| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Heitjans, Paul
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (21/21 displayed)
- 2023Lithium Niobate for Fast Cycling in Li-ion Batteries: Review and New Experimental Resultscitations
- 2018Ion dynamics in a new class of materials: nanoglassy lithium alumosilicates
- 2017Structure and ion dynamics of mechanosynthesized oxides and fluorides
- 2016Single-crystal neutron diffraction on γ-LiAlO2: structure determination and estimation of lithium diffusion pathway
- 2016A novel low-temperature solid-state route for nanostructured cubic garnet Li 7 La 3 Zr 2 O 12 and its application to Li-ion battery
- 2016Solid-state diffusion and NMR
- 2015Synthesis and Electrochemical Behavior of Nanostructured Copper Particles on Graphite for Application in Lithium Ion Batteries
- 2015A simple and straightforward mechanochemical synthesis of the far-from-equilibrium zinc aluminate, ZnAl2O4, and its response to thermal treatment
- 2014Theoretical study of Li migration in lithium-graphite intercalation compounds with dispersion-corrected DFT methodscitations
- 2012The ionic conductivity in lithium-boron oxide materials and its relation to structural, electronic and defect propertiescitations
- 2012Self-diffusion of lithium in amorphous lithium niobate layers
- 2011Structure and dynamics of the fast lithium ion conductor "li 7La3Zr2O12"
- 2010Mössbauer Spectroscopy for Studying Chemical Reactions
- 2010Ion Transport Properties of the Inverse Perovskite BaLiF3 Prepared by High-Energy Ball Milling
- 2009Li Ion diffusion in nanocrystalline and nanoglassy LiAISi2O 6 and LiBO2 - Structure dynamics relations in two glass forming compounds
- 2007Enhanced conductivity at the interface of Li2O:B2O3 nanocompositescitations
- 2007Enhanced conductivity at the interface of Li2O:B2O3 nanocomposites: Atomistic models
- 2005Ion hopping in crystalline and glassy spodumene LiAlSi2O6: Li7 spin-lattice relaxation and Li7 echo NMR spectroscopy
- 2005Fast dynamics of H2O in hydrous aluminosilicate glasses studied with quasielastic neutron scattering
- 2005Solid-State Diffusion and NMR
- 2000Nanocrystalline versus microcrystalline Lo2O:B2O 3 composites: Anomalous ionic conductivities and percolation theory
Places of action
| Organizations | Location | People |
|---|
article
Lithium Niobate for Fast Cycling in Li-ion Batteries: Review and New Experimental Results
Abstract
<jats:p>Li-Nb-O-based insertion layers between electrodes and electrolytes of Li-ion batteries (LIBs) are known to protect the electrodes and electrolytes from unwanted reactions and to enhance Li transport across interfaces. An improved operation of LIBs, including all-solid-state LIBs, is reached with Li-Nb-O-based insertion layers. This work reviews the suitability of polymorphic Li-Nb-O-based compounds (e.g., crystalline, amorphous, and mesoporous bulk materials and films produced by various methodologies) for LIB operation. The literature survey on the benefits of niobium-oxide-based materials for LIBs, and additional experimental results obtained from neutron scattering and electrochemical experiments on amorphous LiNbO3 films are the focus of the present work. Neutron reflectometry reveals a higher porosity in ion-beam sputtered amorphous LiNbO3 films (22% free volume) than in other metal oxide films such as amorphous LiAlO2 (8% free volume). The higher porosity explains the higher Li diffusivity reported in the literature for amorphous LiNbO3 films compared to other similar Li-metal oxides. The higher porosity is interpreted to be the reason for the better suitability of LiNbO3 compared to other metal oxides for improved LIB operation. New results are presented on gravimetric and volumetric capacity, potential-resolved Li+ uptake and release, pseudo-capacitive fractions, and Li diffusivities determined electrochemically during long-term cycling of LiNbO3 film electrodes with thicknesses between 14 and 150 nm. The films allow long-term cycling even for fast cycling with rates of 240C possessing reversible capacities as high as 600 mAhg−1. Electrochemical impedance spectroscopy (EIS) shows that the film atomic network is stable during cycling. The Li diffusivity estimated from the rate capability experiments is considerably lower than that obtained by EIS but coincides with that from secondary ion mass spectrometry. The mostly pseudo-capacitive behavior of the LiNbO3 films explains their ability of fast cycling. The results anticipate that amorphous LiNbO3 layers also contribute to the capacity of positive (LiNixMnyCozO2, NMC) and negative LIB electrode materials such as carbon and silicon. As an outlook, in addition to surface-engineering, the bulk-engineering of LIB electrodes may be possible with amorphous and porous LiNbO3 for fast cycling with high reversible capacity.</jats:p>