Hydrothermal synthesis of plate-like carbon-coated Li3V2(PO4)3 and its low temperature performance for high power lithium ion batteries

• DOI: 10.1016/j.electacta.2012.12.090
• Publication Date: 2012-12-29T17:04:05Z
• Authors: Fei Teng; Zhi-Hao Hu; Xiao-Hang Ma; Lin-Chao Zhang; Chu-Xiong Ding; Yan Yu; Chun-Hua Chen
• Keywords: 02 engineering and technology; 0210 nano-technology; 7. Clean energy

Abstract A plate-like carbon-coated Li 3 V 2 (PO 4 ) 3 (LVP/C) powder composed of nanoplates was synthesized by a hydrothermal route. The structure and electrochemical properties of the LVP/C are characterized by X-ray diffraction, scanning and transmission electron microscopy, and galvanostatic charge–discharge cycling. This LVP/C electrode exhibits good rate performance at room temperature with a specific capacity of 113.8 and 128.8 mAh g −1 at 6 C rate in the voltage range of 3.0–4.3 V and 3.0–4.8 V, respectively. The sample also shows good cycling performance with 91.4% and 85% of capacity retention after 200 cycles at 1 C rate. Even at −20 °C, the plate-like LVP/C delivers a stable cycling performance with a specific capacity of 120.7 mAh g −1 , being 95.3% of the capacity at room temperature, and after 80 cycles, the capacity retention is 97.2%.