The invention relates to improved particulate lithium nickel oxide materials which are useful as cathode materials in lithium secondary batteries, and methods of treating them.

A positive electrode active material for an all-solid-state lithium-ion battery composed of particles containing crystals of a lithium metal composite oxide, wherein the lithium metal composite oxide has a layered structure and contains at least Li and a transition metal, and the positive electrode active material for an all-solid-state lithium-ion battery satisfies all Formulae (1) to (3).

The present invention refers to a surface treated filler material product comprising a) at least one calcium carbonate-containing filler material and b) a treatment layer on the surface of the at least one calcium carbonate-containing filler material comprising i. maleic anhydride grafted polyethylene and/or maleic anhydride grafted polypropylene and ii. at least one hydrophobizing agent. Furthermore, a process for preparing the inventive surface treated filler material product is disclosed, as well as a polymer composition comprising at least one polymeric resin and the inventive surface treated filler material product. Additionally, a fiber and/or filament and/or film and/or thread and/or sheet and/or pipe and/or profile and/or mold and/or, injection molded compound and/or blow molded compound comprising the inventive surface treated filler material product is disclosed as well as the use of the inventive surface treated mineral filler product in a polymer composition, for improving the mechanical and/or rheological properties of the polymer composition.

This positive electrode active material for nonaqueous electrolyte secondary batteries contains: a lithium transition metal composite oxide having secondary particles, each of which is formed of aggregated primary particles; and a surface modification compound which is present on at least the surfaces of the secondary particles, while containing at least one of Ca and Sr. The lithium transition metal composite oxide contains 70% by mole or more of Ni relative to the total number of moles of the metal elements excluding Li; and the total amount of Ca and Sr in the surface modification compound is 0.5% by mole or less relative to the total number of moles of the metal elements excluding Li in the lithium transition metal composite oxide.

The present invention pertains to: a positive electrode active material precursor containing first secondary particle composed of an aggregate of a plurality of first primary particles, the positive electrode active material precursor including a first center portion represented by chemical formula 1 and a first surface portion represented by chemical formula 2, wherein the thickness of the first surface portion is 2-20% of the average radius of the positive electrode active material precursor; and a positive electrode active material containing the positive electrode active material precursor.

A thermoelectric material of the present invention includes copper, tin, and sulfur, wherein a ratio A/B of the number A of copper atoms to the number B of tin atoms is 0.5 to 2.5 and a content of a metal element other than copper and tin is 5 mol % or less with respect to total metal elements. Additionally, the thermoelectric material of the present invention has a thermal conductivity less than 1.0 W/(m.Math.K) at 200 to 400° C.

The present disclosure is a photoelectric conversion element including: a photoelectric conversion layer 5 including a first quantum dot 4a and a second quantum dot 4b, a ratio X of the number of heavy metal atoms to the number of oxygen group atoms is less than 2 on a surface of the nanoparticle of the first quantum dot 4a, the ratio X is greater than or equal to 2 on a surface of the nanoparticle of the second quantum dot 4b, and Equation (1) is satisfied:
0.3<N  (1),
where N denotes a ratio of the number of second quantum dots to the number of first quantum dots.

A ceramic powder material containing a garnet-type compound containing Li, wherein the ceramic powder material has a pore volume of 0.4 mL/g or more and 1.0 mL/g or less.

The present invention relates to lithium rechargeable battery cathode materials. More specifically, the cathode materials are compositionally gradient nickel-rich cathode materials produced using single-source composite precursor materials containing inorganic and/or metalorganic salts of lithium, nickel, manganese, and cobalt. Methods and systems for manufacturing the cathode materials by a combined spray pyrolysis/fluidized bed process are also disclosed.

A composite nanomaterial of ZnO impregnated by, e.g., a green copper phthalocyanine compound (CuPc) can be an efficient solar light photocatalyst for water remediation. The composite may include hollow shell microspheres and hollow nanospheres of CuPc-ZnO. CuPc may function as a templating and/or structure modifying agent, e.g., for forming hollow microspheres and/or nanospheres of ZnO particles. The composite can photocatalyze the degradation of organic pollutants such as crystal violet (CV) and 2,4-dichlorophenoxyacetic acid as well as microbes in water under solar light irradiation. The ZnO—CuPc composite can be stable and recyclable under solar irradiation.