Flake-like LiCoO₂ nanopowders were fabricated using electrospinning. To investigate their formation mechanism, field-emssion scanning electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy were carried out. Among various parameters of electrospinning, we controlled the molar concentration of the precursor and the PVP polymer. When the molar concentration of lithium and cobalt was 0.45 M, the morphology of LiCoO₂ nanopowders was irregular and round. For 1.27 M molar concentration, the LiCoO₂ nanopowders formed with flake-like morphology. For the PVP polymer, the molar concentration was set to 0.011 mM, 0.026 mM, and 0.043 mM. Irregular LiCoO₂ nanopowders were formed at low concentration (0.011 mM), while flake-like LiCoO₂ were formed at high concentration (0.026 mM and 0.043 mM). Thus, optimized molar concentration of the precursor and the PVP polymer may be related to the successful formation of flake-like LiCoO₂ nanopowders. As a results, the synthesized LiCoO₂ nanopowder can be used as the electrode material of Li-ion batteries.

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