Abstract: The present invention is a negative electrode material for a non-aqueous electrolyte secondary battery, including negative electrode active material particles containing a silicon compound expressed by SiOx, where 0.5?x?1.6, the silicon compound containing in its interior a lithium compound and one or more ions selected from Group 1 metal ions, Group 2 metal ions, and substitutable ammonium ions. This negative electrode material for a non-aqueous electrolyte secondary battery can increase the battery capacity and improve the cycle performance and the battery initial efficiency.

Abstract: A negative electrode active material for nonaqueous electrolyte secondary batteries including: a particle of negative electrode active material, wherein the particle of negative electrode active material contains a particle of silicon compound containing a silicon compound (SiOx:0.5?x?1.6), on at least a part of a surface of the silicon compound a carbon coating film being formed, and the negative electrode active material contains 2% by mass or less of particle of silicon dioxide and the negative electrode active material contains a silicon dioxide-carbon composite secondary particle containing a plurality of the particles of silicon dioxide and carbon. As a result, the negative electrode active material for nonaqueous electrolyte secondary batteries capable of increasing battery capacity and improving the cycle characteristics and battery initial efficiency is provided.

Abstract: Negative electrode active material, wherein the negative electrode active material comprises a negative electrode active material particle; the negative electrode active material particle comprises silicon compound particle comprising a silicon compound (SiOx: 0.5?x?1.6); the silicon compound particle comprises at least any one or more of Li2SiO3 and Li4SiO4; the negative electrode active material comprises 2% by mass or less of silicon dioxide particle and comprises a silicon dioxide-carbon composite secondary particle comprising a plurality of the silicon dioxide particles and carbon; and the composite secondary particle includes a lithium compound in at least part of a portion other than a silicon dioxide or a silicon compound (SiOx: 0.5?x?1.6) in the composite secondary particle.

Abstract: A negative electrode active material contains particles of negative electrode active material, wherein, the particles of negative electrode active material contain particles of silicon compound which contain a silicon compound (SiOx: 0.5?x<1.0), the particles of silicon compound contain lithium, and when the negative electrode active material is used for a negative electrode of a secondary battery having metal lithium as a counter electrode, and 1.2 V constant current discharge is carried out after 0 V constant current and constant voltage charging of the secondary battery, an obtained discharge capacity is 1,550 mAh/g or more and 2,200 mAh/g or less. According to this constitution, a negative electrode active material capable of improving discharge capacity, cycle characteristics and initial charge and discharge characteristics can be provided when it is used for a negative electrode active material of the secondary battery.

Abstract: A battery capable of improving the cycle characteristics is provided. The battery includes a cathode, an anode, and an electrolytic solution. The anode includes an anode active material layer containing an anode active material having silicon as an element, and a coating layer that coats the anode active material layer, and contains an oxide of a 3d transition metal element at least one selected from the group consisting of iron, cobalt, and nickel.

Abstract: A negative electrode active material comprising: particles of negative electrode active material, wherein the particles of negative electrode active material contain particles of silicon compound containing a silicon compound (SiOx:0.5?x?1.6), and wherein the particles of silicon compound have, as chemical shift values obtained from a 29Si-MAS-NMR spectrum, an intensity A of a peak derived from amorphous silicon obtained in ?40 to ?60 ppm, an intensity B of a peak derived from silicon dioxide obtained in the vicinity of ?110 ppm, and an intensity C of a peak derived from Si obtained in the vicinity of ?83 ppm, which satisfy the following formula 1 and formula 2. B?1.

Abstract: The present disclosure relates to a negative electrode active material including: particles of negative electrode active material, wherein the particles of negative electrode active material contain particles of silicon compound containing a silicon compound (SiOx: 0.55?x?1.6), and the particles of silicon compound includes at least one or more kinds of Li2SiO3 and Li4SiO4; the particles of silicon compound contain nickel; and, a mass of the nickel to a mass of the particles of negative electrode active material is 2 mass ppm or more and 100 mass ppm or less. Thus, when used as the negative electrode active material of a secondary battery, a negative electrode active material capable of improving the initial charge/discharge characteristics and cycle characteristics is provided.

Abstract: A negative electrode active material for non-aqueous electrolyte secondary batteries which has particles of negative electrode active material, the particles of negative electrode active material containing a silicon compound (SiOx: 0.5?x?1.6) that contains a Li compound, including a carbon coating on at least a part of a surface of the silicon compound and a salt coating containing one or more kinds of a metal silicate containing a metal element other than a lithium element and a metal salt containing a metal element other than the lithium element on a part of a surface of the silicon compound or a surface of the carbon coating or both of these. Thus, the negative electrode active material for non-aqueous electrolyte secondary batteries having high stability to an aqueous slurry, high capacity and excellent cycle characteristics and initial efficiency may be provided.

Abstract: A production method of a negative electrode active material containing a silicon compound (SiOx: 0.5?x?1.6) that contains Lithium includes: making a silicon compound into which the lithium has been inserted contact with a solution B containing a polycyclic aromatic compound or a derivative thereof or both thereof (here, the solution B contains one or more kinds selected from an ether-based solvent, a ketone-based solvent, an ester-based solvent, an alcohol-based solvent, and an amine-based solvent as a solvent); and making the silicon compound contact with a solution C (here, the solution C contains one or more kinds selected from an ether-based material, a ketone-based material, and an ester-based material as the solvent, and contains a compound having a quinoid structure in a molecule as a solute).

Abstract: The invention provides a rotary tubular furnace including a rotatable furnace tube having an inlet end through which silicon compound particles (SiOx where 0.5?x<1.6) are put therein and an outlet end through which the particles coated with carbon are taken out therefrom; and a heating chamber having a heater to heat the furnace tube, wherein the furnace tube is composed of a heat portion inside the heating chamber and a non-heat portion outside the heating chamber, a length B of the heat portion and an overall length A of the furnace tube satisfy 0.4?B/A<1, and a distance C between the heat portion and the outlet end and the overall length A satisfy 0.04?C/A?0.35. This furnace can inhibit clogging of the furnace tube and mass-produce a negative electrode active material for a non-aqueous electrolyte secondary battery having a high capacity with inhibited variations in the amount of carbon coating and crystallinity.

Abstract: The present invention addresses the problem of providing: a negative electrode that is for a lithium ion secondary battery, that has high initial charge/discharge efficiency, and that has high energy density; a lithium ion secondary battery comprising the negative electrode for a lithium ion secondary battery; and a method for producing the negative electrode for a lithium ion battery that makes it possible to efficiently pre-dope an alkali earth metal or an alkali metal such as lithium. In order to solve this problem, this negative electrode for a lithium ion secondary battery comprises a negative electrode mixture layer containing at least: an alloy material (A) comprising tin or silicon capable of occluding lithium; carbon particles (B); an imide bond-containing polymer (C); and a polycyclic aromatic compound (D). The amount of the imide bond-containing polymer (C) within the negative electrode mixture layer is 3-13 mass %.

Abstract: A negative electrode active material for a non-aqueous electrolyte secondary battery, wherein: negative electrode active material particles that contain a silicon compound (SiOx: 0.5?x?1.6) having a carbon coating on a surface, wherein the carbon coating exhibits a G?-band peak at a Raman shift in a range of 2600 cm?1 to 2760 cm?1 and a G-band peak at a Raman shift in a range of 1500 cm?1 to 1660 cm?1 in a Raman spectrum obtained by Raman spectrometry, and the G?-band peak and the G-band peak satisfy 0<IG?/IG?0.6 where IG? and IG are intensities of the G?-band peak and the G-band peak, respectively. This provides a negative electrode active material having a high capacity retention rate and high initial efficiency.

Abstract: A production method of a negative electrode active material for non-aqueous electrolyte secondary batteries containing a silicon compound (SiOx: 0.5?1.6) that contains Li, includes: making a silicon compound into which the lithium has been inserted contact with a solution B containing a polycyclic aromatic compound or a derivative thereof or both thereof (here, the solution B contains one or more kinds selected from an ether-based solvent, a ketone-based solvent, an ester-based solvent, an alcohol-based solvent, and an amine-based solvent as the solvent); and making the silicon compound contact with a solution C (here, the solution C contains one or more kinds selected from an alcohol-based solvent, a carboxylic acid-based solvent, and water as the solvent). Thereby, a production method of a negative electrode active material for non-aqueous electrolyte secondary batteries is capable of increasing a battery capacity and improving the cycle characteristics.

Abstract: A negative electrode active material including: a particle of negative electrode active material containing silicon-based material of SiOx (0.5?x?1.6); wherein the intensity A of a peak in a Si-region given in the chemical shift region of from ?50 to ?95 ppm and the intensity B of a peak in a SiO2-region given in the chemical shift region of from ?96 to ?150 ppm in a 29Si-MAS-NMR spectrum of the silicon-based material satisfy a relationship that A/B?0.8. This provides a negative electrode active material which can increase a battery capacity, and can improve cycle characteristics and initial charge/discharge characteristics when used as a negative electrode active material for a lithium ion secondary battery.

Abstract: A negative electrode active material for a non-aqueous electrolyte secondary battery, includes: negative electrode active material particles that contain a silicon compound (SiOx: 0.5?x?1.6) containing a Li compound, wherein the silicon compound is at least partially coated with a carbon coating, and at least a part of a surface of the silicon compound, a surface of the carbon coating, or both of them are coated with a composite layer that contains a composite composed of amorphous metal oxide and metal hydroxide. This provides a negative electrode active material for a non-aqueous electrolyte secondary battery that is highly stable in aqueous slurry, having a high capacity, favorable cycle performance and first efficiency.

Abstract: The present invention is a negative electrode active material for a negative electrode active material layer of a lithium ion secondary battery, wherein: the negative electrode active material comprises silicon-based material consisting of SiOx (0.5?x?1.6); and the negative electrode active material has two or more peaks in a region of a bond energy ranging from 520 eV to 537 eV in an O 1s peak shape given in an X-ray photoelectron spectroscopy. As a result, it is possible to provide a negative electrode active material in which a battery capacity can be increased and cycle characteristics and initial charge/discharge characteristics can be improved when used as a negative electrode active material for a lithium ion secondary battery.

Abstract: A negative electrode active material for a non-aqueous electrolyte secondary battery, including: negative electrode active material particles that contain a silicon compound containing a Li compound; wherein the silicon compound is at least partially coated with a carbon coating, the negative electrode active material particles are coated with a coating composed of at least one of a compound having a boron-fluorine bond and a compound having a phosphorous-fluorine bond on at least a part of the surface of either or both of the silicon compound and the carbon coating, the negative electrode active material particles contain a boron or a phosphorous element in a range of 10 to 10000 ppm by mass with respect to the total amount of negative electrode active material particles. This provides a negative electrode active material for a non-aqueous electrolyte secondary battery that can increase battery capacity and improve cycle performance.

Abstract: A negative electrode active material including: a particle of negative electrode active material containing silicon-based material of SiOx (0.5?x?1.6); wherein the intensity A of a peak in a Si-region given in the chemical shift region of from ?50 to ?95 ppm and the intensity B of a peak in a SiO2-region given in the chemical shift region of from ?96 to ?150 ppm in a 29Si-MAS-NMR spectrum of the silicon-based material satisfy a relationship that A/B?0.8. This provides a negative electrode active material which can increase a battery capacity, and can improve cycle characteristics and initial charge/discharge characteristics when used as a negative electrode active material for a lithium ion secondary battery.

Abstract: The present invention is a negative electrode active material for a negative electrode active material layer of a lithium ion secondary battery, wherein: the negative electrode active material comprises silicon-based material consisting of SiOx (0.5?x?1.6); and the negative electrode active material has two or more peaks in a region of a bond energy ranging from 520 eV to 537 eV in an O 1s peak shape given in an X-ray photoelectron spectroscopy. As a result, it is possible to provide a negative electrode active material in which a battery capacity can be increased and cycle characteristics and initial charge/discharge characteristics can be improved when used as a negative electrode active material for a lithium ion secondary battery.

Abstract: A battery is provided including a positive electrode; a negative electrode including a first negative electrode active material; and an electrolytic solution, wherein the first negative electrode active material includes a core portion having a core portion surface, wherein the core portion has a median diameter of 0.3 ?m to 20 ?m, and a covering portion that covers at least part of the core portion surface, wherein the covering portion comprises at least Si, O and at least of one element M1 selected from Li, carbon (C), Mg, Al, Ca, Ti, Cr, Mn, Fe, Co, Ni, Cu, Ge, Zr, Mo, Ag, Sn, Ba, W, Ta, Na, and K.