HAN Shao-chang,ZHANG Ke-he, FAN Chang-ling, LI Ling-fang,CHEN Jin, ZHANG Xiang
(College of Materials Science and Engineering, Hunan Univ, Changsha, Hunan 410082, China) 在知网中查找 在百度中查找 在本站中查找
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Abstract:
Epoxy resin was used as the reductant and solid-state reaction was applied to synthesize Li3V2(PO4)3 cathode for lithium batteries. The crystal structure and morphology of the sample were characterized through X-ray diffraction analysis and with scanning electron microscopy. Galvanostatic charge-discharge and cyclic voltammetry were utilized to determine the electrochemical properties of the sample. The results have shown that the synthesized Li3V2(PO4)3 possess a well-developed monoclinic crystallite structure. Its particles distribute uniformly and the size is small. The initial discharge capacity is 126.9 mAh/g at the 0.2 C rate in the voltage range of 3.0~ 4.3 V. The discharge capacity is 126.0 mAh/g and the capacity retention rate is 99.29% after 30 cycles.