• 文献标题:   Synthesis, characterization and electrochemical performances of LiFePO4/graphene cathode material for high power lithium-ion batteries
  • 文献类型:   Article
  • 作  者:   SHANG WL, KONG LY, JI XW
  • 作者关键词:   liquid phase method, lifepo4, graphene, lithiumion batterie
  • 出版物名称:   SOLID STATE SCIENCES
  • ISSN:   1293-2558 EI 1873-3085
  • 通讯作者地址:   Shenzhen Dynanon Co Ltd
  • 被引频次:   14
  • DOI:   10.1016/j.solidstatesciences.2014.10.002
  • 出版年:   2014

▎ 摘  要

LiFePO4/graphene (LiFePO4/G) cathode with exciting electrochemical performance was successfully synthesized by liquid phase method. LiFePO4 nanoparticles wrapped with multi-layered grapheme can be fabricated in a short time. This method did not need external heating source. Heat generated by chemical reaction conduct the process and removed the solvent simultaneously. The LiFePO4/G were analyzed by X-ray diffraction (XRD) analysis, scanning electron microscope (SEM), transmission electron microscopy (TEM), magnetic properties analysis and electrochemical performance tests. The LiFePO4/G delivered a capacity of 160 mAh g(-1) at 0.1C and could tolerate various dis-charge currents with a capacity retention rate of 99.8%, 99.2%, 99.0%, 98.6%, 97.3% and 95.0% after stepwise under 5C, 10C, 15C, 20C, 25C and 30C, respectively. (C) 2014 Elsevier Masson SAS. All rights reserved.