Journal
ELECTROCHIMICA ACTA
Volume 55, Issue 28, Pages 8981-8985Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2010.08.039
Keywords
NiO; Hollow sphere; Anode; Lithium ion battery
Categories
Funding
- China Postdoctoral Science Foundation [20090461109]
- Jiangsu Postdoctoral Science Research Foundation [0902015C]
- Science Foundation of Nanjing University of Aeronautics and Astronautics [909388]
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NiO hollow spheres are prepared by heating the NiCl2/resoicinol-formaldehyde (RF) gel in argon at 700 C for 2 h and subsequently in oxygen at 700 degrees C for 2 h X-ray diffraction (XRD) scanning electron microscopy (SEM) and transmission electron microscopy (TEM) are employed to characterize the structure and morphology of the as-prepared NiO hollow spheres These hollow spheres have a diameter of about 2 mu m which are composed of NiO particles of about 200 nm The electrochemical properties of these NiO hollow spheres are investigated to determine the reversible capacity and cycling performance as anode materials for lithium-ion batteries and the advantages of their hollow spherical morphology to the electrochemical performance are discussed (C) 2010 Elsevier Ltd All rights reserved
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