Journal
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
Volume 414, Issue -, Pages 204-208Publisher
ELSEVIER
DOI: 10.1016/j.colsurfa.2012.08.023
Keywords
Nanoparticles; Anode; Supercapacitor; Lithium ion battery
Categories
Funding
- Alexander von Humboldt Foundation
- SUBR [W911NF-08-C-0415]
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Nanosized NiO anode material was synthesized for lithium ion batteries and supercapacitor applications using pyrolysis of an oxalate precursor, which was prepared by a rheological phase reaction from nickel carbonate hydrate and oxalic acid. The obtained material was characterized with X-ray diffraction (XRD), differential scanning calorimetry-thermogravimetric analysis (DSC-TGA), scanning electron microscopy (SEM) and transition electron microscopy (TEM). Cyclic voltammetry was conducted to examine the capacitive behavior of working electrodes made from these new NiO nanoparticles. X-ray diffraction results show that the particle size of the nanomaterials increases with increasing calcination temperature. The anode made from NiO at 400 degrees C shows a higher specific capacity (1188 mAh/g) than the anode made from NiO at 500 degrees C (1010 mAh/g). The better electrochemical behavior of the material prepared at 400 degrees C is attributed to higher porosity in the material. (c) 2012 Elsevier B.V. All rights reserved.
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