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Nanosheets-based ZnO-NiO microspheres for lithium-ion batteries.
- Source :
- Journal of Materials Science: Materials in Electronics; Jul2015, Vol. 26 Issue 7, p5279-5286, 8p
- Publication Year :
- 2015
-
Abstract
- Nanosheets-based ZnO-NiO microspheres were synthesized by a simple hydrothermal route combined with subsequent heat treatment at moderate temperature. The physical properties of the resulting samples were characterized by scanning electron microscopy, transmission electron microscope, and X-ray diffraction, respectively. The results show that composite materials, nanosheets-based ZnO-NiO microspheres have been successfully synthesized. For comparison, nanosheets-based ZnO or NiO microspheres were also prepared in the similar method. The nanosheets-based ZnO-NiO microspheres obtained after annealing at 500 °C showed a remarkable composite effect, delivering a higher discharge capacity (733 mAh g at 100 mA g after 50 cycles) and excellent cycling stability in comparison to those of single ZnO or NiO nanosheets. These findings make ZnO-NiO microspheres promising anodes for lithium-ion batteries. The results of this study also offer possibilities of improving the lithium storage capacity of transition metal oxides by controlling both architecture and composition. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09574522
- Volume :
- 26
- Issue :
- 7
- Database :
- Complementary Index
- Journal :
- Journal of Materials Science: Materials in Electronics
- Publication Type :
- Academic Journal
- Accession number :
- 103365003
- Full Text :
- https://doi.org/10.1007/s10854-015-3064-6