A thermal oxidation-reduction cycle is disclosed that uses iron titanium oxide as the reactive material. The cycle may be used for the thermal splitting of water and/or carbon dioxide to form hydrogen and/or carbon monoxide. The formed compounds may be used as syngas precursors to form fuels.

A method for preparing molybdenum-based self-doped lithium-ion battery negative electrode material from molybdenum-containing waste catalyst includes: (1) calcinating and mechanically activating a waste hydrogenation catalyst containing molybdenum trioxide and aluminum oxide to obtain an oil-free and carbon-free micron-sized waste catalyst powder; (2) mixing the waste catalyst powder with sodium carbonate to obtain a mixture, and subjecting the mixture to thermal treatment to selectively convert molybdenum trioxide in the waste catalyst into sodium molybdate to obtain a clinker; (3) subjecting the clinker to leaching with water being used as a leaching agent, and collecting a leaching solution; and (4) mixing the leaching solution with a solution of a polyol containing a ferrous salt, subjecting the resulting mixture to a hydrothermal reaction, and collecting produced self-Al-doped ferrous molybdate to obtain the molybdenum-based self-doped lithium-ion battery negative electrode material.

A composition having the general formula: Na.sub.aMn.sub.bFe.sub.cTi.sub.dM.sub.eO.sub.2, wherein: M comprises one or more elements selected from the group consisting of aluminium, magnesium, zinc, copper, silicon, and zirconium; and wherein: 0.5<a1; 0.1b0.7; 0.1c0.7; 0<d0.3; and 0<e0.5, and wherein the composition is a layered sodium metal oxide material having at least a first phase and a second phase, wherein each phase is different and independently comprises one or more P2-type structures, one or more O3-type structures or one or more P3-type structures. Also described are methods of synthesizing layered sodium metal oxide materials as well as electrodes and energy storage devices including such compositions.

A ferrite composition is provided containing Ba, Co, and Ir and having a Z-type hexaferrite phase and a Y-type hexaferrite phase. The ferrite composition has the formula Ba.sub.3Co.sub.(2-x)Ir.sub.xFe.sub.(24-2x)O.sub.41 where x=0.05-0.20. The composition has equal or substantially equal values of permeability and permittivity while retaining low magnetic and dielectric loss factors. The composition is suitable for ultrahigh frequency applications such as high frequency and microwave antennas.

A lithium-free mixed titanium and niobium oxide, including at least one trivalent metal M, and having a molar ratio Nb/Ti greater than 2, said oxide being selected from the group including the material of formula (I) and the material of formula (II):
M.sub.xTi.sub.12xNb.sub.2+xO.sub.7(I) where 0<x0.20; 0.30.3;
M.sub.xTi.sub.22xNb.sub.10+xO.sub.29(II) where 0<x0.40; 0.30.3.

According to one embodiment, an active material is provided. The active material includes orthorhombic system oxide represented by the following formula: Li.sub.xM1M2.sub.2O.sub.6. In this formula, 0x5, M1 is at least one selected from the group consisting of Fe and Mn, and M2 is at least one selected from the group consisting of Nb, Ta and V.

The present invention relates to ferrite particles for bonded magnets having a bulk density of not more than 0.75 g/cm.sup.3 and a degree of compaction of not less than 65%, a resin composition for bonded magnets using the ferrite particles and the composition, and a rotor. The ferrite particles for bonded magnets and the resin composition for bonded magnets according to the present invention are capable of providing a bonded magnet molded product having a good tensile elongation and an excellent magnetic properties.

Magnetic nanoparticles and synthesis of synthesis are described.

Devices and methods for below-resonance radio-frequency applications. In some embodiments, a ferrite device can include a modified yttrium iron garnet material in which bismuth occupies at least some of dodecahedral sites, and aluminum occupies at least some of tetrahedral sites.

An epsilon-type iron oxide having an Fe-site that is substituted with a platinum group element, provided that Fe of a D-site of the epsilon-type iron oxide is not substituted with the platinum group element.