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    • Keywords


      Lithium ion battery; lithium manganese oxide; coating; solid-state method.

    • Abstract


      Cathode material, LiMn2O4, was synthesized by solid-state reaction followed by surface coating of Li3BO3 solid electrolyte. Structure and electrochemical performance of the prepared powders were characterized by X-ray diffraction, scanning electron microscopy, cyclic voltammetry, electrochemical impedance spectroscopy and galvanostatic charge–discharge techniques, respectively. Results show that Li3BO3 coated LiMn2O4 has similar X-ray diffraction patterns as LiMn2O4. The discharge specific capacities of LiMn2O4 coated with 0.1, 0.3 and 0.6 wt% Li3BO3 are 123.3, 118.2 and 110 mAh/g, respectively, which is slightly smaller than that of 124.4 mAh/g for LiMn2O4. However, the capacity retention of Li3BO3 coated LiMn2O4 is at least 5.6 and 7.6% higher than LiMn2O4 when cycled at room temperature and 55 °C, respectively. Li3BO3 coated LiMn2O4 shows much better cycling behaviours than LiMn2O4.

    • Author Affiliations


      Liu Jinlian1 Wu Xianming1 2 Chen Shang1 2 Liu Jianben1 2 He Zeqiang1 2

      1. College of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, China
      2. Xiangxi Ores and New Materials Development and Service Centre, Jishou 416000, China
    • Dates

  • Bulletin of Materials Science | News

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      Posted on July 25, 2019

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