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Doped nanoscale NMC333 as cathode materials for Li-ion batteries

Hashem, A. M.; Abdel-Ghany, A. E.; Scheuermann, M.; Indris, S.; Ehrenberg, H.; Mauger, A.; Julien, C. M.

Abstract (englisch):
A series of Li(Ni1/3Mn1/3Co1/3)1−xMxO2 (M = Al, Mg, Zn, and Fe, x = 0.06) was prepared via sol-gel method assisted by ethylene diamine tetra acetic acid as a chelating agent. A typical hexagonal α-NaFeO2 structure (R-3m space group) was observed for parent and doped samples as revealed by X-ray diffraction patterns. For all samples, hexagonally shaped nanoparticles were observed by scanning electron microscopy and transmission electron microscopy. The local structure was characterized by infrared, Raman, and Mössbauer spectroscopy and 7Li nuclear magnetic resonance (Li-NMR). Cyclic voltammetry and galvanostatic charge-discharge tests showed that Mg and Al doping improved the electrochemical performance of LiNi1/3Mn1/3Co1/3O2 in terms of specific capacities and cyclability. In addition, while Al doping increases the initial capacity, Mg doping is the best choice as it improves cyclability for reasons discussed in this work

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Verlagsausgabe §
DOI: 10.5445/IR/1000098765
Veröffentlicht am 09.10.2019
Coverbild
Zugehörige Institution(en) am KIT Institut für Angewandte Materialien - Energiespeichersysteme (IAM-ESS)
Publikationstyp Zeitschriftenaufsatz
Jahr 2019
Sprache Englisch
Identifikator ISSN: 1996-1944
KITopen-ID: 1000098765
Erschienen in Materials
Band 12
Heft 18
Seiten 2899
Vorab online veröffentlicht am 07.09.2019
Schlagworte sol-gel synthesis; EDTA chelator; cathode materials; layered oxide; doping; lithium-ion batteries
Nachgewiesen in Scopus
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