The present application belongs to the technical field of battery materials, and discloses an aluminum-doped needle-like cobaltosic oxide and a preparation method therefor. The preparation method comprises the following steps: mixing a waste battery powder and an amino acid, adjusting the pH until an alkaline state is reached, and subjecting same to solid-liquid separation to obtain an aluminum-removed battery powder and a first filtrate; adding an acid to the aluminum-removed battery powder, mixing same, and subjecting same to solid-liquid separation to obtain a cobalt-containing acid solution and a copper-containing slag; adding, in a dropwise manner, a templating agent to the cobalt-containing acid solution, then adding an alkali to adjust the pH, centrifuging same, and subjecting same to a heat treatment to obtain an aluminum-doped needle-like cobaltosic oxide.

The present disclosure relates to no fiber calcined gypsum and methods of making the same using a multi-stage (typically two-stage) calcination process. The first stage is a high temperature calcination and nucleation stage. The second stage is a lower temperature calcination and crystal growth stage which produces product slurry containing calcined gypsum particles having large, acicular calcined gypsum crystal morphology for use in making gypsum fiberboard.

A filling material for a resin composition includes a base material and a coating material coating at least a portion of a surface of a particle of the base material. The base material comprises a first inorganic compound containing a Group II element. The coating material comprises a second inorganic compound containing the Group II element and is different from the first inorganic compound. A method of manufacturing the filling material is provided. A resin composition comprising the filling material, a package, a light-emitting device, and methods of manufacturing them are also provided.

A dielectric composition is a barium titanate-based dielectric composition and includes a barium titanate particle including a major axis, a minor axis disposed on the same plane as the major axis, and a vertical axis perpendicular to both the major axis and the minor axis, and a ratio of a length of the major axis to a length of the vertical axis is within a range from 1.5:1 to 30:1.

Fibrous basic magnesium sulfate having excellent acid resistance. A fibrous powder comprising the fibrous basic magnesium sulfate, and an anionic surfactant (A) and a cationic surfactant (B), both coating the surface of the fibrous basic magnesium sulfate.

[Object] Provided is a means which is capable, with respect to a non-aqueous electrolyte secondary battery, of suppressing a decrease in capacity when the battery is used for a long period of time, and improving cycle characteristics. [Solving Means] Provided is a positive electrode active substance for a non-aqueous electrolyte secondary battery, the positive electrode active substance being a lithium-nickel-manganese-cobalt composite oxide and having true density of 4.40 to 4.80 g/cm.sup.3.

The present invention provides a process for production of a magnetic thin film which has insulation properties, serves as a permanent magnet, and has improved residual magnetization in comparison with prior arts, the magnetic thin film, and a magnetic material. When a magnetic thin film 3 is formed, an external magnetic field with a predetermined intensity is applied to a coating liquid containing magnetic particles containing epsilon-type iron-oxide-based compounds which have insulation properties and which serve as a permanent magnet, and the coating liquid is let cured in order to form the magnetic thin film 3. Accordingly, the magnetic particles containing the epsilon-type iron-oxide-based compounds can be fixed while being oriented regularly in a magnetization direction. This realizes the process for production of the magnetic thin film 3 which has insulation properties and which serve as a permanent magnet, the magnetic thin film 3, and a magnetic material 1.

Methods are provided for synthesis of substantially pure phase ZSM-48 crystals having a fiber or needle morphology based on synthesis mixtures containing non-sodium alkali metal ions, where the structure directing agent in the synthesis mixture can be a diquaternary alkylammonium salt with a 6-carbon atom chain between the ammonium ions (diquat-6). The methods described herein can be used to make ZSM-48 crystals having a fiber and/or needle crystal morphology from a synthesis mixture containing a diquat-6 structure directing agent. The desired morphology can be achieved in part by reducing, minimizing, and/or eliminating the presence of sodium ions in the synthesis mixture.

Monodisperse particles having: a single pure crystalline phase of a rare earth-containing lattice, a uniform three-dimensional size, and a uniform polyhedral morphology are disclosed. Due to their uniform size and shape, the monodisperse particles self assemble into superlattices. The particles may be luminescent particles such as down-converting phosphor particles and up-converting phosphors. The monodisperse particles of the invention have a rare earth-containing lattice which in one embodiment may be an yttrium-containing lattice or in another may be a lanthanide-containing lattice. The monodisperse particles may have different optical properties based on their composition, their size, and/or their morphology (or shape). Also disclosed is a combination of at least two types of monodisperse particles, where each type is a plurality of monodisperse particles having a single pure crystalline phase of a rare earth-containing lattice, a uniform three-dimensional size, and a uniform polyhedral morphology; and where the types of monodisperse particles differ from one another by composition, by size, or by morphology. In a preferred embodiment, the types of monodisperse particles have the same composition but different morphologies. Methods of making and methods of using the monodisperse particles are disclosed.

A production method for producing an oxygen sensor, includes spinning a precursor consisting of a salt of at least one metal chosen from Sc, Y, La, Ce, Pr, Nd, Sm, Gd, Dy, Ho, Yb, Sr, Ba, Mn, Co, Mg, and Ga, a solvent, and a macromolecular polymer to produce nanofibers of the precursor containing the salt of the metal. The method further includes calcining the nanofibers of the precursor at a temperature ranging from 550 C. to 650 C. for 2 to 4 hours, and making a solid electrolyte material composed of the nanofibers obtained from the calcining. The resulting solid electrolyte material constitutes a part of the oxygen sensor.