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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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Li, Min
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2024Reaction mechanism and performance of innovative 2D germanane‐silicane alloys: SixGe1−xH electrodes in lithium‐ion batteriescitations
- 2024Role of the Microstructure in the Li-Storage Performance of Spinel-Structured High-Entropy (Mn,Fe,Co,Ni,Zn) Oxide Nanofiberscitations
- 2023Cr silicate as a prototype for engineering magnetic phases in air-stable two-dimensional transition-metal silicatescitations
- 2023Porous and Water Stable 2D Hybrid Metal Halide with Broad Light Emission and Selective H2O Vapor Sorptioncitations
- 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
- 2023Porous and Water Stable 2D Hybrid Metal Halide with Broad Light Emission and Selective H<sub>2</sub>O Vapor Sorptioncitations
- 2022Two-dimensional layered chromium selenophosphate: advanced high-performance anode material for lithium-ion batteriescitations
- 2020High performance flexible hybrid supercapacitors based on nickel hydroxide deposited on copper oxide supported by copper foam for a sunlight-powered rechargeable energy storage systemcitations
- 2015Macrobend optical sensing for pose measurement in soft robot armscitations
- 2001Adhesion of polymer-inorganic interfaces by nanoindentationcitations
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>