Abstract: Powder comprising particles comprising a matrix material and silicon-based domains dispersed in this matrix material, whereby the matrix material is carbon or a material that can be thermally decomposed to carbon, whereby either part of the silicon-based domains are present in the form of agglomerates of silicon-based domains whereby at least 98% of these agglomerates have a maximum size of 3 ?m or less, or the silicon-based domains are not at all agglomerated into agglomerates.

Abstract: Powder comprising particles comprising a matrix material and silicon-based domains dispersed in this matrix material, whereby the matrix material is carbon or a material that can be thermally decomposed to carbon, whereby either part of the silicon-based domains are present in the form of agglomerates of silicon-based domains whereby at least 98% of these agglomerates have a maximum size of 3 ?m or less, or the silicon-based domains are not at all agglomerated into agglomerates.

Abstract: A negative electrode material for a lithium ion battery, including silicon-containing particles, artificial graphite particles and a carbonaceous material, wherein at least part of the silicon-containing particles, the artificial graphite particles and the carbonaceous material form composite particles; wherein the silicon-containing particles are silicon particles having a SiOx (0<x?2) layer on the particle surface, having an oxygen content of 1.0 mass % or more and 18.0 mass % or less, and mainly containing particles having a primary particle diameter of 200 nm or less; wherein the artificial graphite particles are non-flaky artificial graphite particles and have a 50% particle diameter in a volume-based cumulative particle size distribution, D50, of 1.0 ?m or more and 15.0 ?m or less. Also disclosed is a lithium-ion battery including a negative electrode using the negative electrode material.

Abstract: A production method for a composite of fine particles (A) and carbon particles (B), including the steps of: mixing fine particles (A) formed of a substance comprising at least one kind of Si, Sn, Al, Ge and In; and molten pitch, to obtain a mixture (1); pulverizing the mixture (1) to obtain a pulverized product (2a); dry-mixing the pulverized product (2a) and carbon particles (B) to obtain a mixture (3a); and firing the mixture (3a), followed by pulverization; or including the steps of: adding carbon particles (B) to the mixture (1), followed by dry mixing and pulverizing, to obtain a pulverized product (2b); and firing the pulverized product (2b), followed by pulverization.

Abstract: Composite powder for use in an anode of a lithium ion battery, whereby the particles of the composite powder comprise silicon-based domains in a matrix, whereby the individual silicon-based domains are either free silicon-based domains that are not or not completely embedded in the matrix or are fully embedded silicon-based domains that are completely surrounded by the matrix, whereby the percentage of free silicon-based domains is lower than or equal to 4 weight % of the total amount of Si in metallic or oxidized state in the composite powder.

Abstract: A granular composite material, containing: particles (A) each formed of a substance which contains an element capable of intercalating and deintercalating lithium ions and is free of graphite; particles (B) each formed of a substance which contains graphite; carbon fibers (C); a polymer (D) containing a polysaccharide having an unsubstituted or substituted glucopyranose ring or a derivative thereof; and a solid electrolyte (E) containing a linear or branched polyether or a derivative thereof; a negative electrode obtained by laminating an electrode layer containing the granular composite material on a current collector; a method for producing the negative electrode; and a lithium ion secondary battery containing the negative electrode.

Abstract: An all-solid-state lithium ion battery, including a solid electrolyte, a negative electrode, and a positive electrode. The solid electrolyte includes at least one selected from oxide-based and sulfide-based solid electrolytes, and has a 50% diameter (D50) in a cumulative particle diameter distribution on a volume basis of from 0.1 ?m to 10 ?m. The negative electrode includes the solid electrolyte, a negative electrode active material and a conductive additive. The negative electrode active material includes graphite particles each having an interlayer spacing d002 of a graphite crystal of from 0.3360 nm to 0.3370 nm and having a D50 of from 1 ?m to 10 ?m. The negative electrode includes 35 to 45 parts by mass of the negative electrode active material, 45 to 55 parts by mass of the solid electrolyte, and 5 to 10 parts by mass of the conductive additive.

Abstract: The present invention relates to a negative electrode material for a lithium ion battery, made of a composite material comprising silicon-containing particles, artificial graphite particles and a carbon coating layer, wherein the silicon-containing particles are silicon particles having a SiOx layer (0<x?2) on a particle surface, have an oxygen content ratio of 1 mass % or more and 18 mass % or less, and mainly comprise particles having a primary particle diameter of 200 nm or less; and the artificial graphite particles have a scale-like shape. By using the negative electrode material, a lithium ion battery having a high capacitance and excellent charge-discharge cycle characteristics can be produced.

Abstract: A negative electrode material for a lithium ion battery, including silicon-containing particles, artificial graphite particles and a carbonaceous material, wherein at least part of the silicon-containing particles, the artificial graphite particles and the carbonaceous material form composite particles; wherein the silicon-containing particles are silicon particles having a SiOx (0<x?2) layer on the particle surface, having an oxygen content of 1.0 mass % or more and 18.0 mass % or less, and mainly containing particles having a primary particle diameter of 200 nm or less; wherein the artificial graphite particles are non-flaky artificial graphite particles and have a 50% particle diameter in a volume-based cumulative particle size distribution, D50, of 1.0 ?m or more and 15.0 ?m or less. Also disclosed is a lithium-ion battery including a negative electrode using the negative electrode material.

Abstract: A composite electrode material consisting of a carbon coated complex oxide, fibrous carbon and a binder. Said material is prepared by a method which includes co-grinding an active electrode material and fibrous carbon, and adding a binder to the co-grinded mixture to lower the viscosity of the mixture. The fibrous carbon is preferably vapor grown carbon fibers.

Abstract: Powder comprising particles comprising a matrix material and silicon-based domains dispersed in this matrix material, whereby the matrix material is carbon or a material that can be thermally decomposed to carbon, whereby either part of the silicon-based domains are present in the form of agglomerates of silicon-based domains whereby at least 98% of these agglomerates have a maximum size of 3 ?m or less, or the silicon-based domains are not at all agglomerated into agglomerates.

Abstract: Composite powder for use in an anode of a lithium ion battery, whereby the particles of the composite powder comprise silicon-based domains in a matrix, whereby the individual silicon-based domains are either free silicon-based domains that are not or not completely embedded in the matrix or are fully embedded silicon-based domains that are completely surrounded by the matrix, whereby the percentage of free silicon-based domains is lower than or equal to 4 weight % of the total amount of Si in metallic or oxidized state in the composite powder.

Abstract: A composite carbon particle for use in a negative electrode of a lithium-ion secondary battery, the composite carbon particle including a core particle composed of a carbon material obtained by heating, at not higher than 2500° C., petroleum coke having a Hardgrove grindability index (HGI value) of 30 to 60 (defined by ASTM D409), and a covering layer composed of a carbonaceous material obtained by heating an organic compound at 1000° C. to 2000° C. The composite carbon particle has a 50% particle diameter (D50) of 1 ?m to 30 ?m in a volume-based cumulative particle size distribution as measured by a laser diffraction method.

Abstract: A negative electrode material for lithium ion batteries is obtained by a method which includes: mixing carbon particles (B) such as graphite particles, particles (A), such as Si particles, containing an element capable of occluding and releasing lithium ions, a carbon precursor such as sucrose, a carboxylic acid compound such as acetic acid, and a liquid medium such as water or isopropyl alcohol to prepare a slurry; drying and solidifying the slurry; and heat-treating the resulting solidified material to carbonize the carbon precursor. A lithium ion battery is obtained using this negative electrode material.

Abstract: Particles (A) including an element capable of intercalating and deintercalating lithium ions, carbon particles (B) capable of intercalating and deintercalating lithium ions, multi-walled carbon nanotubes (C), carbon nanofibers (D) and optionally electrically conductive carbon particles (E) are mixed in the presence of shear force to obtain a composite electrode material. A lithium ion secondary battery is obtained using the above composite electrode material.

Abstract: The present invention relates to a lithium battery positive electrode comprising an active substance that can occlude and release lithium ion, a carbon-based conductivity enhancer, and a binder, characterized in that the positive electrode contains the carbon-based conductivity enhancer in an amount of 0.1 to 2 mass % on the basis of the entire mass of the positive electrode, and that the carbon-based conductivity enhancer contains a carbon fiber having a mean fiber diameter of 1 to 200 nm, wherein the active substance that can occlude and release lithium ion is contained in an amount, as calculated from the true density of the active substance, of 70% by volume or more on the basis of the total volume of the positive electrode; and relates to a lithium battery using the a lithium battery positive electrode. The positive electrode obtained by the present invention has an excellent electrolyte permeability and electrolyte retention. Therefore, it is better adapted to high-density lithium battery.

Abstract: A carbon negative electrode material for a lithium secondary battery includes: a core carbon material; and a coated layer covering the core carbon material and comprising a carbon coating material and carbon fiber.

Abstract: The present invention relates to a negative electrode material for a lithium ion battery, made of a composite material comprising silicon-containing particles, artificial graphite particles and a carbon coating layer, wherein the silicon-containing particles are silicon particles having a SiOx layer (0<x?2) on a particle surface, have an oxygen content ratio of 1 mass % or more and 18 mass % or less, and mainly comprise particles having a primary particle diameter of 200 nm or less; and the artificial graphite particles have a scale-like shape. By using the negative electrode material, a lithium ion battery having a high capacitance and excellent charge-discharge cycle characteristics can be produced.

Abstract: A production method for a composite of fine particles (A) and carbon particles (B), including the steps of: mixing fine particles (A) formed of a substance comprising at least one kind of Si, Sn, Al, Ge and In; and molten pitch, to obtain a mixture (1); pulverizing the mixture (1) to obtain a pulverized product (2a); dry-mixing the pulverized product (2a) and carbon particles (B) to obtain a mixture (3a); and firing the mixture (3a), followed by pulverization; or including the steps of: adding carbon particles (B) to the mixture (1), followed by dry mixing and pulverizing, to obtain a pulverized product (2b); and firing the pulverized product (2b), followed by pulverization.

Abstract: A graphite material having pores which, when 200 rectangular regions of 6 ?m×8 ?m are randomly selected in a surface image of the graphite material observed by a scanning electron microscope, in the surface of the graphite material appearing in the regions, a pore appearing on the surface and having an aperture in a shape having a diameter of 15 nm to 200 nm, a circularity degree of 0.75 to 1.0 and a major axis/minor axis ratio of 1.0 to 1.5 is visible in two regions or more. Also disclosed is a carbon material for battery electrodes, a paste for electrodes, an electrode and a lithium ion secondary battery including the graphite material.