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✦   LIBER   ✦

Synthesis and electrochemical performance of Li2FeSiO4/carbon/carbon nano-tubes for lithium ion battery

✍ Scribed by Xiaobing Huang; Xing Li; Haiyan Wang; Zhonglai Pan; Meizhen Qu; Zuolong Yu

Publisher
Elsevier Science
Year
2010
Tongue
English
Weight
289 KB
Volume
55
Category
Article
ISSN
0013-4686

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✦ Synopsis

Li 2 FeSiO 4 /carbon/carbon nano-tubes (Li 2 FeSiO 4 /C/CNTs) and Li 2 FeSiO 4 /carbon (Li 2 FeSiO 4 /C) composites were synthesized by a traditional solid-state reaction method and characterized comparatively by X-ray diffraction, scanning electron microscopy, BET surface area measurement, galvanostatic charge-discharge and AC impedance spectroscopy, respectively. The results revealed that the Li 2 FeSiO 4 /C/CNT composite exhibited much better rate performance in comparison with the Li 2 FeSiO 4 /C composite. At 0.2 C, 5 C and 10 C, the former composite electrode delivered a discharge capacity of 142 mAh g -1 , 95 mAh g -1 , 80 mAh g -1 , respectively, and after 100 cycles at 1 C, the discharge capacity remained 95.1% of its initial value.

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