| 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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Triolo, Claudia
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (12/12 displayed)
- 2024Role of the Microstructure in the Li-Storage Performance of Spinel-Structured High-Entropy (Mn,Fe,Co,Ni,Zn) Oxide Nanofiberscitations
- 2023Charge Storage Mechanism in Electrospun Spinel‐Structured High‐Entropy (Mn<sub>0.2</sub>Fe<sub>0.2</sub>Co<sub>0.2</sub>Ni<sub>0.2</sub>Zn<sub>0.2</sub>)<sub>3</sub>O<sub>4</sub> Oxide Nanofibers as Anode Material for Li‐Ion Batteriescitations
- 2022High-Entropy Spinel Oxides Produced via Sol-Gel and Electrospinning and Their Evaluation as Anodes in Li-Ion Batteriescitations
- 2021Synthesis, Characterization and Photocatalytic Behavior ofSiO2@nitrized-TiO2Nanocomposites Obtained by aStraightforward Novel Approachcitations
- 2020Comparing the Performance of Nb2O5 Composites with Reduced Graphene Oxide and Amorphous Carbon in Li‐ and Na‐Ion Electrochemical Storage Devices
- 2019Transition metal oxides on reduced graphene oxide nanocomposites: Evaluation of physicochemical propertiescitations
- 2018Synthesis and characterization of Fe2O3/reduced graphene oxide nanocomposite as a high-performance anode material for sodium-ion batteries
- 2017Synthesis, CO2 sorption and capacitive properties of novel protic poly(ionic liquid)scitations
- 2017Capacitive properties of the hydrophobic [2-(methacryloyloxy)ethyl]-trimethyl ammonium nonafluoro-1-butanesulfonate poly(ionic liquid) thin filmcitations
- 2016Reliability model application for power devices using mechanical strain real time mappingcitations
- 2016Electrospun coral-like α-Fe2O3 nanostructures for photoelectrochemical water splitting
- 2015Si-MODIFIED SOLVOTHERMAL SYTHESIS OF α-Fe2O3 FOR PHOTOELECTROCHEMICAL APPLICATIONS
Places of action
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article
Charge Storage Mechanism in Electrospun Spinel‐Structured High‐Entropy (Mn<sub>0.2</sub>Fe<sub>0.2</sub>Co<sub>0.2</sub>Ni<sub>0.2</sub>Zn<sub>0.2</sub>)<sub>3</sub>O<sub>4</sub> Oxide Nanofibers as Anode Material for Li‐Ion Batteries
Abstract
<jats:title>Abstract</jats:title><jats:p>High‐entropy oxides (HEOs) have emerged as promising anode materials for next‐generation lithium‐ion batteries (LIBs). Among them, spinel HEOs with vacant lattice sites allowing for lithium insertion and diffusion seem particularly attractive. In this work, electrospun oxygen‐deficient (Mn,Fe,Co,Ni,Zn) HEO nanofibers are produced under environmentally friendly calcination conditions and evaluated as anode active material in LIBs. A thorough investigation of the material properties and Li<jats:sup>+</jats:sup> storage mechanism is carried out by several analytical techniques, including ex situ synchrotron X‐ray absorption spectroscopy. The lithiation process is elucidated in terms of lithium insertion, cation migration, and metal‐forming conversion reaction. The process is not fully reversible and the reduction of cations to the metallic form is not complete. In particular, iron, cobalt, and nickel, initially present mainly as Fe<jats:sup>3+</jats:sup>, Co<jats:sup>3+</jats:sup>/Co<jats:sup>2+</jats:sup>, and Ni<jats:sup>2+</jats:sup>, undergo reduction to Fe<jats:sup>0</jats:sup>, Co<jats:sup>0</jats:sup>, and Ni<jats:sup>0</jats:sup> to different extent (Fe < Co < Ni). Manganese undergoes partial reduction to Mn<jats:sup>3+</jats:sup>/Mn<jats:sup>2+</jats:sup> and, upon re‐oxidation, does not revert to the pristine oxidation state (+4). Zn<jats:sup>2+</jats:sup> cations do not electrochemically participate in the conversion reaction, but migrating from tetrahedral to octahedral positions, they facilitate Li‐ion transport within lattice channels opened by their migration. Partially reversible crystal phase transitions are observed.</jats:p>