Electrical power generator comprises a case (1) with a package of conductive plates of both signs including at least one unit cell, which consists of one layer of a ferroelectric material (3) and two dissimilar conductive plates which are placed in the following order: a conductive plate (2)a ferroelectric material (3)a conductive plate different from the first one (2). All the layers in the package are tightly fit to each other and the conductive plates (2) are made of dissimilar conductors with different concentration of free electrons. Ferroelectric semiconductors that are used as the ferroelectric material can be chosen from the list of sodium nitrite, semiconductor ceramics based on barium titanite, lithium niobate, potassium niobate, lead titanite, etc.

Disclosed are a barium titanate foam ceramic/thermosetting resin composite material and a preparation method therefor. An organic additive is used as an auxiliary; deionized water is used as a solvent; nanometer barium titanate is used as a ceramic raw material; and all of same are mixed and ground so as to form a slurry with a certain solid content. A pre-treated polymer sponge is impregnated into the slurry for slurry coating treatment, and then redundant slurry is removed and the polymer sponge is dried so as to obtain a barium titanate foam ceramic blank, and same is then sintered so as to obtain a barium titanate foam ceramic. A resin, being in a molten state and thermosettable, submerges the pores of the barium titanate foam ceramic, and a barium titanate foam ceramic/thermosetting resin composite material is obtained after a thermosetting treatment.

The invention relates to a method for preparing a sol-gel solution which can be used to prepare a barium titanate ceramic doped with hafnium and/or with at least one lanthanide element, comprising the following steps: a) a step to place a first mixture comprising a barium carboxylate and a diol solvent in contact with a second mixture comprising a titanium alkoxide and a hafnium alkoxide and/or an alkoxide of a lanthanide element in a monoalcohol solvent; b) a step to distil the mixture resulting from step a) to remove at least part of the monoalcohol solvent; c) a step to add acetic acid, under heat, to the distilled mixture of step b).

A toner for developing electrostatic images, including toner particles containing an external additive on surfaces of toner matrix particles. The external additive contains at least a lanthanum-containing titanate compound.

The pigment is composed of particles having a lattice constant a of 5.4700-5.5100 ? and containing a calcium-titanium composite oxide as a main component. The pigment selectively transmit light in a warm-color range, and can be used as an alternative material for titanium oxide. This pigment can be used for a cosmetic, for example.

The present application discloses a manufacturing method of an optical film and the optical film. The manufacturing method includes: step S10, mixing titanium source precursors and a barium source and adding an alkaline agent for a reaction to obtain nanoparticles; and step S20, mixing quantum dots, an organic adhesive, and the nanoparticles followed by coating to obtain the optical film.

The present invention relates to an active material for a lithium secondary battery, which includes a secondary particle formed by agglomeration of primary particles which include a lithium titanium composite oxide represented by Formula 1 or Formula 2, wherein a pore volume is in a range of 0.001 cm.sup.3/g to 0.05 cm.sup.3/g, and a method of preparing the same, wherein the active material for a lithium secondary battery according to the present invention may maintain an adequate pore volume even during rolling, because strength of the secondary particle is improved by controlling a particle diameter of the primary particle by introducing a metallic element.

Provided is a black fine particulate near-infrared reflective material which is a perovskite-type complex oxide containing at least an alkaline earth metal element, titanium element, and manganese element, having a BET specific surface area within a range of 3.0-150 m.sup.2/g. The Hunter L value, as an indicator of blackness, is 30 or less, and the reflectivity at a wavelength of 1200 nm, as an indicator of near-infrared reflective power, is 40% or above.

A passive temperature-sensing apparatus, which includes a capacitive sensing element that includes a capacitive sensing composition that includes a ferroelectric ceramic material that exhibits a measurable electrical Curie temperature that is below 30 degrees C. The capacitive sensing composition exhibits a negative slope of capacitance versus temperature over the temperature range of from 30 degrees C. to 150 degrees C.

A multilayered structure including a substrate and a layer of calcium-doped bronze is disclosed. A multilayered structure including a substrate, a layer of calcium-doped bronze, and a layer of pure bronze is also disclosed. A method for fabricating a multilayer structure including a substrate and a layer of calcium-doped bronze is also disclosed.