| 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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Bøjesen, Espen Drath
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2024Elucidating Structural Disorder in Ultra-Thin Bi-Rich Bismuth Oxyhalide Photocatalystscitations
- 2024Elucidating Structural Disorder in Ultra-Thin Bi-Rich Bismuth Oxyhalide Photocatalystscitations
- 2024Non-monotonic dependence of high-temperature stability of stone wool fibres on pre-oxidation time and temperaturecitations
- 2024Non-monotonic dependence of high-temperature stability of stone wool fibres on pre-oxidation time and temperaturecitations
- 2023The more the better:on the formation of single-phase high entropy alloy nanoparticles as catalysts for the oxygen reduction reactioncitations
- 2022Volume imaging by tracking sparse topological features in electron micrograph tilt series
- 2020Probing the validity of the spinel inversion model: a combined SPXRD, PDF, EXAFS and NMR study of $ZnAl_{2}O_{4}$citations
- 2020Probing the validity of the spinel inversion model:a combined SPXRD, PDF, EXAFS and NMR study of ZnAl 2 O 4citations
- 2017In Situ PDF Study of the Nucleation and Growth of Intermetallic PtPb Nanocrystalscitations
- 2016Crystal structure, microstructure and electrochemical properties of hydrothermally synthesised LiMn2O4citations
- 2016Towards atomistic understanding of polymorphism in the solvothermal synthesis of ZrO2 nanoparticlescitations
- 2014Characterization of the interface between an Fe–Cr alloy and the p-type thermoelectric oxide Ca3Co4O9citations
- 2014Characterization of the interface between an Fe–Cr alloy and the p -type thermoelectric oxide Ca 3 Co 4 O 9citations
- 2013In-situ synchrotron PXRD study of spinel LiMn2O4 nanocrystal formation
- 2013IN-SITU SYNCHROTRON PXRD STUDY OF SPINEL TYPE LiMn2O4 NANOCRYSTAL FORMATION
Places of action
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article
Crystal structure, microstructure and electrochemical properties of hydrothermally synthesised LiMn2O4
Abstract
<p>The hydrothermal synthesis method offers an environmentally benign way of synthesizing Li-ion battery materials with strong control of particle size and morphology, and thereby also the electrochemical performance. Here we present an in depth investigation of the crystal structure, microstructure and electrochemical properties of hydrothermally synthesized LiMn<sub>2</sub>O<sub>4</sub>, which is a widely used cathode material. A range of samples were synthesized by a simple, single-step hydrothermal route, and the products were characterized by elaborate Rietveld refinement of powder X-ray diffraction data, electron microscopy and electrochemical analysis. A distinct bimodal crystallite size distribution of LiMn<sub>2</sub>O<sub>4</sub> was formed together with a Mn<sub>3</sub>O<sub>4</sub> impurity. At high LiOH concentration the layered Li<sub>x</sub>Mn<sub>y</sub>O<sub>2</sub> phase was formed. The crystallite sizes and impurity weight fractions were found to be highly synthesis dependent, and the amount of spinel impurity phase was found to correlate with deterioration of the electrochemical performance. The Mn<sub>3</sub>O<sub>4</sub> phase can be very difficult to quantify in standard powder X-ray diffraction and due to peak overlap and X-ray fluorescence impurity levels of more than 10% are easily hidden. Furthermore, the spinel LiMn<sub>2</sub>O<sub>4</sub> phase can easily be mistaken for the layered Li<sub>x</sub>Mn<sub>y</sub>O<sub>2</sub> phase. The present study therefore highlights the importance of thorough structural characterization in studies of battery materials.</p>