Abstract: Provided is a reactor including a coil having a pair of winding portions; and a ring-shaped magnetic core, the magnetic core including: a pair of inner core portions arranged inside of the winding portions; and a pair of outer core portions respectively arranged outside of one end and outside of another end in an axial direction of the winding portions, the reactor including a non-magnetic reinforcing member that is arranged between the pair of winding portions and is coupled to the inner end surfaces of the pair of outer core portions. An axial rigidity of the reinforcing member is 2×107 N/m or more. Here, the axial rigidity is a value obtained by multiplying the cross-sectional area of the reinforcing member perpendicular to the axial direction of the winding portions and the Young's modulus of the reinforcing member, and dividing the result by the length of the reinforcing member.

Abstract: Provided is a reactor including a coil having a pair of winding portions; and a ring-shaped magnetic core, the magnetic core including: a pair of inner core portions arranged inside of the winding portions; and a pair of outer core portions respectively arranged outside of one end and outside of another end in an axial direction of the winding portions, the reactor including a non-magnetic reinforcing member that is arranged between the pair of winding portions and is coupled to the inner end surfaces of the pair of outer core portions. An axial rigidity of the reinforcing member is 2×107 N/m or more. Here, the axial rigidity is a value obtained by multiplying the cross-sectional area of the reinforcing member perpendicular to the axial direction of the winding portions and the Young's modulus of the reinforcing member, and dividing the result by the length of the reinforcing member.

Abstract: Provided is a reactor including a coil having a wound portion, and a magnetic core having an inner core portion arranged inside the wound portion and an outer core portion arranged outside the wound portion. The bottom surface portion, which is to be located on an installation side when the reactor is installed, of the outer core portion protrudes below the bottom surface of the inner core portion, the top surface portion on a side opposite to the bottom surface portion of the outer core portion protrudes above the top surface of the inner core portion, and the respective protrusion amounts are 20% or less of the height in a vertical direction of the inner core portion. The outer core portion has a shape that is symmetrical with respect to a center line that divides the inner core portion into an upper portion and a lower portion.

Abstract: A silicon carbide epitaxial substrate includes a silicon carbide single crystal substrate and a silicon carbide layer. The silicon carbide single crystal substrate has a first main surface. The silicon carbide layer is on the first main surface. The silicon carbide layer includes a second main surface opposite to a surface thereof in contact with the silicon carbide single crystal substrate. The second main surface has a maximum diameter of more than or equal to 100 mm. The second main surface includes an outer peripheral region which is within 3 mm from an outer edge of the second main surface, and a central region surrounded by the outer peripheral region. The central region has a haze of less than or equal to 75 ppm.

Abstract: Provided are a bipolar plate that can decrease the internal resistance of a flow battery, a redox flow battery, and a method for producing a bipolar plate. A bipolar plate sandwiched between a positive electrode in which a positive electrode electrolyte flows and a negative electrode in which a negative electrode electrolyte flows includes a positive-electrode-side surface in which a flow channel having a plurality of grooves through which the positive electrode electrolyte flows is provided and a negative-electrode-side surface in which a flow channel having a plurality of grooves through which the negative electrode electrolyte flows is provided.

Abstract: A silicon carbide epitaxial substrate includes a silicon carbide single crystal substrate and a silicon carbide layer. The silicon carbide single crystal substrate has a first main surface. The silicon carbide layer is on the first main surface. The silicon carbide layer includes a second main surface opposite to a surface thereof in contact with the silicon carbide single crystal substrate. The second main surface has a maximum diameter of more than or equal to 100 mm. The second main surface includes an outer peripheral region which is within 3 mm from an outer edge of the second main surface, and a central region surrounded by the outer peripheral region. The central region has a haze of less than or equal to 75 ppm.

Abstract: A redox flow battery having reduced internal resistance is provided. The redox flow battery includes a membrane, a bipolar plate, an electrode disposed between the membrane and the bipolar plate, an inlet port for supplying an electrolyte to the electrode, and an outlet port for discharging the electrolyte from the electrode, and performs a charge-discharge reaction by allowing the electrolyte to flow in the electrode. The electrode includes an anisotropic electrode layer having different permeabilities between a direction A1 on a plane of the electrode and a direction A2 orthogonal to the direction A1 on the plane of the electrode. In the anisotropic electrode layer, a permeability K1 in the direction A1 is larger than a permeability K2 in the direction A2.

Abstract: Provided are a bipolar plate that can decrease the internal resistance of a flow battery, a redox flow battery, and a method for producing a bipolar plate. A bipolar plate sandwiched between a positive electrode in which a positive electrode electrolyte flows and a negative electrode in which a negative electrode electrolyte flows includes a positive-electrode-side surface in which a flow channel having a plurality of grooves through which the positive electrode electrolyte flows is provided and a negative-electrode-side surface in which a flow channel having a plurality of grooves through which the negative electrode electrolyte flows is provided.

Abstract: A redox flow battery having reduced internal resistance is provided. The redox flow battery includes a membrane, a bipolar plate, an electrode disposed between the membrane and the bipolar plate, an inlet port for supplying an electrolyte to the electrode, and an outlet port for discharging the electrolyte from the electrode, and performs a charge-discharge reaction by allowing the electrolyte to flow in the electrode. The electrode includes an anisotropic electrode layer having different permeabilities between a direction A1 on a plane of the electrode and a direction A2 orthogonal to the direction A1 on the plane of the electrode. In the anisotropic electrode layer, a permeability K1 in the direction A1 is larger than a permeability K2 in the direction A2.

Abstract: Substrates are mounted on a plurality of susceptors respectively. The plurality of susceptors on which respective substrates are mounted are placed on a rotational mechanism so that the susceptors are vertically spaced at a predetermined interval. The rotational mechanism on which the plurality of susceptors are placed is rotated. The plurality of susceptors on which the substrates are mounted respectively are heated. Semiconductor thin-films are deposited by supplying a source gas to each of the susceptors that are heated while being rotated, the source gas having been heated while passing through gas flow paths of respective path lengths substantially equal to each other.