A positive electrode for a rechargeable battery, comprising a lithium metal oxide powder having a layered crystal structure and having the formula Li.sub.xTm.sub.yHm.sub.zO.sub.6, with 3x4.8, 0.60y2.0, 0.60z2.0, and x+y+z=6, wherein Tm is one or more transition metals of the group consisting of Mn, Fe, Co, Ni, and Cr; wherein Hm is one or more metals of the group consisting of Zr, Nb, Mo and W. The lithium metal oxide powder may comprise dopants and have the formula Li.sub.xTm.sub.yHm.sub.zM.sub.mO.sub.6 A, wherein A is either one or more elements of the group consisting of F, S or N; and M is either one or more metal of the group consisting of Ca, Sr, Y, La, Ce and Zr, with either >0 or m>0, 0.05, m0.05 and x+y+z+m=6.

In general, according to one embodiment, there is provided an active material. The active material contains a composite oxide having an orthorhombic crystal structure. The composite oxide is represented by a general formula of Li.sub.2+wNa.sub.2xM1.sub.yTi.sub.6zM2.sub.zO.sub.14+. In the general formula, the M1 is at least one selected from the group consisting of Cs and K; the M2 is at least one selected from the group consisting of Zr, Sn, V, Nb, Ta, Mo, W, Fe, Co, Mn, and Al; and w is within a range of 0w4, x is within a range of 0<x<2, y is within a range of 0y<2, z is within a range of 0<z6, and is within a range of 0.50.5.

The invention relates to Chevrel-phase materials and methods of preparing these materials utilizing a precursor approach. The Chevrel-phase materials are useful in assembling electrodes, e.g., cathodes, for use in electrochemical cells, such as rechargeable batteries. The Chevrel-phase materials have a general formula of Mo.sub.6Z.sub.8 and the precursors have a general formula of M.sub.xMo.sub.6Z.sub.8. The cathode containing the Chevrel-phase material in accordance with the invention can be combined with a magnesium-containing anode and an electrolyte.

An object of the present invention is to provide a composite oxide particle material formed of zinc molybdate having a high purity and a high circularity. The composite oxide particle material is formed of a composite oxide, of molybdenum and zinc, having an average particle diameter of 0.1 m or more and 5.0 m or less, a BET specific surface area of 1 m.sup.2/g or more and 20 m.sup.2/g or less, (peak intensity at 26.6 according to XRD)/(peak intensity at 24.2) of 1.20 or more, an impurity concentration of 1 mass % or less, and a circularity of 0.90 or more. XRD is measured with CuK radiation.

Provided is a novel polyoxometalate and a method for producing the polyoxometalate. The polyoxometalate is represented by the compositional formula: M.sub.xO.sub.y in which M is tungsten, molybdenum or vanadium; 4x1000; and 2.5y/x7.

A Co.sub.2Z hexaferrite composition is provided containing molybdenum and one or both of barium and strontium, having the formula (Ba.sub.2Sr.sub.(3-Z)Co.sub.(2+X))Mo.sub.xFe.sub.(y-2x)O.sub.41 where x=0.01 to 0.20; y=20 to 24; and z=0 to 3. The composition can exhibit high permeabilities and equal or substantially equal values of permeability and permittivity while retaining low magnetic and dielectric loss tangents and loss factors. The composition is suitable for high frequency applications such as ultrahigh frequency and microwave antennas and other devices.

The present invention relates to a strontium magnesium molybdenum oxide material having perovskite structure and the method for preparing the same. Citric acid is adopted as the chelating agent. By using sol-gel pyrolysis and replacing a portion of strontium in Sr.sub.2MgMoO.sub.6- by cerium and a portion of magnesium by copper, a material with a chemical formula of Sr.sub.2-xCe.sub.xMg.sub.1-yCu.sub.yMoO.sub.6- is produced, where 0x<2, 0<y<1, and 0<<6. Thereby, the electrical conductivity of the material is improved. The perovskite-type cerium- and copper-replaced strontium magnesium molybdenum oxide significantly increases the electrical conductivity of the material and can be applied as the anode material for solid oxide fuel cell (SOFC).

This document relates to oxidative dehydrogenation catalyst materials that include molybdenum, vanadium, beryllium, oxygen, and optionally aluminum.

A method for configuring a non-lithium-intercalation electrode includes intercalating an insertion species between multiple layers of a stacked or layered electrode material. The method forms an electrode architecture with increased interlayer spacing for non-lithium metal ion migration. A laminate electrode material is constructed such that pillaring agents are intercalated between multiple layers of the stacked electrode material and installed in a battery.

This document relates to oxidative dehydrogenation catalyst materials that include molybdenum, vanadium, beryllium, oxygen, and optionally aluminum.