| 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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Walker, David
University of Warwick
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (17/17 displayed)
- 2024Untangling free carrier and exciton dynamics in layered hybrid perovskites using ultrafast optical and terahertz spectroscopycitations
- 2023Untangling free carrier and exciton dynamics in layered hybrid perovskites using ultrafast optical and terahertz spectroscopycitations
- 2023Operando X-ray and Post-mortem Investigations of Electrochemical Degradation in Single-crystalline LiNi0.8Mn0.1Co0.1O2–Graphite pouch cellscitations
- 2023Tetragonal Kondo Insulator EuCd2Sb2 Discovered via High Pressure High Temperature Synthesiscitations
- 2023Quantifying electrochemical degradation in single-crystalline LiNi0.8Mn0.1Co0.1O2–graphite pouch cells through operando X-ray and post-mortem investigations
- 2023Data for Influence of co-reactants on surface passivation by nanoscale hafnium oxide layers grown by atomic layer deposition on siliconcitations
- 2023Hafnium oxide : a thin film dielectric with controllable etch resistance for semiconductor device fabricationcitations
- 2020Ambient and high pressure CuNiSb₂citations
- 2019Advanced steam measurement techniques: a study of how electrical capacitance measurements are affected by the spatial positioning of water within wet steam
- 2018MnFe0.5Ru0.5O3: An Above-Room-Temperature Antiferromagnetic Semiconductorcitations
- 2018Synthesizing bijective lensescitations
- 2018Cs1−xRbxSnI3 light harvesting semiconductors for perovskite photovoltaicscitations
- 2018Cs 1-: X Rb x SnI 3 light harvesting semiconductors for perovskite photovoltaicscitations
- 2015Thermal, compositional, and compressional demagnetization of cementitecitations
- 2015Structural, optical and vibrational properties of self-assembled Pbn+1(Ti1−xFex)nO3n+1−δ Ruddlesden-Popper superstructurescitations
- 2013Thin film LaYbO3 capacitive structures grown by pulsed laser depositioncitations
- 2001Synthesis and thermal decomposition of tetragonal RbClO4 and volume of fluid O2 from 2 to 9 GPacitations
Places of action
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document
Operando X-ray and Post-mortem Investigations of Electrochemical Degradation in Single-crystalline LiNi0.8Mn0.1Co0.1O2–Graphite pouch cells
Abstract
<jats:p>Layered nickel-rich lithium transition metal oxides (LiNixMnyCo1−x−yO2; where x ≥ 0.8), with single-crystalline morphology, are promising future high-energy-density Li-ion battery cathodes due to their ability to mitigate particle-cracking-induced degradation. This is due to the absence of grain boundaries in these materials, which prevents the build-up of bulk crystallographic strain during electrochemical cycling. However, compared to their polycrystalline counterparts, there is a need to study single-crystalline Ni-rich cathodes using operando X-ray methods in uncompromised machine-manufactured industry-like full cells to understand their degradation mechanism. This can, in turn, help us identify factors to improve their long-term performance. Here, through in-house operando X-ray studies of pilot-line-built LiNi0.8Mn0.1Co0.1O2–Graphite A7 pouch cells, it is shown that their electrochemical degradation under harsh conditions (2.5–4.4 V at 40 °C for 100 cycles) primarily stems from the decreasing abundance of electrochemically active Li+ species as a result of electrode surface layer growth. Post-mortem electron imaging and tomography show that these cathodes can withstand severe anisotropic structural changes and show no cracking, even when cycled under such harsh conditions. These results are then benchmarked and contrasted with those from commercial Li-ion cells incorporating surface-modified Ni-rich cathodes, enabling us to identify the advantages of cathode surface passivation in prolonging cycle life. In addition to furthering our understanding of degradation in single-crystalline Ni-rich cathodes, this work also accentuates the need for practically relevant and reproducible fundamental investigations of Li-ion cells and presents a methodology for achieving this.</jats:p>