Journal
JOURNAL OF POWER SOURCES
Volume 246, Issue -, Pages 124-131Publisher
ELSEVIER
DOI: 10.1016/j.jpowsour.2013.07.055
Keywords
Lithium ion battery; Cathode materials; Li3V2(PO4)(3); Microwave-assisted hydrothermal method; Ionic liquids
Funding
- Australian Research Council [DP110103909]
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A high performance Li3V2(PO4)(3) cathode material for lithium ion batteries was synthesized by the microwave-assisted hydrothermal method followed by a post annealing process. The synchrotron X-ray diffraction analysis results confirmed that single-phase Li3V2(PO4)(3) with monoclinic structure was obtained. Scanning electron microscope and transmission electron microscope images revealed that the as-prepared Li3V2(PO4)(3) was composed of nanowires and microsized particles. Electrochemical results demonstrated that the Li3V2(PO4)(3) electrode measured at 10 C after 500 cycles can deliver discharge capacities of 85.4 mAh g(-1) and 103.4 mAh g(-1), with a capacity retention of 99.3% and 95.9%, in the voltage ranges of 3.0-4.3 V and 3.0-4.8 V, respectively, indicating good cycling stability. Furthermore, the electrochemical performance of Li3V2(PO4)(3) in ionic liquid electrolytes between 3.0 V and 4.8 V was also measured. (C) 2013 Elsevier B.V. All rights reserved.
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