Structural, magnetic and electrochemical properties of LiNi0.5Mn0.5O2 as positive electrode for Li-ion batteries

Magnetic properties of LixNiyMnyCo1−2yO2 (0.2≤1−2y≤0.5, 0≤x≤1)

“…Lattice parameters of powders fired at 950 • C in air are listed in Table 2. We have shown elsewhere how the Rietveld analysis of the XRD spectra can be used to determine the site-exchange ratio of Li + and Ni 2+ ions [20,21]. The same analysis in the present work shows that this ratio decreases from 6.7% to 0.7% upon increasing the Co concentration.…”

Structure and electrochemical behaviors of spherical Li1+xNi0.5Mn0.5O2+δ synthesized by rheological phase reaction method

“…Due to its small amount of active nickel and a unique role of Mn 4+ in stabilizing the structure during cycling, LiNi 0. 5 Mn 0.5 O 2 has a lot of advantages [15,16] such as its high theoretical capacity (280 mAh g À1 ), better stability at high voltages (>4.3 V), improved thermal safety characteristics compared with LiCoO 2 , low cost and more so eliminating toxic cobalt. LiNi 0.…”

Synthesis and Structural Characterization of Lithiated and Delithiated LiCoO2 Using Different Chelating Agents

“…The resulting products were sintered at 800°C in air for 12 hr. The sol-gel and combustion synthesis occurred from metal acetates via inorganic polymerization reactions in solution according to methods reported in our previous work (26) . Compared with the conventional solid state reaction, it is believed that these techniques offer many advantages, such as a lower temperature processing and a better control of material morphology.…”