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Details

Autor(en) / Beteiligte
Titel
High-performance anode based on porous Co3O4 nanodiscs
Ist Teil von
  • Journal of power sources, 2014-06, Vol.255, p.125-129
Ort / Verlag
Amsterdam: Elsevier B.V
Erscheinungsjahr
2014
Link zum Volltext
Quelle
Elsevier ScienceDirect Journals Complete
Beschreibungen/Notizen
  • In this article, two-dimensional, Co3O4 hexagonal nanodiscs are prepared using a hydrothermal method without surfactants. X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM) have been employed to characterize the structural properties. As revealed by the SEM and TEM experiments, the thickness of our as-fabricated Co3O4 hexagonal nanodiscs is about 20 nm, and the pore diameters range from several nanometers to 30 nm. As an anode for lithium-ion batteries, porous Co3O4 nanodiscs exhibit an average discharge voltage of ∼1 V (vs. Li/Li+) and a high specific charge capacity of 1161 mAh g−1 after 100 cycles. They also demonstrate excellent rate performance and high Columbic efficiency at various rates. These results indicate that porous Co3O4 nanodiscs are good candidates as anode materials for lithium-ion batteries. •Porous Co3O4 hexagonal nanodiscs were prepared by a template-free hydrothermal method.•The Co3O4 hexagonal nanodiscs are about 20 nm in thickness and the pore diameters range from several nm to 30 nm.•The Co3O4 hexagonal nanodiscs exhibit excellent electrochemical performance as anode materials for lithium ion batteries.

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