Preparation and Electrochemical Properties of Nanometer-Sized Li2TiO3-LiCrO2 Nanocomposite Cathode Powders by Spray Pyrolysis

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The nanometer-sized Li2TiO3-LiCrO2 nanocomposite cathode powders are prepared by spray pyrolysis. The existence of Li2CrO4 glass material during post-treatment is essential to prepare the nanometer-sized Li2TiO3-LiCrO2 nanocomposite powders. The Li2TiO3-LiCrO2 nanocomposite powders washed with distilled water have the mixed crystal structure of the rhombohedral LiCrO2 and the monoclinic Li2TiO3 without impurity. The mean size of the nanocomposite powders post-treated at 750 degrees C is 130 nm. The initial charge and discharge capacities of the nanocomposite powders post-treated at 750 degrees C are 303 and 195 mAh g(-1), respectively. The capacity retention of the nanocomposite powders post-treated at 750 degrees C is 88% after 30 cycles.
Publisher
ESG
Issue Date
2013-02
Language
English
Article Type
Article
Keywords

LITHIUM-ION BATTERIES; MANGANESE OXIDES; ELECTRODES; PERFORMANCE; MN; TI; COMPOSITE; NI; CO

Citation

INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE, v.8, no.2, pp.2504 - 2514

ISSN
1452-3981
URI
http://hdl.handle.net/10203/173823
Appears in Collection
CBE-Journal Papers(저널논문)
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