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.

The present invention provides a resin sheet containing a chlorinated polyvinyl chloride and a dimethyltin-based compound, in which the chlorine content of the chlorinated polyvinyl chloride is 60% by mass or more, and the deflection temperature under load of the resin sheet measured in accordance with a JIS K 7191-1 A method is 80 C. or higher.

An object is to provide an metal complex oxide having excellent thermal conductivity and dielectric properties, a resin composition containing the metal complex oxide and capable of expressing excellent thermal conductivity and dielectric properties, and a molded product thereof. Specifically, a gahnite particle that includes zinc atoms, aluminum atoms, and oxygen atoms, and molybdenum atoms and has a dielectric loss tangent of 1.010.sup.3 or less at 1 GHz is used.

The present invention relates to the technical field of lithium-ion batteries, and particularly provides a positive electrode sheet and a preparation method therefor, and a lithium-ion battery comprising the positive electrode sheet. The positive electrode sheet comprises a positive electrode active material layer, and the positive electrode active material layer comprises a positive electrode material, a negative thermal expansion material, a conductive agent, and a binder, wherein the characteristic value J of the positive electrode sheet satisfies: 0.001J0.005. wherein J=R(F)/, R(F) represents the peak intensity ratio between the main peak (F) of the negative thermal expansion material and the (003) characteristic peak of the positive electrode material in the XRD pattern of the positive electrode sheet, and p represents the surface density of the positive electrode sheet, with a unit of mg/cm.sup.2.

Embodiments of a flame retardant compound are provided. The flame retardant compound includes a polymer base resin and a flame retardant additive distributed within the polymer base resin. The flame retardant additive includes inclusion complexes that are made of at least one guest molecule and at least one carbonific host molecule. The at least one guest molecules is a polyoxometalate ionic liquid. The flame retardant compound achieves a limiting oxygen index of at least 25% according to ISO 4589. Additionally, embodiments of a flame retardant cable are provided that utilize the flame retardant compound as a jacketing material.