Journal
MATERIALS LETTERS
Volume 60, Issue 27, Pages 3212-3216Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2006.02.074
Keywords
nano materials; thermal properties; differential scanning calorimetry; infrared spectroscopy; X-ray diffraction; electrochemical activity
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Nanocrystalline LiMn2O4 powders were synthesized by Pechini process using metal nitrates/acetates as metal ion sources, citric acid and polyethylene glycol-400. Effect of calcining temperature on the electrochemical performance of nanocrystalline LiMn2O4 powders was investigated. Thermal decomposition of polymeric intermediate was investigated through DSC thermogram. FT-IR was used to identify the structural coordination of as prepared and calcined polymeric intermediate. The phase of the synthesized LiMn2O4 powder was confirmed by comparing the obtained XRD patterns with the JCPDS standard. CV and battery cyclic studies showed that the better electrochemical activity for LiMn2O4 compound, prepared at 750 degrees C, with a discharge capacity of about 110 mAh g(-1). (c) 2006 Elsevier B.V. All rights reserved.
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