Synthesis and Characterization of the Positive Electrode Material LiFePO4/C under Different Microwave Heating Time

Abstract:

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The precursors of LiFePO4 were prepared by a sol-gel method using lithium acetate dehyd- rate, phosphoric acid, ferrous sulfate, and citric acid as raw materials. LiFePO4/C cathode material was synthesized by microwave method. The effect of different microwave time on the performance of the resulting LiFePO4/C was investigated. Structural characterization by X-ray diffraction and scann- ing electron microscopy proved that the phase LiFePO4 was synthesized under the optimal conditions of microwave 10 min(600W), the charge-discharge performance indicated that the LiFePO4/C had a maximal specific discharge capacity of 122.5 mAh•g-1 (0.1C) in the first cycle and improve capacity retention. Further AC impendence measurements indicate the sample produced by microwave 10 min shows the low charge transfer resistance.

Info:

Periodical:

Advanced Materials Research (Volumes 287-290)

Edited by:

Jinglong Bu, Pengcheng Wang, Liqun Ai, Xiaoming Sang, Yungang Li

Pages:

1477-1480

DOI:

10.4028/www.scientific.net/AMR.287-290.1477

Citation:

H. Wang et al., "Synthesis and Characterization of the Positive Electrode Material LiFePO4/C under Different Microwave Heating Time", Advanced Materials Research, Vols. 287-290, pp. 1477-1480, 2011

Online since:

July 2011

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Price:

$35.00

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