Room temperature, liquid-phase Al2O3 surface coating approach for Ni-rich layered oxide cathode materialElectronic supplementary information (ESI) available: Experimental details; rate performance data; differential capacity curves; Nyquist plots; and additional cycling data. See DOI: 10.1039/c8cc09618j

A room temperature, atomic-layer-deposition-like coating strategy for NCM811 (80% Ni) is reported. Trimethylaluminum is shown to readily react with adsorbed moisture, leading both to Al 2 O 3 surface layer formation on NCM811 and to trace H 2 O removal in a single treatment step. Even more important...

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Bibliographic Details
Main Authors Neudeck, Sven, Strauss, Florian, Garcia, Grecia, Wolf, Hannes, Janek, Jürgen, Hartmann, Pascal, Brezesinski, Torsten
Format Journal Article
LanguageEnglish
Published 14.02.2019
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Summary:A room temperature, atomic-layer-deposition-like coating strategy for NCM811 (80% Ni) is reported. Trimethylaluminum is shown to readily react with adsorbed moisture, leading both to Al 2 O 3 surface layer formation on NCM811 and to trace H 2 O removal in a single treatment step. Even more importantly, the cycling performance of pouch cells at 45 °C is greatly improved. Solution-based trimethylaluminum treatment of NCM811 cathode material leads to drying and coating in a single step and therefore improved cycling performance.
Bibliography:10.1039/c8cc09618j
Electronic supplementary information (ESI) available: Experimental details; rate performance data; differential capacity curves; Nyquist plots; and additional cycling data. See DOI
ISSN:1359-7345
1364-548X
DOI:10.1039/c8cc09618j