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Novel synthesis and electrochemical investigations of ZnO/C composites for lithium-ion batteries

For the first time, ZnO/C composites were synthesized using zinc glycerolate as a precursor through one-step calcination under a nitrogen atmosphere. The effect of the heat treatment conditions on the structure, composition, morphology as well as on the electrochemical properties regarding applicati...

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Hauptverfasser: Thauer, Elisa (VerfasserIn) , Zakharova, G. S. (VerfasserIn) , Andreikov, E. I. (VerfasserIn) , Adam, Viktor (VerfasserIn) , Wegener, Simon (VerfasserIn) , Nölke, Jan-Hinrich (VerfasserIn) , Singer, Lennart (VerfasserIn) , Ottmann, Alexander (VerfasserIn) , Asyuda, A. (VerfasserIn) , Zharnikov, Michael (VerfasserIn) , Kiselkov, D. M. (VerfasserIn) , Zhu, Q. (VerfasserIn) , Puzyrev, I. S. (VerfasserIn) , Podval’naya, N. V. (VerfasserIn) , Klingeler, Rüdiger (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 12 May 2021
In: Journal of materials science
Year: 2021, Jahrgang: 56, Heft: 23, Pages: 13227-13242
ISSN:1573-4803
DOI:10.1007/s10853-021-06125-4
Online-Zugang:Verlag, kostenfrei, Volltext: https://doi.org/10.1007/s10853-021-06125-4
Volltext
Verfasserangaben:E. Thauer, G.S. Zakharova, E. I. Andreikov, V. Adam, S.A. Wegener, J. -H. Nölke, L. Singer, A. Ottmann, A. Asyuda, M. Zharnikov, D.M. Kiselkov, Q. Zhu, I.S. Puzyrev, N.V. Podval’naya, and R. Klingeler
Beschreibung
Zusammenfassung:For the first time, ZnO/C composites were synthesized using zinc glycerolate as a precursor through one-step calcination under a nitrogen atmosphere. The effect of the heat treatment conditions on the structure, composition, morphology as well as on the electrochemical properties regarding application in lithium-ion batteries are investigated. The products obtained by calcination of the precursor in nitrogen at 400—800 °C consist of zinc oxide nanoparticles and amorphous carbon that is in-situ generated from organic components of the glycerolate precursor. When used as anode material for lithium-ion batteries, the as-prepared ZnO/C composite synthesized at a calcination temperature of 700 °C delivers initial discharge and charge capacities of 1061 and 671 mAh g−1 at a current rate of 100 mA g−1 and hence 1.5 times more than bare ZnO, which reaches only 749/439 mAh g−1. The native carbon improves the conductivity, allowing efficient electronic conductivity and Li-ion diffusion. By means of ex-situ XRD studies a two-step storage mechanism is proven.
Beschreibung:Gesehen am 27.07.2022
Beschreibung:Online Resource
ISSN:1573-4803
DOI:10.1007/s10853-021-06125-4

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