| 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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Aquilanti, Giuliana
Universidad de Cantabria
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (13/13 displayed)
- 2024Separation of terbium as a first step towards high purity terbium-161 for medical applicationscitations
- 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
- 2019Evidence of structural modifications in the region around the broad dielectric maxima in the 30% Sn-doped barium titanate relaxorcitations
- 2017Enhanced Electrocatalytic Oxygen Evolution in Au–Fe Nanoalloyscitations
- 2016Dependence of the Jahn-Teller distortion in LaMn1-xScxO3 on the isovalent Mn-site substitutioncitations
- 2015On the exchange bias effect in NiO nanoparticles with a core(antiferromagnetic)/shell (spin glass) morphologycitations
- 2014Interplay between microstructure and magnetism in NiO nanoparticles: breakdown of the antiferromagnetic ordercitations
- 2012Silver Nanoparticles Stabilized with Thiols: A Close Look at the Local Chemistry and Chemical Structurecitations
- 2009Arsenite sequestration at the surface of nano-Fe(OH)2, ferrous-carbonate hydroxide, and green-rust after bioreduction of arsenic-sorbed lepidocrocite by Shewanella putrefacienscitations
- 2009Arsenite sequestration at the surface of nano-Fe(OH)2, ferrous-carbonate hydroxide, and green-rust after bioreduction of arsenic-sorbed lepidocrocite by Shewanella putrefacienscitations
- 2008Local structure of liquid and undercooled liquid Cu probed by x-ray absorption spectroscopy.citations
- 2008Hyperspectral μ-XANES mapping in the diamond-anvil cell: analytical procedure applied to the decomposition of (Mg,Fe)-ringwoodite at the upper/lower mantle boundarycitations
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>