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Morphology and Electrical Properties of Nano-Sized LiFePO4 Cathode Materials

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Abstract:

Nano- and micro-scaled LiFePO4 was synthesized by hydrothermal synthesis method using disodium ethylenediamine tetraacetate (Na2EDTA)-assisted to avoid the Fe(II) ions from oxidation and control the growth of the crystal. The as-synthesized samples were characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), The SEM showed that the pH value of the synthesis solution played a key role in the formation of the final products with different morphologies. Charge–discharge cycling performances were used to characterize its electrochemical properties. The results indicated that the nano-sized LiFePO4 presents enhanced discharge capacities (148 mAhg−1 at 0.1C-rate) and stable cycling performance. This study offered a simple method to design and synthesis nano-sized cathode materials for lithium-ion batteries.

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Periodical:

Advanced Materials Research (Volumes 295-297)

Pages:

1160-1163

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.295-297.1160

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Online since:

July 2011

Authors:

Hao Yan, Yun Hua Xu, Juan Wang, Chong Yang Shao

Keywords:

Hydrothermal, LiFePO4/C, Lithium-Ion Battery, Nanoparticle

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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