Synthesis and electrical properties of Li[Ni1/3Mn1/3Co1/3]O2

Abstract

Among cathode materials for Li-ion batteries, layered Li[Ni,Co,Mn]O2 with hexagonal structure have drawn significant attention recently due to their excellent energy density. In the present study, Li[Ni1/3Mn1/3Co1/3]O2 was prepared using a sol-gel assisted combustion method. Rietveld refinement of room temperature X-ray diffraction data confirmed the crystallization of single-phase hexagonal Li[Ni1/3Mn1/3Co1/3]O2 in space group R3m with calculated lattice parameters a = 2.8615(8) Å and c = 14.229(1) Å. Impedance spectroscopy was used to study the electrical properties of LMN ceramics. DC conductivity was found to be 5.1×10-3 Ω-1m-1 at room temperature and obeyed the Arrhenius relation with activation energy EA = 0.27±0.01 eV. © 2017 Author(s).