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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 233-235One-step Carbothermal Reduction Synthesis of...

One-step Carbothermal Reduction Synthesis of Li₃V₂(PO₄)₃ /C as Cathode Material for Lithium Ion Batteries

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Abstract:

Li₃V₂(PO₄)₃/C has been synthesized by a simple one-step carbothermal reduction technology using LiH₂PO₄, V₂O₅ as the raw materials and sucrose as carbon source. X-ray diffraction (XRD) and scanning electron microscope (SEM) measurements showed that Li₃V₂(PO₄)₃/C synthesized by one-step carbothermal reduction had monoclinic structure. The structure and particle-size of the as-prepared Li₃V₂(PO₄)₃/C can be adjusted by the amount of carbon content, sintering temperature and sintering time in the synthesis processes. Li₃V₂(PO₄)₃/C prepared with a carbon content 0.4, sintering temperature 800°C and sintering time 20 h showed the largest discharge capacity 121.4mAh.g⁻¹ and an capacity retention rate of 98.3% after 50 cycles at 0.5C. The Li₃V₂(PO₄)₃/C obtained also exhibits an excellent rate capability with high discharge capacities of 111.0 mAh.g⁻¹ at 2.0C and 102.1 mAh.g⁻¹ at 5.0C.

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Periodical:

Advanced Materials Research (Volumes 233-235)

Pages:

1123-1131

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.233-235.1123

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Online since:

May 2011

Authors:

Mei Lin Li, Li Li Meng, Fan Wang, Hai Feng Su, Yun Fei Long, Yan Xuan Wen, Ke Di Yang

Keywords:

Carbothermal Reduction Technology, Cathode Material, Lithium Vanadium Phosphate-Carbon Composite, Lithium-Ion Battery

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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