• Fulltext


        Click here to view fulltext PDF

      Permanent link:

    • Keywords


      Polyanion cathodes; LiFePO$_4$; Li$_2$FeP$_2$O$_7$; Li$_2$FeSiO$_4$; methylcellulose; quenching.

    • Abstract


      The polyanion cathodes for Li-ion batteries, namely LiFePO$_4$, Li$_2$FeP$_2$O$_7$ and Li$_2$FeSiO$_4$, were synthesized by very short high-temperature treatment (approximately several minutes) and subsequent quenching. Methylcellulose—a polymer with thermally driven water solubility—was used as the medium in which the precursor solutions were dispersed prior to high temperature treatment. The methylcellulose pyrolytically decomposes to carbon, thus producing the polyanion material/carbon composites of LiFePO$_4$/C, Li$_2$FeP$_2$O$_7$/C and Li$_2$FeSiO$_4$/C. The obtained powders have reduced crystallinity and significant microstructural characteristics: low crystallite size and notable microstrain. They exhibit stable electrochemical performances in both aqueous and organic electrolyte. The broadening of existing peaks in cyclic voltammetry and/or the emergence of new broad peaks was attributed to the presence of the amorphous phase in the samples. In galvanostatic charge–discharge tests, the materials provided high capacities at low current densities, while the highest rate performance was demonstrated by olivine-phosphate when compared to the other two materials.

    • Graphical Abstract


    • Author Affiliations



      1. Institute of Technical Sciences of SASA, Belgrade 11000, Serbia
      2. Faculty of Physical Chemistry, University of Belgrade, Belgrade 11000, Serbia
      3. Vinča Institute of Nuclear Sciences—National Institute of the Republic of Serbia, University of Belgrade, Belgrade 11000, Serbia
    • Dates

    • Supplementary Material

  • Bulletin of Materials Science | News

    • Dr Shanti Swarup Bhatnagar for Science and Technology

      Posted on October 12, 2020

      Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
      Chemical Sciences 2020

      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
      Physical Sciences 2020

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2021-2022 Indian Academy of Sciences, Bengaluru.