Effects of Carbon Source on Performance of Li3V2(PO4)(3)/C Cathode Materials Synthesized via Carbon Thermal Reduction for Li-ion Batteries

作者：Chen Zhenyu^*; Jin Haizu; Dai Changsong; Wu Gang; Nelson Mark; Cheng Yuanfang

来源：International Journal of Electrochemical Science, 2013, 8(6): 8153-8166.

• Lithium ion batteries
• lithium vanadium phosphate
• carbothermal reduction method
• carbon nanotubes
• sucrose

Effects of the source of carbon on properties and performance of Li3V2(PO4)(3)/C composite cathode materials were studied using five different carbon containing materials (sucrose, graphite, carbon nanotubes, citric acid, and carbon black) in synthesis via the carbothermal reduction method. It was found that the electrochemical performance of the cathode material was greatly dependent on particle size, carbon content, and electron conductivity, which were all functions of the carbon source. When the ratio of carbon to vanadium was tentatively fixed at 1.25, Li3V2(PO4)(3)/C synthesized with carbon nanotubes showed the best electrochemical performance due to a high carbon content and uniformly distributed small particle size. In the further optimization of the ratio of carbon to vanadium in sucrose-synthesized cathode materials, sucrose was verified as more suitable carbon source and able to achieve to higher cathode performance.

• 单位
  harbin inst technol