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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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Ajayan, Pulickel
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Topics
Publications (9/9 displayed)
- 2024Deciphering Sodium‐Ion Storage: 2D‐Sulfide versus Oxide Through Experimental and Computational Analysescitations
- 2024Tunable 2D Conjugated Porous Organic Polymer Films for Precise Molecular Nanofiltration and Optoelectronicscitations
- 2023Cooperative Copper Single Atom Catalyst in Two‐dimensional Carbon Nitride for Enhanced CO<sub>2</sub> Electrolysis to Methanecitations
- 2022Explosive percolation yields highly-conductive polymer nanocompositescitations
- 2022Sustainable valorization of asphaltenes via flash joule heatingcitations
- 2021Highly efficient photoelectric effect in halide perovskites for regenerative electron sourcescitations
- 2019Optical Control of Non-Equilibrium Phonon Dynamics.citations
- 2019Structural determination of Enzyme-Graphene Nanocomposite Sensor Material
- 2017Ultrafast non-radiative dynamics of atomically thin MoSe2citations
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article
Deciphering Sodium‐Ion Storage: 2D‐Sulfide versus Oxide Through Experimental and Computational Analyses
Abstract
<jats:title>Abstract</jats:title><jats:p>Transition metal derivatives exhibit high theoretical capacity, making them promising anode materials for sodium‐ion batteries. Sulfides, known for their superior electrical conductivity compared to oxides, enhance charge transfer, leading to improved electrochemical performance. Here, a hierarchical WS<jats:sub>2</jats:sub> micro‐flower is synthesized by thermal sulfurization of WO<jats:sub>3</jats:sub>. Comprising interconnected thin nanosheets, this structure offers increased surface area, facilitating extensive internal surfaces for electrochemical redox reactions. The WS<jats:sub>2</jats:sub> micro‐flower demonstrates a specific capacity of ≈334 mAh g<jats:sup>−1</jats:sup> at 15 mA g<jats:sup>−1</jats:sup>, nearly three times higher than its oxide counterpart. Further, it shows very stable performance as a high‐temperature (65 °C) anode with ≈180 mAh g<jats:sup>−1</jats:sup> reversible capacity at 100 mA g<jats:sup>−1</jats:sup> current rate. Post‐cycling analysis confirms unchanged morphology, highlighting the structural stability and robustness of WS<jats:sub>2</jats:sub>. DFT calculations show that the electronic bandgap in both WS<jats:sub>2</jats:sub> and WO<jats:sub>3</jats:sub> increases when going from the bulk to monolayers. Na adsorption calculations show that Na atoms bind strongly in WO<jats:sub>3</jats:sub> with a higher energy diffusion barrier when compared to WS<jats:sub>2</jats:sub>, corroborating the experimental findings. This study presents a significant insight into electrode material selection for sodium‐ion storage applications.</jats:p>