| 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 |
|
Sharma, Neeraj
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2023Prospects of non-linear optical behaviour of PZT/ZnO heterostructurescitations
- 2022Qualitative analysis of PZT (52/48) MPB using different synthesis methodscitations
- 2022Importance of Superstructure in Stabilizing Oxygen Redox in P3-Na0.67Li0.2Mn0.8O2citations
- 2022Importance of superstructure in stabilizing oxygen redox in P3- Na0.67Li0.2Mn0.8O2citations
- 2022Importance of superstructure in stabilizing oxygen redox in P3- Na 0.67 Li 0.2 Mn 0.8 O 2citations
- 2021Importance of superstructure in stabilizing oxygen redox in P3- Na0.67Li0.2Mn0.8O2citations
- 2020In situ synchrotron XRD and sXAS studies on Li-S batteries with ionic-liquid and organic electrolytescitations
- 2020Multifunctional behavior of acceptor-cation substitution at higher doping concentration in PZT ceramicscitations
- 2019Multifunctional behavior of acceptor-cation substitution at higher doping concentration in PZT ceramicscitations
- 2019The Australian Battery Landscape
- 2018Structural evolution and stability of Sc 2 (WO 4 ) 3 after discharge in a sodium-based electrochemical cellcitations
- 2018From Lithium Metal to High Energy Batteries
- 2014Structural evolution of high energy density V3+/V4+ mixed valent Na3V2O2x(PO4)2F3−2x (x = 0.8) sodium vanadium fluorophosphate using in situ synchrotron X-ray powder diffractioncitations
- 2014Local structural changes in $LiMn_{1.5}Ni_{0.5}O_{4}$ spinel cathode material for lithium ion batteriescitations
- 2014A Mutagenic Primer Assay for Genotyping of the CRHR1 Gene Rare Variant rs1876828 (A/G) in Asians: A Cost-Effective SNP Typing.
Places of action
| Organizations | Location | People |
|---|
article
Importance of superstructure in stabilizing oxygen redox in P3- Na0.67Li0.2Mn0.8O2
Abstract
Activation of oxygen redox represents a promising strategy to enhance the energy density of positive electrode materials in both lithium and sodium-ion batteries. However, the large voltage hysteresis associated with oxidation of oxygen anions during the first charge represents a significant challenge. Here, P3-type Na<sub>0.67</sub>Li<sub>0.2</sub>Mn<sub>0.8</sub>O<sub>2</sub> is reinvestigated and a ribbon superlattice is identified for the first time in P3-type materials. The ribbon superstructure is maintained over cycling with very minor unit cell volume changes in the bulk while Li ions migrate reversibly between the transition metal and Na layers at the atomic scale. In addition, a range of spectroscopic techniques reveal that a strongly hybridized Mn 3d–O 2p favors ligand-to-metal charge transfer, also described as a reductive coupling mechanism, to stabilize reversible oxygen redox. By preparing materials under three different synthetic conditions, the degree of ordering between Li and Mn is varied. The sample with the maximum cation ordering delivers the largest capacity regardless of the voltage windows applied. These findings highlight the importance of cationic ordering in the transition metal layers, which can be tuned by synthetic control to enhance anionic redox and hence energy density in rechargeable batteries.<br/>