| People | Locations | Statistics |
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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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Navarra, Maria Assunta
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Topics
Publications (15/15 displayed)
- 2024Developing Innovative Apolar Gels Based on Cellulose Derivatives for Cleaning Metal Artworkscitations
- 2024Evidence of the Electrochemical Ca2+ Intercalation in Anatase Nanotubes
- 2024Evidence of the Electrochemical Ca$^{2+}$ Intercalation in Anatase Nanotubes
- 2024Composite anion exchange membranes based on graphene oxide for water electrolyzer applicationscitations
- 2024CeO2/rGO co-catalysts for PEMFCs
- 2024CeO2/rGO catalysts for PEMFCs
- 2024Insight into physico-chemical properties of oxalatoborate-based ionic liquids through combined experimental-theoretical characterization
- 2023Quasi-solid-state electrolytes - strategy towards stabilising Li|inorganic solid electrolyte interfaces in solid-state Li metal batteriescitations
- 2023Effects of Difluoro(oxalato)borate-Based Ionic Liquid as Electrolyte Additive for Li-Ion Batteriescitations
- 2023Metal Carbide Additives in Graphite‐Silicon Composites for Lithium‐Ion Batteriescitations
- 2023Metal carbide additives in graphite-silicon composites for lithium-ion batteriescitations
- 2021Emerging calcium batteriescitations
- 2016Quaternary polyethylene oxide electrolytes containing ionic liquid for lithium polymer batterycitations
- 2014In-situ gelled electrolyte for lithium battery: Electrochemical and Raman characterizationcitations
- 2013Adaptive neuro-fuzzy inference system and artificial neural network modeling of proton exchange membrane fuel cells based on nanocomposite and recast Nafion membranescitations
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article
Evidence of the Electrochemical Ca2+ Intercalation in Anatase Nanotubes
Abstract
Here, we demonstrate the electrochemical intercalation of Ca2+ ions within the lattice of anatase nanotubes (a-NTs) synthesized by hydrothermal treatment of TiO2/NaOH precursors followed by Na+/H+ ion exchange and H2O-loss at high temperature in air. Scanning electron microscopy, X-ray diffraction, and Raman spectroscopy confirm the formation of nanosized anatase, whereas transmission electron microscopy highlights the formation of nanotubular morphologies with an average diameter of 10 nm. TiO2 electrodes are able to deliver reversible specific capacities in aprotic batteries vs. calcium metal or in hybrid configurations vs. capacitive activated carbon using aprotic electrolytes (i. e., Ca(BH4)(2) in tetrahydrofuran or Ca(TFSI)(2) in dimethoxyethane, respectively). The electrochemical intercalation of Ca2+ ions into the anatase lattice is confirmed by X-ray absorption spectroscopy in close comparison with Na+ and Li+ intercalations. Ca2+ incorporation leads to the partial amorphization of the TiO2 lattice despite the limited Ca/Ti ratio (i. e., 0.09) obtained in discharge. The analysis of the extended X-ray absorption fine structure region allows the determination of the local structure of the incorporated Ca2+ ions and confirms that a disordered environment is obtained after the electrochemical reaction.