• Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/036/04/0687-0691

    • 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

       

© 2017-2019 Indian Academy of Sciences, Bengaluru.