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Hollow carbon sphere/metal oxide nanocomposites anodes for lithium-ion batteries

HCS (Hollow carbon spheres) covered with metal oxide nanoparticles (SnO2 and MnO2, respectively) were successfully synthesized and investigated regarding their potential as anode materials for lithium-ion batteries. Raman spectroscopy shows a high degree of graphitization for the HCS host structure....

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Hauptverfasser: Wenelska, Karolina (VerfasserIn) , Ottmann, Alexander (VerfasserIn) , Thauer, Elisa (VerfasserIn) , Klingeler, Rüdiger (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 19 March 2016
In: Energy
Year: 2016, Jahrgang: 103, Pages: 100-106
ISSN:1873-6785
DOI:10.1016/j.energy.2016.02.063
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.energy.2016.02.063
Verlag, lizenzpflichtig, Volltext: http://www.sciencedirect.com/science/article/pii/S0360544216301141
Volltext
Verfasserangaben:K. Wenelska, A. Ottmann, P. Schneider, E. Thauer, R. Klingeler, E. Mijowska
Beschreibung
Zusammenfassung:HCS (Hollow carbon spheres) covered with metal oxide nanoparticles (SnO2 and MnO2, respectively) were successfully synthesized and investigated regarding their potential as anode materials for lithium-ion batteries. Raman spectroscopy shows a high degree of graphitization for the HCS host structure. The mesoporous nature of the nanocomposites is confirmed by Brunauer-Emmett-Teller analysis. For both metal oxides under study, the metal oxide functionalization of HCS yields a significant increase of electrochemical performance. The charge capacity of HCS/SnO2 is 370 mA hg−1 after 45 cycles (266 mA hg−1 in HCS/MnO2) which clearly exceeds the value of 188 mA hg−1 in pristine HCS. Remarkably, the data imply excellent long term cycling stability after 100 cycles in both cases. The results hence show that mesoporous HCS/metal oxide nanocomposites enable exploiting the potential of metal oxide anode materials in Lithium-ion batteries by providing a HCS host structure which is both conductive and stable enough to accommodate big volume change effects.
Beschreibung:Gesehen am 18.06.2020
Beschreibung:Online Resource
ISSN:1873-6785
DOI:10.1016/j.energy.2016.02.063

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