lithium species with respect to the slow one, but hardly affects the jump dynamics in either of the phases. Specifically, the fast and slow lithium ions show jumps in the nanoseconds regime near 300 and 700 K, respectively. The activation energy of the hopping motion in the LATP crystallites amounts to ca. 0.26 eV. 7Li field-gradient diffusometry reveals that the long-range ion migration is limited by the sample regions featuring slow transport. The high spatial resolution available from the high static field gradients of our setup allows the observation of the lithium ion diffusion inside the small (<100 nm) LATP crystallites, yielding a high self-diffusion coefficient of D = 2 × 10−12 m2/s at room temperature.


2019 ◽  
Vol 48 (25) ◽  
pp. 9376-9387 ◽  
Author(s):  
Isabel Hanghofer ◽  
Bernhard Gadermaier ◽  
Alexandra Wilkening ◽  
Daniel Rettenwander ◽  
H. Martin R. Wilkening

7Li NMR reveals rapid cation exchange processes in NASICON-type Li1.4Ca0.2Zr1.8(PO4)3 on a local length scale.


2020 ◽  
Vol 355 ◽  
pp. 115398
Author(s):  
Miwa Murakami ◽  
Fumika Fujisaki ◽  
Yoshiyuki Morita

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