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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Passerini, S.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (17/17 displayed)
- 2023High-capacity Li4Ti5O12-C thick ceramic electrodes manufactured by powder injection moulding
- 2020Structure rearrangements induced by lithium insertion in metal alloying oxide mixed spinel structure studied by x-ray absorption near-edge spectroscopycitations
- 2020Towards Advanced Sodium-Ion Batteries: Green, Low-Cost and High-Capacity Anode Compartment Encompassing Phosphorus/Carbon Nanocomposite as the Active Material and Aluminum as the Current Collectorcitations
- 2020Initial lithiation of carbon-coated zinc ferrite anodes studied by in-situ X-ray absorption spectroscopycitations
- 2020Assessment on the Use of High Capacity “Sn$_{4}$P$_{3}$”/NHC Composite Electrodes for Sodium-Ion Batteries with Ether and Carbonate Electrolytes
- 2019Structure rearrangements induced by lithium insertion in metal alloying oxide mixed spinel structure studied by x-ray absorption near-edge spectroscopycitations
- 2019Room temperature ionic liquid (RTIL)-based electrolyte cocktails for safe, high working potential Li-based polymer batteriescitations
- 2017Influence of electrochemical cycling on the rheo-impedance of anolytes for Li-based Semi Solid Flow Batteriescitations
- 2017Physicochemical and electrochemical investigations of the ionic liquid N-butyl -N-methyl-pyrrolidinium 4,5-dicyano-2-(trifluoromethyl) imidazole
- 2017Towards aging resistant lithium polymer batteries for safe wide temperature applications
- 2017Safe and Highly Conducting Polymer Electrolytes for Ageing Resistant Li-ion Energy Storage
- 2016High temperature stable separator for lithium batteries based on SiO² and hydroxypropyl guar gum
- 2016A Long-Life Lithium Ion Battery with Enhanced Electrode/Electrolyte Interface by Using an Ionic Liquid Solutioncitations
- 2016Exceptional long-life performance of lithium-ion batteries using ionic liquid-based electrolytescitations
- 2015A Comparative Study of Layered Transition Metal Oxide Cathodes for Application in Sodium-Ion Battery
- 2015Ionic Liquid Electrolyte for Lithium Oxygen and Lithium Ion Oxygen Cell
- 2002Magnetic resonance studies of chemically intercalated LixV2O5 aerogelscitations
Places of action
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article
Magnetic resonance studies of chemically intercalated LixV2O5 aerogels
Abstract
7Li, 51V solid-state nuclear magnetic resonance (NMR) and electron paramagnetic resonance (EPR) measurements have been performed upon chemically lithiated LixV2O5 aerogels, with compositions of 1.00<x<5.84. These compounds can intercalate reversibly large amounts of Li+ and, therefore, are of interest as battery cathodes. Still, the mechanism regarding the electron transfer from an inserted lithium metal to a host aerogel V2O5 and details regarding the lithium cation environments are not fully understood. LixV2O5 crystals are known to exhibit various structural phase changes and, when multiple phases are present, the capability of the material to intercalate reversibly appears to be adversely affected. On the other hand, aerogels have no such multiphase behavior and aerogel based cathodes exhibit greater stability upon cycling. NMR shows that neither the structure nor the dynamics vary greatly with the amount of lithium content, and that the lithiated aerogel is best described as a single-phase material. Characterization of lithium and vanadium sites is performed through analysis of both NMR and EPR spectra. 7Li line shapes are affected by first-order quadrupolar, magnetic dipolar interactions and motional narrowing. At and above room temperature, relaxation is governed primarily by a quadrupolar mechanism. NMR derived activation energies and diffusion coefficients are different from those of bronzes and electrochemically intercalated V2O5. 51V NMR lines, indicative of the presence of V5+ at all compositions, undergo diamagnetic shifts of up to about 50 ppm with an increase in lithium content. These results imply the presence of oxidized impurities or electronic charge delocalization. Additionally, EPR measurements provide evidence of VO2+ impurities and indirect evidence of nonbridging oxygen at high lithium contents.