Abstract: A manufacturing method of a semiconductor apparatus according to an embodiment includes forming an electrode on a first main surface of a semiconductor substrate made from a compound semiconductor; forming, at a location where the electrode is formed, a via hole that penetrates the first main surface and a second main surface of the semiconductor substrate, wherein a ratio of a thickness of the semiconductor substrate to a maximum value of a width of an opening in the second main surface is greater than 1; forming a rear-side electrode on a second main surface of the semiconductor substrate in such a manner that the rear-side electrode is electrically coupled to the electrode in the via hole; forming an insulating layer arranged at least a layer above the opening; and forming a solder layer in a layer above the rear-side electrode and the insulating layer.

Abstract: This negative electrode for secondary batteries is provided with a negative electrode mixture layer which comprises a binder material and a negative electrode active material that contains graphite particles and an Si-containing material; the Si-containing material contains an Si-containing material A which comprises a carbon phase and silicon particles that are dispersed in the carbon phase; in cases where the negative electrode mixture layer is divided into equal halves in the thickness direction, the average intraparticle void fraction of the graphite particles contained in the upper half region is 13% or less, and is smaller than the average intraparticle void fraction of the graphite particles contained in the lower half region.

Abstract: This negative electrode for a secondary battery comprises a negative electrode mixture layer that includes: a negative electrode active material containing graphite particles and a Si-containing material; and a binder. The Si-containing material includes a Si-containing material A that includes a carbon phase and silicon particles dispersed in the carbon phase. The graphite particles include graphite particles A with 5% or less particle internal porosity, and the content of the graphite particles A is at least 10% by mass with respect to the total mass of the negative electrode active material. The content of the Si-containing material A is at least 1% by mass with respect to the total mass of the negative electrode active material.

Abstract: A nonaqueous electrolyte secondary battery according to one embodiment of the present disclosure is provided with a positive electrode, a negative electrode and a nonaqueous electrolyte, while being characterized in that: the negative electrode comprises a negative electrode active material that contains an Si-containing material; the Si-containing material contains a first Si-containing material which comprises a silicate phase and silicon particles that are dispersed in the silicate phase, and a second Si-containing material which comprises a carbon phase and silicon particles that are dispersed in the carbon phase; and the difference between the initial charge/discharge efficiency (Efc) of the positive electrode and the initial charge/discharge efficiency (Efa) of the negative electrode, namely (Efc?Efa) satisfies 1%<(Efc?Efa)<8%.

Abstract: A negative electrode for lithium ion secondary batteries according to the present invention is provided with a negative electrode collector and a negative electrode mixture layer that is formed on the negative electrode collector; the negative electrode mixture layer comprises a negative electrode active material which contains graphite particles A that have an internal porosity of 10% or less, graphite particles B that have an internal porosity of more than 10%, and an alloying material that is alloyed with lithium; and the content of the alloying material is 15% by mass or less relative to the total amount of the negative electrode active material in the negative electrode mixture layer.

Abstract: This negative electrode is provided with a negative electrode current collector, and a negative electrode mixture layer formed on the negative electrode current collector, wherein: the negative electrode mixture layer comprises a first layer arranged on the negative electrode current collector, and a second layer arranged on the first layer; the second layer includes graphite particles A having a particle internal porosity of at most 10%: the first layer includes graphite particles B having a particle internal porosity of more than 10%; and the second layer has a water contact angle of at most 50°.

Abstract: A negative electrode for a non-aqueous electrolyte secondary battery including a negative electrode mixture layer including a negative electrode active material and a negative electrode additive, the negative electrode active material including a carbon material and a Si-containing material, the content of the Si-containing material in the negative electrode mixture layer being 5 mass % or more, and the negative electrode additive including a formaldehyde condensate of an aromatic organic acid having a hydroxyl group and/or an aromatic organic acid salt having a hydroxyl group.

Abstract: A method of manufacturing an electrode includes: an application process of applying mixture slurry containing a dispersion medium and an electrode mixture that contains an electrode active material onto a surface of a core material sheet to form a first electrode plate having a wet coating film; a drying process of heating the first electrode plate at a first temperature to volatilize the dispersion medium from the wet coating film to form a second electrode plate having a dry coating film; and a firing process of heating the second electrode plate at a second temperature higher than the first temperature to obtain a fired third electrode plate. In the firing process, the second electrode plate is heated at the second temperature while being transported by a roll-to-roll method.

Abstract: A nonaqueous electrolyte secondary battery according to an embodiment of the present disclosure comprises a positive electrode, a negative electrode, and a nonaqueous electrolyte. The positive electrode has: a positive electrode current collector; and a positive electrode active material layer that is provided to the surface of the positive electrode current collector and includes a positive electrode active material and a positive electrode additive. The positive electrode active material contains a lithium-nickel composite oxide having a compressive breaking strength of at least 130 MPa and including at least 50 mol % of nickel relative to the total quantity of metals other than lithium. The positive electrode additive contains a lithium-containing metal oxide that has an antifluorite structure.

Abstract: A life estimation apparatus includes a second calculation unit that calculates a remaining capacity, which is a capacity with which the lithium ion secondary cell is capable of being charged or which the lithium ion secondary cell is capable of discharging, based on Equation 1 having an exponent n1 of 0.9 to 1.1 and Equation 2 having an exponent n2 of 0.4 to 0.6. The second calculation unit calculates the remaining capacity using Equation 1 if the amount of change of open circuit voltage, the amount of change of a voltage rise width, or the amount of change of a voltage rise rate has a positive value and calculates the remaining capacity using Equation 2 if the amount of change of the open circuit voltage, the amount of change of the voltage rise width, or the amount of change of the voltage rise rate has a negative value.

Abstract: A positive electrode for non-aqueous electrolyte secondary batteries has a mix layer which contains composite oxide particles each containing Ni, Co and Li and also contains Mn and/or Al, a conductive material, and poly(vinyl alcohol) having a saponification degree of 85% or less. In the composite oxide particles, the content of Ni relative to the total number of moles of metal elements other than Li is 50 mol % or more, and the ratio of the BET specific surface area A (m2/g) to the theoretical specific surface area B (m2/g) as determined in accordance with the below-mentioned formula, i.e., (A/B), is 1.0 to 4.3 exclusive.

Abstract: A non-aqueous electrolyte secondary battery according to one embodiment of the present disclosure is provided with a positive electrode, a negative electrode, and a non-aqueous electrolyte, wherein the positive electrode includes a positive electrode active material containing a composite oxide particle that includes Ni, Co and Li, and also includes at least one among Mn and Al, and the ratio of Ni to the total number of moles of metal elements excluding Li is 50 mol % or more. In the composite oxide particle, the ratio (A/B) of a BET specific surface area (A) to a theoretical specific surface area (B) determined by the following formula is more than 1.0 and less than 3.3. Theoretical specific surface area (B) (m2/g)=6/(true density (g/cm3)×volume average particle diameter (?m)).

Abstract: This nonaqueous electrolyte secondary battery is provided with a positive electrode, a negative electrode and a nonaqueous electrolyte. The nonaqueous electrolyte comprises a nonaqueous solvent that contains a fluorine-containing cyclic carbonate; the positive electrode comprises a positive electrode active material that contains composite oxide particles which contain Ni, Co and Li, while containing at least one of Mn and Al, and wherein the proportion of Ni relative to the total number of moles of the metal elements excluding Li is 50% by mole or more; and the composite oxide particles are in a non-aggregated state, while having a compressive strength of 250 MPa or more.

Abstract: Provided is a nonaqueous electrolyte secondary battery comprising: a negative electrode having a negative electrode active substance layer; a positive electrode; and a nonaqueous electrolyte containing a nonaqueous solvent. The negative electrode active substance layer contains: a negative electrode active substance containing a carbon-based active substance; and layered silicate particles. The nonaqueous solvent contains a fluorine-based solvent.

Abstract: A battery module includes multiple cells that are connected in parallel to each other and a positive-side lead plate electrically connected to a positive electrode of each cell. The battery module further includes a potential difference detection unit that detects three potential differences between two points of three points on the positive-side lead plate and a microcomputer that determines an abnormality of one cell based on a signal indicating the three potential differences between two points from the potential difference detection unit.

Abstract: A life estimation apparatus includes a second calculation unit that calculates a remaining capacity, which is a capacity with which the lithium ion secondary cell is capable of being charged or which the lithium ion secondary cell is capable of discharging, based on Equation 1 having an exponent n1 of 0.9 to 1.1 and Equation 2 having an exponent n2 of 0.4 to 0.6. The second calculation unit calculates the remaining capacity using Equation 1 if the amount of change of open circuit voltage, the amount of change of a voltage rise width, or the amount of change of a voltage rise rate has a positive value and calculates the remaining capacity using Equation 2 if the amount of change of the open circuit voltage, the amount of change of the voltage rise width, or the amount of change of the voltage rise rate has a negative value.