Characterization of Li1−x Ni1+x O2 prepared by the thermal-assisted precipitation process

Li_1−x Ni_1+x O₂ was prepared by the thermal-assisted precipitation process of LiOH · H₂O and Ni(CH₃COO)₂ · 4H₂O at a pH of 6–13 followed by the high temperature calcination for a variety of prolonged times. Phases, morphologies and constituents were characterized using an x-ray diffractometer (XRD), a scanning electron microscope (SEM), an energy dispersive x-ray (EDX) analyzer an atomic absorption spectrophotometer (AAS) and titration. Maximum I₍₀₀₃₎/I₍₁₀₄₎] and minimum I_(006+102)/I₍₁₀₁₎] intensity ratios were used to determine the preparation conditions. In addition, possible formation reactions of the precursors and calcined products were proposed. The article was submitted by the authors in English.