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• 作者：Zhongcai Shao ; Jili Xia ; Xinqing Liu ; Guangyu Li
• 关键词：LiFePO4/C ; xLiFePO4·yLi3V2(PO4)3 ; Carbon sources ; Coating ; Composite ratio ; Electrochemical performance
• 刊名：Research on Chemical Intermediates
• 出版年：2016
• 出版时间：May 2016
• 年：2016
• 卷：42
• 期：5
• 页码：4121-4133
• 全文大小：1,373 KB
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• 作者单位：Zhongcai Shao (1)
  Jili Xia (1)
  Xinqing Liu (1)
  Guangyu Li (1)
  
  1. School of Environmental and Chemical Engineering, Shenyang Ligong University, Shenyang, 110159, China
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Catalysis
  Physical Chemistry
  Inorganic Chemistry
  
• 出版者：Springer Netherlands
• ISSN：1568-5675

文摘

LiFePO₄/C and xLiFePO₄·yLi₃V₂(PO₄)₃ composites were successfully prepared by the high-temperature carbon thermal reduction method using LiOH·H₂O, Fe₂O₃, NH₄H₂PO₄, five different compounds (citric acid, polyaniline, carboxymethyl cellulose, E-44 epoxy resin, and tartaric acid), and V₂O₅ as raw materials. X-ray diffraction (XRD) analysis, scanning electron microscopy (SEM), laser particle size analysis, specific surface area measurements, and electrochemical performance testing were used to study their structure, morphology, and electrochemical properties. The results showed that the LiFePO₄/C materials exhibited significantly different polymerization degree, XRD spectra, specific surface area, and particle size distribution. Finally, 9LiFePO₄·Li₃V₂(PO₄)₃ and LiFePO₄/C coated using tartaric acid were shown to exhibit improved electrochemical performance.