Abstract: A technique for suppressing formation of a black region in a wound electrode body is provided. A method for fabricating a nonaqueous electrolyte secondary battery disclosed here includes: an assembly step of constructing a secondary battery assembly including a wound electrode body; and an initial charging step of performing initial charging on the secondary battery assembly. In the initial charging step, the secondary battery assembly is charged at a first charging rate until a negative electrode potential with respect to a lithium metal reference (vs. Li/Li+) of the secondary battery assembly reaches at least 0.5 V, and a remaining gas amount of the wound electrode body at the end of the initial charging step is 58 cc or less.

Abstract: An etching method includes: providing a substrate having a film and a patterned mask on the film; forming a silicon-containing layer including silicon, carbon, and nitrogen on the substrate using a precursor gas containing silicon; and performing a plasma etching on the film. The substrate is placed under a depressurized environment for a time period from a start time point of the step of forming the silicon-containing layer on the substrate to an end time point of the step of performing the plasma etching on the film.

Abstract: A plasma processing apparatus includes a source RF generator and a bias RF generator. The source RF signal has a first source power level in a first deposition priority period and a second deposition priority period, and has a second source power level smaller than the first source power level in a first etching priority period and a second etching priority period. The first deposition priority period is shorter than the second deposition priority period. The first etching priority period is longer than the second etching priority period. The bias RF signal has a first bias power level in the first deposition priority period and the second deposition priority period, and has a second bias power level larger than the first bias power level in the first etching priority period and the second etching priority period.

Abstract: Provided is a technique for preventing plastic deformation of a battery case due to restraint during initial charging. A manufacturing method disclosed herein is a manufacturing method of a non-aqueous electrolyte solution secondary battery. This method includes assembling to construct a secondary battery assembly, and initial charging of the secondary battery assembly. In the initial charging, the initial charging is started with the secondary battery assembly restrained or not restrained; when a negative electrode potential of the secondary battery assembly reaches 0.6 V, a restraint force P1 is applied to the secondary battery assembly, wherein the restraint force P1 is greater than a restraint force applied before the negative electrode potential reaches 0.6 V; and the restraint force P1 is applied to the secondary battery assembly until the negative electrode potential reaches at least 0.3 V.

Abstract: Provided is a technique for preventing plastic deformation of a battery case due to restraint during initial charging. A manufacturing method disclosed herein is a manufacturing method of a non-aqueous electrolyte solution secondary battery. This method includes assembling to construct a secondary battery assembly, and initial charging of the secondary battery assembly. In the initial charging, the initial charging is started with the secondary battery assembly restrained or not restrained; when a negative electrode potential of the secondary battery assembly reaches 0.6 V, a restraint force P1 is applied to the secondary battery assembly, wherein the restraint force P1 is greater than a restraint force applied before the negative electrode potential reaches 0.6 V; and the restraint force P1 is applied to the secondary battery assembly until the negative electrode potential reaches at least 0.3 V.

Abstract: Provided is a technology capable of improving the impregnation efficiency of an electrolyte into an electrode body. In accordance with a preferable one embodiment of a method for manufacturing a secondary battery herein disclosed, a method for manufacturing a secondary battery including an electrode body, an electrolyte, and a battery case is provided. The manufacturing method includes a solution introducing step of introducing the electrolyte into the battery case, and a pressure reducing step of reducing the pressure in the battery case after the solution introducing step. After an elapse of 10 hours or more after the solution introducing step, the pressure reducing step is carried out.

Abstract: According to the present disclosure, a secondary battery capable of inhibiting precipitation of metallic lithium is provided. A secondary battery disclosed herein includes a wound electrode body, and a battery case. An insufficiently stacked region is formed in the vicinity of a positive electrode starting end portion in a flat portion of the electrode body. In the insufficiently stacked region, the total number of layers of a positive electrode plate and a negative electrode plate is smaller than in other regions in the flat portion. In addition, in the secondary battery, a protruding portion protruding toward at least a part of the insufficiently stacked region is formed on an inner surface of the battery case. As a result, it is possible to prevent pressing failure in the insufficiently stacked region and inhibit precipitation of metal Li due to a local increase in an inter-electrode distance.

Abstract: A disclosed etching method includes (a) preparing a substrate in a chamber, (b) forming a deposit on the substrate, (c) supplying ions from a plasma generated from the process gas to the deposit to modify the deposit, and (d) etching the dielectric film by using a plasma after (c). The substrate includes a dielectric film and a mask. The deposit is supplied from a plasma generated from a process gas containing a gas component containing fluorine and carbon. A power level of a source radio frequency power in (c) is not higher than a power level of the source radio frequency power in (b). An electric bias has a level in (c) higher than a level of the electric bias in (b), or is not supplied in (b). A level of the electric bias in (d) is higher than the level of the electric bias in (c).

Abstract: The present disclosure relates to a method of producing an electrode assembly for a non-aqueous electrolyte secondary battery, comprising a pressing step that involves pressing a stack including a positive electrode plate, a negative electrode plate, and a separator, in which the separator comprises a base material and an adhesive layer, and the adhesive layer is placed on at least one side of the base material and includes an adhesion resin, at a temperature not higher than a glass transition point of the adhesion resin and at a pressure from 8 to 20 MPa to obtain an electrode assembly for a non-aqueous electrolyte secondary battery, wherein an area ratio of the adhesive layer to the base material in a plan view of the separator is from 10 to 70%.

Abstract: A non-aqueous electrolyte secondary battery comprises an electrode assembly having a positive electrode, a negative electrode, and a separator, as well as an electrolyte solution and a battery case. The battery case has an exterior package and a sealing plate. The positive electrode has a positive electrode tab at an end of the electrode assembly, and the negative electrode has a negative electrode tab at an end of the electrode assembly. The electrode assembly is accommodated inside the battery case in such a manner that the end having the positive electrode tab and the end having the negative electrode tab face the sealing plate. T1 and T2 have the meanings as defined in the claims and the description, and satisfy a relationship of the following expression (I). 1.05?T2/T1?1.

Abstract: The present disclosure relates to a non-aqueous electrolyte secondary battery comprising a wound-type electrode assembly and an electrolyte solution. In the non-aqueous electrolyte secondary battery according to the present disclosure, a dimension of at least one of a positive electrode active material layer and a negative electrode active material layer in a direction of an axis of winding of the electrode assembly is 150 mm or more, the electrolyte solution includes an electrolyte salt and LiFSO3, the electrolyte salt includes at least one of LiPF6 and LiBF4, a ratio of a total concentration A (mol/L) of LiPF6 and LiBF4 to a concentration B (mol/L) of LiFSO3 in the electrolyte solution, which is expressed as an A/B ratio, is from 5 to 12, and a pressure of 0.5 MPa or more is applied to the electrode assembly in an electrode plate stacking direction.

Abstract: A non-aqueous electrolyte secondary battery comprises an electrode assembly and an electrolyte solution. The electrode assembly is a wound-type electrode assembly or a stack-type electrode assembly each of which comprises a positive electrode plate having an active material layer. To the non-aqueous electrolyte secondary battery, a restraining pressure of 0.5 MPa or more is applied in a stacking direction of the positive electrode plates. The electrolyte solution includes LiFSO3, and the electrolyte solution has an electrical conductivity of 0.86 S/m or more at 25° C.

Abstract: This non-aqueous electrolyte secondary cell electrode binder includes at least: a carboxymethyl cellulose which has a carboxymethyl substitution degree per anhydroglucose unit of 0.5-1.2, and a 1 mass % aqueous solution viscosity, measured by a B-type viscometer (30 rpm) at 25° C., of 1,000-20,000 Pa·s and/or a salt thereof; and a borate. The non-aqueous electrolyte secondary cell electrode binder preferably includes the borate in the range of 0.1-20 mass % with respect to 100 mass % of the solid content of the carboxymethyl cellulose or salt thereof.

Abstract: The present disclosure relates to a non-aqueous electrolyte secondary battery, wherein an electrolyte solution includes a solvent, a lithium salt, and an additive agent, the additive agent includes at least one selected from a group consisting of a boron compound having an oxalate group and a compound having a fluorosulfonyl group, a BET specific surface area of a negative electrode active material layer is 1.8 m2/g or more and 3.0 m2/g or less, the negative electrode active material layer includes a particle group consisting of a negative electrode active material particle, an average sphericity of the particle group is 0.87 or more.

Abstract: The present disclosure relates to a non-aqueous electrolyte secondary battery including an electrode assembly and an electrolyte solution, wherein the electrode assembly includes a positive electrode plate, a separator, and a negative electrode plate, the electrolyte solution contains a Li salt, a solvent, and an additive agent, the positive electrode plate includes a positive electrode core body and a positive electrode active material layer, the negative electrode plate includes a negative electrode core body and a negative electrode active material layer, and in at least one of the positive electrode active material layer and the negative electrode active material layer, a ratio A/B is 1.4 or more and 2.6 or less.

Abstract: A substrate processing method includes: providing a substrate including a first region and a second region into a chamber; forming a deposit film on the first region and the second region of the substrate by generating a first plasma from a first processing gas, and selectively etching the first region with respect to the second region by generating a second plasma from the second processing gas containing an inert gas. The first processing gas is a mixed gas including a first gas containing carbon atoms and fluorine atoms and a second gas containing silicon atoms.

Abstract: Provided is a technology capable of improving the impregnation efficiency of an electrolyte into an electrode body. In accordance with a preferable one embodiment of a method for manufacturing a secondary battery herein disclosed, a method for manufacturing a secondary battery including an electrode body, an electrolyte, and a battery case is provided. The manufacturing method includes a solution introducing step of introducing the electrolyte into the battery case, and a pressure reducing step of reducing the pressure in the battery case after the solution introducing step. After an elapse of 10 hours or more after the solution introducing step, the pressure reducing step is carried out.

Abstract: An ECU is configured to execute SOC estimation control for estimating an SOC of a battery. The ECU obtains “first voltage” indicating an OCV of the battery in the SOC estimation control. The ECU controls an engine and a PCU such that the battery is charged with an amount of electric power equal to or larger than a prescribed amount, when the first voltage is within a voltage range where hysteresis occurs. The ECU obtains “second voltage” indicating an OCV of the charged battery, and estimates the SOC of the battery from the second voltage.

Abstract: Component A: a carboxymethyl cellulose having a degree of carboxymethyl substitution per anhydroglucose unit of 0.45 or more or a salt thereof and Component B: a saturated carboxylic acid having 6 or less carbon atoms or a salt thereof are contained.

Abstract: W1/T1 is equal to or greater than 5, assuming that the width of an electrode body in a direction perpendicular to a winding axis direction and a thickness direction of the electrode body is W1 (mm) and the thickness of the electrode body 3 is T1 (mm).