C01P2002/10

Hexagonal Boron Nitride Aggregated Particles, Hexagonal Boron Nitride Powder, Resin Composition, and Resin Sheet

Provided are hexagonal boron nitride aggregated particles and hexagonal boron nitride powder, each of which can be filled into a resin to produce a resin composition with an extremely high dielectric strength and thermal conductivity, and to reduce the density of the resin composition. Provided are hexagonal boron nitride aggregated particles, in which aggregated particles of hexagonal boron nitride primary particles have a longer diameter ranging from 5 to 10 ?m, a longer diameter/shorter diameter ranging from 1.0 to 1.3, and a circularity within a range from 0.3 to 0.8, and a maximum diameter of primary particles which can be confirmed on the surface of the aggregated particles on an SEM observation image at 10,000 magnification is 4 ?m or less. Provided is a hexagonal boron nitride powder including aggregated particles of hexagonal boron nitride primary particles, in which a particle size (D.sub.50) at a cumulative volume frequency of 50% in a particle size distribution as measured by a wet laser diffraction particle size distribution analysis is from 5 to 150 ?m, a volume-based median diameter of pores as measured by a mercury porosimetry is 3.0 ?m or less, and a content of impurity elements is 500 ppm or less.

NANOCRYSTALLINE COMPOSITE CATALYST FOR STORING/SUPPLYING HYDROGEN, NANOCRYSTALLINE COMPOSITE CATALYST MIXTURE FOR STORING/SUPPLYING HYDROGEN, AND METHOD FOR SUPPLYING HYDROGEN

The present disclosure provides that a catalyst exhibits excellent catalytic activity in both a hydrogenation involving a hydrogen-storing body containing an aromatic compound, and a dehydrogenation involving a hydrogen-supplying body containing a hydrogen derivative of the aromatic compound, wherein the catalyst contains a nanocrystalline composite having two or more accumulated flake-like nanocrystalline pieces in a connected state, the flake-like nanocrystalline pieces each having a main surface and an end surface, and in that the nanocrystalline composite is configured such that, when two adjacent nanocrystalline pieces are viewed, an end surface of at least one of the nanocrystalline pieces is connected.

Method and system for producing molybdenum disulfide inorganic nanotubes

Method is presented for crystalline molybdenum disulfide (MoS.sub.2) inorganic nanotubes (INTs) production. Initial synthesis of pure phase hexagonal molybdenum oxide (h-MoO.sub.3) nanowhiskers is performed forming precursor and templating agent for MoS.sub.2 INTs production. First-stage sulfurization of h-MoO.sub.3 is performed via a solid-gas reaction at first temperature conditions T.sub.1 producing MoO.sub.x-containing nanowhiskers (2x<3) followed by formation of initial growth stage of MoS.sub.2 INTs being nanostructures having cores with MoO.sub.x-containing nanowhiskers and initial MoS.sub.2 intermittent guiding layers being randomly oriented nanoplatelets or partially distorted layers at surface of MoO.sub.x-containing nanowhiskers. Second or successive second and third stages of sulfurization of said nanostructures is/are performed providing recrystallization of MoS.sub.2 intermittent guiding layers to obtain highly crystalline layers and complete sulfurization of MoO.sub.x inside the cores to MoS.sub.2, and obtain pure phase and high aspect ratio MoS.sub.2 INTs of needle-like crystal with hollow core morphology, and predetermined walls' structure.

Method of manufacturing active material particles
09831497 · 2017-11-28 · ·

A lithium-ion secondary battery (100A) includes a positive electrode current collector (221A) and a positive electrode active material layer (223A) retained on the positive electrode current collector (221A). The positive electrode active material layer (223A) contains positive electrode active material particles, a conductive agent, and a binder. The positive electrode active material particles (610A) each include a shell portion (612) made of primary particles (800) of a layered lithium-transition metal oxide, a hollow portion (614) formed inside the shell portion (612), and a through-hole (616) penetrating through the shell portion (612). The primary particles (800) of the lithium-transition metal oxide have a major axis length of less than or equal to 0.8 m in average of the positive electrode active material layer (223A).

Porous one-dimensional polymeric graphitic carbon nitride-based nanosystems for catalytic conversion of carbon monoxide and carbon dioxide under ambient conditions

In some aspects and embodiments, the present application provides a wide range of porous 1-D polymeric graphitic carbon-nitride materials that are atomically doped with binary metals in different morphologies. In some embodiments, the graphitic carbon-nitride materials can be prepared with high mass production from inexpensive and natural abundant precursors. In some embodiments, the materials were used successfully for the oxidation of CO to CO.sub.2 under ambient reaction temperature in addition to the reduction of CO.sub.2 into hydrocarbons. In some embodiments, the materials can be used for practical and large-scale gas conversion for household or industrial applications.

Lithium-ion secondary battery
20170110721 · 2017-04-20 · ·

A lithium-ion secondary battery (100A) includes a positive electrode current collector (221A) and a positive electrode active material layer (223A) retained on the positive electrode current collector (221A). The positive electrode active material layer (223A) contains positive electrode active material particles, a conductive agent, and a binder. The positive electrode active material particles (610A) each include a shell portion (612) made of primary particles (800) of a layered lithium-transition metal oxide, a hollow portion (614) formed inside the shell portion (612), and a through-hole (616) penetrating through the shell portion (612). The primary particles (800) of the lithium-transition metal oxide have a major axis length of less than or equal to 0.8 m in average of the positive electrode active material layer (223A).

Standalone precursor for synthesizing nanomaterials and apparatus for synthesizing nanomaterials using the same

A standalone precursor is for synthesizing nanomaterials such as boron nitride nanotubes. The standalone precursor includes a pillar. Pores and through-holes are defined in the pillar. Each of the through-holes extends continuously from a first opening on an outer surface of the standalone precursor to a second opening on the outer surface of the standalone precursor. The first opening is diametrically opposite to the second opening across the standalone precursor.

Lithium-ion secondary battery
09577254 · 2017-02-21 · ·

A lithium-ion secondary battery (100A) includes a positive electrode current collector (221A) and a positive electrode active material layer (223A) retained on the positive electrode current collector (221A). The positive electrode active material layer (223A) contains positive electrode active material particles, a conductive agent, and a binder. The positive electrode active material particles (610A) each include a shell portion (612) made of primary particles (800) of a layered lithium-transition metal oxide, a hollow portion (614) formed inside the shell portion (612), and a through-hole (616) penetrating through the shell portion (612). The primary particles (800) of the lithium-transition metal oxide have a major axis length of less than or equal to 0.8 m in average of the positive electrode active material layer (223A).

STANDALONE PRECURSOR FOR SYNTHESIZING NANOMATERIALS AND APPARATUS FOR SYNTHESIZING NANOMATERIALS USING THE SAME

A standalone precursor is for synthesizing nanomaterials such as boron nitride nanotubes. The standalone precursor includes a pillar. Pores and through-holes are defined in the pillar. Each of the through-holes extends continuously from a first opening on an outer surface of the standalone precursor to a second opening on the outer surface of the standalone precursor. The first opening is diametrically opposite to the second opening across the standalone precursor.

All-scale self-assembly and precise positioning of supraparticles

A method is disclosed of assembling building blocks into supraparticles. The method includes applying a first solvent on a template of patterned recessed regions to wet surfaces of the recessed regions; applying a second solvent on the template of patterned recessed regions, the building blocks suspended in the second solvent; wherein the first solvent and the second solvent are partially miscible, resulting in negligible interfacial surface tension between the first and second solvents; and wherein droplets of the second solvent diffuse droplets of the first solvent in the recessed regions, thereby assembling the building blocks into the supraparticles in the recessed regions.