Abstract: A vehicular antenna device includes: a first antenna configured to support radio waves in a first frequency band; and a second antenna configured to support radio waves in a second frequency band different from the first frequency band. Further, at least part of an element included in the second antenna resonates in the first frequency band.

Abstract: A hydrogen production system includes a hydrogen generation device to generate hydrogen, and a compressor to compress the hydrogen. The hydrogen generation device and the compressor are connected by a first line. The compressor and a hydrogen utilization equipment to utilize the hydrogen compressed by the compressor are connected by a second line. A hydrogen storage unit to store the hydrogen compressed by the compressor is connected to the first line by a first bypass line. The first bypass line has a first control valve to control a flow of the hydrogen in the first bypass line.

Abstract: A hydrogen production system includes: cell stacks to produce hydrogen by electrolyzing water using supplied power; and a control unit. The control unit controls at least one specific cell stack of the cell stacks. The control unit selectively executes a load adjustment control to adjust a voltage or current of the power supplied to the specific cell stack, based on the amount of hydrogen production required for the entirety of the cell stacks, and an ON/OFF control to turn ON or OFF the power supplied to the specific cell stack.

Abstract: A nonaqueous electrolyte energy storage device according to one aspect of the present invention includes: a positive electrode including a lithium transition metal composite oxide containing a nickel element and a manganese element; and a negative electrode including solid graphite, the solid graphite has a porosity of 2% or less, and the content of the nickel element with respect to the transition metal element in the lithium transition metal composite oxide is 40 mol % or more.

Abstract: A negative electrode according to one aspect of the present invention is a negative electrode for an energy storage device including a negative active material layer containing solid graphite, in which the solid graphite has an average circularity of 0.7 or less, and the negative active material layer further contains carbon fine particles.

Abstract: An air discharge device includes a duct that defines a flow passage through which a working air flow to be discharged passes, and a hole forming member defining an air discharge hole as an outlet of the working air flow. The hole forming member has a vortex generation structure configured to generate an auxiliary vortex having a vortex characteristic including a vortex rotation direction and a vortex axis direction. The vortex characteristic of the auxiliary vortex is different from that of a lateral vortex generated by the working air flow at a downstream side of the air discharge hole. The vortex generation structure is configured in the hole forming member so that the auxiliary vortex collides with the lateral vortex in a state where at least one of the vortex rotation direction and the vortex axial direction of the vortex characteristic is different from that of the lateral vortex.

Abstract: An energy storage device according to one aspect of the present invention includes: a negative electrode including a negative active material layer; and a nonaqueous electrolyte. The negative active material layer contains a negative active material. The negative active material contains natural graphite particles. The natural graphite particles have an internal porosity of 2% or less. A state of charge of the negative active material in a charged state is 0.6 or less.

Abstract: An antenna device that is attached to a vehicle, the antenna device including: a resin base; a metal base arranged on the resin base; a metal plate located above the resin base and attached to the metal base so as to be superimposed on a portion of the metal base; a substrate arranged on the metal base; an antenna connected to the substrate; and a plurality of fasteners which fix the metal base and the substrate, wherein one of the plurality of fasteners is positioned at a top-view superimposed area of the metal base and the metal plate.

Abstract: Provided is a method for separating impurities and cobalt without using an electrolysis process from a cobalt chloride solution containing impurities and producing a high purity cobalt sulfate.

Abstract: An antenna device that is attached to a vehicle, the antenna device including: a resin base; a metal base arranged on the resin base; a metal plate located above the resin base and attached to the metal base so as to be superimposed on a portion of the metal base; a substrate arranged on the metal base; an antenna connected to the substrate; and a plurality of fasteners which fix the metal base and the substrate, wherein one of the plurality of fasteners is positioned at a top-view superimposed area of the metal base and the metal plate.

Abstract: Provided is a method for separating impurities and cobalt without using an electrolysis process from a cobalt chloride solution containing impurities and producing a high purity cobalt sulfate.

Abstract: A heat conduction device includes a heat source portion, a temperature control surface, and heat transfer portions. The heat source portion is configured to generate at least hot heat or cold heat. The temperature control surface is sectioned into a plurality of temperature control sections, and at least some of the plurality of temperature control sections are disposed away from the heat source portion. The plurality of heat transfer portions connect the heat source portion and the plurality of the temperature control sections to transfer heat between the heat source portion and the plurality of temperature control sections. The plurality of temperature control sections are separated from each other based on a distance from the heat source portion.

Abstract: An aspect of the present invention is a nonaqueous electrolyte energy storage device including: a negative electrode including a negative active material layer with a thickness expansion rate of 10% or more due to charge; and a separator, in which the absolute value (|dR/dP|) of an increase in resistance (dR) to a change in pressure (dP) in pressurization is 0.15 ?·cm2/MPa or less in the separator impregnated with a measurement electrolyte solution, the measurement electrolyte solution contains an ethylene carbonate and an ethyl methyl carbonate as a solvent, and a lithium hexafluorophosphate as an electrolyte salt, the volume ratio between the ethylene carbonate and the ethyl methyl carbonate is 30:70, and the concentration of the lithium hexafluorophosphate is 1.0 mol/L.

Abstract: An antenna device for vehicle that is attached to a vehicle, the antenna device for vehicle including: a resin base; a metal base arranged on the resin base; a metal plate whose portion is attached to the metal base so as to be superimposed on a portion of the metal base; a substrate arranged on the metal base; an antenna connected to the substrate; and a fixing portion which fixes the metal base and the substrate, wherein the fixing portion is positioned at a top-view superimposed area of the metal base and the metal plate.

Abstract: An antenna device for vehicle that is attached to a roof of a vehicle, the antenna device for vehicle including: an antenna base; an antenna case covering the antenna base from above; and an antenna element provided inside the antenna case, wherein the antenna base has a metal base fixed to the roof, and a metal plate electrically connected to the metal base.

Abstract: One aspect of the present invention is a nonaqueous electrolyte energy storage device including: a positive electrode; and a negative electrode containing silicon oxide, wherein an initial irreversible capacity of the positive electrode to an initial irreversible capacity of the negative electrode is 1.15 or more.

Abstract: A patch antenna is provided with an antenna main body including a radiating element on an upper surface of a dielectric body; and a parasitic element disposed at a predetermined distance from the radiating element. The parasitic element is a metal material having an upward convex shape as a whole and including a planar portion which is parallel to the upper surface of the radiating element and two bent portions which are inclined portions inclined from both ends of the planar portion toward the radiating element. While the parasitic element has a three-dimensional shape as a whole, the parasitic element has a planar-view area wider than a planar-view area of the radiating element in a planar view as seen from the first surface side of the dielectric body, and is provided in a position apart from the radiating element and to cover the radiating element.

Abstract: An antenna device for vehicle that is attached to a roof of a vehicle, the antenna device for vehicle including: an antenna base; an antenna case covering the antenna base from above; and an antenna element provided inside the antenna case, wherein the antenna base has a metal base fixed to the roof, and a metal plate electrically connected to the metal base.

Abstract: An air discharge device includes a duct that defines a flow passage through which a working air flow to be discharged passes, and a hole forming member defining an air discharge hole as an outlet of the working air flow. The hole forming member has a vortex generation structure configured to generate an auxiliary vortex having a vortex characteristic including a vortex rotation direction and a vortex axis direction. The vortex characteristic of the auxiliary vortex is different from that of a lateral vortex generated by the working air flow at a downstream side of the air discharge hole. The vortex generation structure is configured in the hole forming member so that the auxiliary vortex collides with the lateral vortex in a state where at least one of the vortex rotation direction and the vortex axial direction of the vortex characteristic is different from that of the lateral vortex.

Abstract: A base fluid for heat medium contains a hydrophilic ionic liquid and water. A molecular weight of the hydrophilic ionic liquid is at or below 150. The hydrophilic ionic liquid is methylammonium nitrate. Since the ionic liquid has favorable thermal stability, the thermal stability of the base fluid for heat medium can be secured. Since the molecular weight of the hydrophilic ionic liquid is at or below 150, the base fluid for heat medium has a low kinematic viscosity. Further, since the freezing point depression effect can be obtained by dissolving the ionic liquid in water, a low freezing point can be realized.