| 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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Wohlfahrt-Mehrens, Margret
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (8/8 displayed)
- 2024Lithium Redistribution Mechanism within Silicon-Graphite Electrodes: Multi-Method Approach and Method Validationcitations
- 2024Observation of preferential sputtering of Si/graphite anodes from Li-ion cells by GD-OES and its validation by neutron depth profilingcitations
- 2023Origin of Aging of a P2-Na$_x$Mn$_{3/4}$Ni$_{1/4}$O$_2$ Cathode Active Material for Sodium-Ion Batteriescitations
- 2023Borate-Coated Co-Free LiNi<sub>0.5</sub>Mn<sub>1.5</sub>O<sub>4</sub>: Enhanced Performance and Stability for High-Power-Density Libscitations
- 2022Detection of Li Deposition on Si/Graphite Anodes from Commercial Li-Ion Cells: A Post-Mortem GD-OES Depth Profiling Study
- 2022Layered P2-NaxMn3/4Ni1/4O2 cathode materials for sodium-ion batteries : synthesis, electrochemistry and influence of ambient storage
- 2021Cu dissolution during over-discharge of li-ion cells to 0 V: a post-mortem study
- 2020Mechanistic details of the spontaneous intercalation of Li metal into graphite electrodem
Places of action
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document
Borate-Coated Co-Free LiNi<sub>0.5</sub>Mn<sub>1.5</sub>O<sub>4</sub>: Enhanced Performance and Stability for High-Power-Density Libs
Abstract
<jats:p>Cobalt free LiNi<jats:sub>0.5</jats:sub>Mn<jats:sub>1.5</jats:sub>O<jats:sub>4</jats:sub> (LNMO), also known as high-voltage spinel, has emerged as a promising cathode material for high energy-density and high power-density lithium-ion batteries (LIBs), making it a viable candidate for applications in large-scale energy storage systems (ESS) and transportation (1-5). Despite its potential, LNMO faces challenges, such as rapid capacity degradation and the formation of an unstable cathode electrolyte interphase (CEI), which have impeded its commercialization(4-5). To address these issues, we present a cost-effective and scalable approach involving the application of a borate-based surface coating to LNMO (borate-LNMO). In this study, we systematically applied varying amounts of borate coating to LNMO and assessed their electrochemical performance in both half- and full-cell configurations. Initial optimization of the coating amount revealed that borate-LNMO materials exhibited superior rate capability, and enhanced stability when compared to bare LNMO. Float testing demonstrated a stable LNMO/electrolyte interface for borate-LNMO materials, in contrast to the continuous increase in leakage (parasitic current) observed with bare LNMO over time. Furthermore, borate-LNMO materials exhibited superior cycling performance in full-cell setups, both at ambient (25℃) and elevated (45℃) temperatures. This enhanced performance can be attributed to the formation of relatively stable CEI and SEI interphases, resulting in reduced electrolyte decomposition, lower transition metal dissolution at the LNMO/electrolyte interface, and minimized cross-talk between the cathode and anode. Post-mortem SEM analysis of the cycled graphite anodes revealed a thicker and denser SEI in bare LNMO cells, whereas borate-LNMO cells exhibited a thinner and porous SEI. These findings suggest that borate-coated LNMO could be a promising solution for cost-effective and high-power LIBs.</jats:p>