| 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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Pinna, Nicola
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (24/24 displayed)
- 2024Role of the Microstructure in the Li-Storage Performance of Spinel-Structured High-Entropy (Mn,Fe,Co,Ni,Zn) Oxide Nanofiberscitations
- 2023Single-Step Formation of Metal Oxide Nanostructures Wrapped in Mesoporous Silica and Silica–Niobia Catalysts for the Condensation of Furfural with Acetonecitations
- 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
- 2023Mesostructured γ-Al2O3-Based Bifunctional Catalysts for Direct Synthesis of Dimethyl Ether from CO2citations
- 2022ZnSnO3 or Zn2SnO4/SnO2 Hierarchical Material? Insight into the Formation of ZnSn(OH)6 Derived Oxidescitations
- 2022ALD‐Coated Mesoporous Iridium‐Titanium Mixed Oxides: Maximizing Iridium Utilization for an Outstanding OER Performancecitations
- 2022High-Entropy Spinel Oxides Produced via Sol-Gel and Electrospinning and Their Evaluation as Anodes in Li-Ion Batteriescitations
- 2022Atomic Layer Deposition of MoS2 Decorated TiO2 Nanotubes for Photoelectrochemical Water Splittingcitations
- 2021SnO2-SiO2 1D Core-Shell Nanowires Heterostructures for Selective Hydrogen Sensing
- 2021Impact of Different Intermediate Layers on the Morphology and Crystallinity of TiO2 Grown on Carbon Nanotubes by Atomic Layer Deposition
- 2020Comparing the Performance of Nb2O5 Composites with Reduced Graphene Oxide and Amorphous Carbon in Li‐ and Na‐Ion Electrochemical Storage Devices
- 2018Stabilization of Mesoporous Iron Oxide Films against Sintering and Phase Transformations via Atomic Layer Deposition of Alumina and Silicacitations
- 2017Hybrid organic–inorganic transition-metal phosphonates as precursors for water oxidation electrocatalystscitations
- 2016Are electrospun carbon/metal oxide composite fibers relevant electrode materials for Li-ion batteries?citations
- 2016Elemental Sulfur and Molybdenum Disulfide Composites for Li-S Batteries with Long Cycle Life and High-Rate Capabilitycitations
- 2015Gas sensing properties and p-type response of ALD TiO 2 coated carbon nanotubescitations
- 2015Stabilization of Titanium Dioxide Nanoparticles at the Surface of Carbon Nanomaterials Promoted by Microwave Heatingcitations
- 2015Chemical modification of graphene oxide through diazonium chemistry and its influence on the structure-properties relationships of graphene oxide-iron oxide nanocompositescitations
- 2015Chemical Modification of Graphene Oxide through Diazonium Chemistry and Its Influence on the Structure-Property Relationships of Graphene Oxide-Iron Oxide Nanocompositescitations
- 2014Colloidal polymers from dipolar assembly of cobalt-tipped CdSe@CdS nanorodscitations
- 2013Impact of the morphological characteristics on the supercapacitive electrochemical performances of FeOx/Reduced Graphene Oxide nanocompositescitations
- 2013Sensing behavior of SnO2/reduced graphene oxide nanocomposites toward NO2citations
- 2013THz nanocrystal acoustic vibrations from ZrO2 3D supercrystalscitations
- 2012Room-Temperature Hydrogen Sensing with Heteronanostructures Based on Reduced Graphene Oxide and Tin Oxidecitations
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>