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Synthesis and electrochemical performance of Li2FeSiO4/carbon/carbon nano-tubes for lithium ion battery |
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| Authors: | Xiaobing Huang Xing Li Zhonglai Pan Zuolong Yu |
| Affiliation: | a Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China b Graduate University of the Chinese Academy of Sciences, Beijing 100049, China c Zhongke Laifang Energy and Technology Co. Ltd, China d The Institute of Optics and Electronics, Chinese Academy of Sciences, China e School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China |
| Abstract: | Li2FeSiO4/carbon/carbon nano-tubes (Li2FeSiO4/C/CNTs) and Li2FeSiO4/carbon (Li2FeSiO4/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 Li2FeSiO4/C/CNT composite exhibited much better rate performance in comparison with the Li2FeSiO4/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. |
| Keywords: | Lithium ion battery Solid-state reaction Li2FeSiO4/C/CNT composite Li2FeSiO4/C composite Conductive network |
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