Journal
ELECTROCHIMICA ACTA
Volume 108, Issue -, Pages 820-826Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2013.06.130
Keywords
alpha-LiFeO2-PPy nanocomposite; Microwave hydrothermal; Lithium-ion batteries; Cathode
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Funding
- Australian Research Council (ARC) Discovery Project [DP100103909]
- China Scholarship Council (CSC)
- Grants-in-Aid for Scientific Research [22550169, 25410256] Funding Source: KAKEN
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A conducting alpha-LiFeO2-polypyrrole (alpha-LiFeO2-PPy) nanocomposite material was prepared by the chemical polymerization method as a cathode material for lithium-ion batteries. The porous alpha-LiFeO2 was prepared via the microwave hydrothermal method and a post-annealing. The X-ray diffraction, Fourier transform infrared spectroscopy, and field emission scanning electron microscopy measurements showed that the alpha-LiFeO2 nanoparticles were coated with PPy. The polypyrrole coating improves the reversible capacity and cycling stability (104 mAh g(-1) at 0.1C after 100 cycles) for lithium-ion batteries. Even at the high rate of 10C, the electrode showed more than 40% of the capacity at low rate (0.1C). (C) 2013 Elsevier Ltd. All rights reserved.
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