Phase transition and electrical properties of Ni1−x Zn x Mn2O4 (0 ≤ x ≤ 1.0) NTC ceramics

Non-stoichiometric carbon-coated LiFexPO4as cathode materials for high-performance Li-ion batteries

“…For example, Chen et al prepared Li 1.08 FePO 4 by the microwave-assisted hydrothermal method, of which the excess content of Li could inhibit the anti-site defects so as to achieve discharge capacity of 95 mA h g À1 at high rate of 10C. 27 Park et al synthesized the lithium-excess Li 1.05 Fe 0.95 PO 4 by the solid-state reaction, exhibiting 50C rate capability of 78 mA h g À1 caused by the elimination of Fe Li defects. 28 On the other hand, there appeared the literature indicating that the non-stoichiometric lithium iron phosphate consisted of certain impurities that played a signicant role in the electrochemical performance.…”

Equilibrium and kinetic studies of anionic surfactant removal by adsorption and photocatalytic degradation using hydrotalcite-like compounds and their calcined products

“…A strong broad absorbance band appears at around 3365 cm -1 , which is attributed to the hydroxyl group stretching vibration in the brucite-like layers and the interlayer water molecules. 14,15 The band observed at about 1354 cm -1 is assigned to the asymmetric stretching mode of the carbonate anions. 16,17 Finally, the bands ranging from 400 to 800 cm -1 can be attributed to the characteristic stretching bands of M-O and O-M-O vibration.…”

Electrical properties of Y/Mg modified NiO simple oxides for negative temperature coefficient thermistors

“…The preparation methods, sintering atmosphere and sintering process affect obviously the valence states and distribution of cations, and therefore have a strong effect on the electrical properties. In order to improve the electrical properties of the spinel manganates thermistors, element doping was carried out …”