Structural and chemical properties of the layered Li(Li0.21Mn0.54Ni0.125Co0.125-x)FexO2 as the candidate Material for Lithium Battery

The nanopowders of Li(Li0.21Mn0.54Ni0.125Co0.125-x)FexO2 (x=0% , 0.01% , 0.05%, 0.075 and 0.10% ) (Fe doped-LMNC) were prepared by sol-gel method. The thermal, structural and chemical properties of the samples were investigated by thermogravimetric analysis (TGA), differential thermal analysis (DTA), X-ray diffraction (XRD), Field Emission Scanning Electron Microscopy (FESEM), X-ray energy spectroscopy (EDS), and infrared spectroscopy (FTIR).The TG /DTA measurements showed weight loss in nanopowders of pure and doped samples. The XRD results reveled crystalline structures for pure and Fe powder nanoparticles.doped-LMNC, It was found that the layerd structure of the Fe doped-LNNC materials were not changed up to % 0.05 Fe but for the higher Fe doping concentration the additional peak, which are related to the formation of the secondary phase of LiMn2O4, have been observed in the structure.The FESEM images for pure and doped samples have shown to be agglomerated with relatively spherical particles size of smaller than 50 nm. Image tools software was used for illustrating the distribution of particle size of nanopowders.The connection bonds and used chemical elements in these nanopowders have been investigated by The Infrared spectroscopy (FTIR),