Cobalt oxide hollow microspheres with micro- and nano-scale composite structure: Fabrication and electrochemical performance
- State Key Laboratory of Coordination Chemistry, Laboratory of Solid State Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093 (China)
- Department of Chemistry, Qinghua University, Beijing 100084 (China)
Co{sub 3}O{sub 4} hollow microspheres with micro- and nano-scale composite structure self-assembled by nanosheets were successfully fabricated by the template-free wet-chemical approach. This method is simple, facile and effective. The Co{sub 3}O{sub 4} hollow microspheres with good purity and homogeneous size were well characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform IR (FTIR), thermogravimetric analysis (TGA) and inductively coupled plasma atomic emission spectrometer (ICP). The formation mechanism was deeply studied. The micro- and nano-scale composite structure constructed by the porous nanosheets promotes to improve the electrochemical properties of Co{sub 3}O{sub 4} hollow microspheres. The high discharge capacity of 1048 mAh g{sup -1} indicates it to be the potential application in electrode materials of Li-ion battery. - Graphical Abstract: Co{sub 3}O{sub 4} hollow microspheres self-assembled by nanosheets are successfully fabricated by a template-free wet-chemical approach. The hollow microspheres are in good morphology purity and homogeneous size. Co{sub 3}O{sub 4} hollow microspheres constructed by porous nanosheets show the high discharge capacity of 1048 mAh g{sup -1}, indicating it to be the potential electrode material of Li-ion battery.
- OSTI ID:
- 21370377
- Journal Information:
- Journal of Solid State Chemistry, Vol. 182, Issue 5; Other Information: DOI: 10.1016/j.jssc.2009.01.030; PII: S0022-4596(09)00039-5; Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
COBALT OXIDES
ELECTROCHEMISTRY
INFRARED SPECTRA
MICROSPHERES
NANOSTRUCTURES
SCANNING ELECTRON MICROSCOPY
THERMAL GRAVIMETRIC ANALYSIS
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
CHALCOGENIDES
CHEMICAL ANALYSIS
CHEMISTRY
COBALT COMPOUNDS
COHERENT SCATTERING
DIFFRACTION
ELECTRON MICROSCOPY
GRAVIMETRIC ANALYSIS
MICROSCOPY
OXIDES
OXYGEN COMPOUNDS
QUANTITATIVE CHEMICAL ANALYSIS
SCATTERING
SPECTRA
THERMAL ANALYSIS
TRANSITION ELEMENT COMPOUNDS