| 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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Krossing, Ingo
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (12/12 displayed)
- 2023Synthesis and characterization of a stable nickelocenium dication saltcitations
- 2022Isolation and characterization of the homoleptic nii and niii bis‐benzene sandwich cationscitations
- 2021Investigations toward a Non-Aqueous Hybrid Redox-Flow Battery with a Manganese-Based Anolyte and Catholytecitations
- 2021Investigations toward a non‐aqueous hybrid redox‐flow battery with a manganese‐based anolyte and catholytecitations
- 2021Fluorination of Ni‐Rich lithium‐ion battery cathode materials by fluorine gas: chemistry, characterization, and electrochemical performance in full‐cellscitations
- 2021Chasing the mond cation: synthesis and characterization of the homoleptic nickel tetracarbonyl cation and its tricarbonyl‐nitrosyl analoguecitations
- 2018Lithium Bis(2,2,2-trifluoroethyl)phosphate Li[O2P(OCH2CF3)2]: a high voltage additive for LNMO/graphite cellscitations
- 2018Synthesis, Characterisation and Reactions of Truly Cationic Ni(I)–Phosphine Complexescitations
- 2015Electrochemical contact separation for PVD aluminum back contact solar cellscitations
- 2014Plating processes on aluminum and application to novel solar cell conceptscitations
- 2007The dielectric response of room-temperature ionic liquids: Effect of cation variationcitations
- 2005Studies on the synthesis, structure and reactivity of heterocyclic metallonitridophosphinatescitations
Places of action
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article
Fluorination of Ni‐Rich lithium‐ion battery cathode materials by fluorine gas: chemistry, characterization, and electrochemical performance in full‐cells
Abstract
The mild fluorination of Ni‐rich NCM CAMs (NCM=nickel‐cobalt‐manganese oxide; CAM=cathode active material) with a few hundred mbar of elementary fluorine gas (F2) at room temperature was systematically studied. The resulting fluorinated CAMs were fully analyzed and compared to the pristine ones. Fluorination at room temperature converts part of the soluble basic species on the CAM‐surface into a protecting thin and amorphous LiF film. No formation of a metal fluoride other than LiF was detected. SEM images revealed a smoothened CAM surface upon fluorination, possibly due to the LiF film formation. Apparently due to this protecting, but insulating LiF‐film, the fluorinated material has a reduced electrical conductivity in comparison to the pristine material. Yet, all fluorinated Ni‐rich NCM CAMs showed a considerably higher press density than the pristine material, which in addition increased with higher fluoride concentrations. In addition, fluorination of the Ni‐rich CAMs led to the chemically induced formation of small amounts of water, which according to TGA‐MS‐measurements can be removed by heating the material to 450 °C for a few hours. Overall, the tested fluorinated NCM 811 samples showed improved electrochemical performance over the pristine samples in full‐cells with graphite anodes at 30 °C and 45 °C after 500 cycles. Moreover, the fluorination apparently reduces Mn and Co cross talk from the CAM to the anode active material (AAM) through the electrolyte during charge/discharge.