Abstract: According to one aspect of the present invention, an organic fluorine compound is represented by a general formula (R-?-E-CH2)2-A??(1A) (where A is a divalent perfluoropolyether group, ? is an arylene group or a single bond, R is an alkenyl group or an alkynyl group, and E is an ether bond or an ester bond or a group that is represented by a chemical formula —O—CH2CH(OH)CH2O— two groups each of which is represented by a general formula R-?-E-CH2— may be the same or different, and at least one n among two ? is an arylene group).

Abstract: According to one aspect of the present invention, an organic fluorine compound is represented by a general formula (R-?-E-CH2-A-CH2-E?)n-??-G??(1B) (where n is an integer of 2 to 5, A is a divalent perfluoropolyether group, ? is an arylene group or a single bond, R is an alkenyl group or an alkynyl group, and E and E? are each independently an ether bond or an ester bond or a group that is represented by a chemical formula —O—CH2CH(OH)CH2O— ?? is a group in which n+1 hydrogen atoms are separated from benzene, G is an organic group containing a fullerene skeleton, the n number of groups each of which is represented by a general formula R-?-E-CH2-A-CH2-E?- may be the same or different, and at least one ? among the n number of ? is an arylene group).

Abstract: A redox flow battery includes: first carbon nanotubes having an average diameter of 100 nm or r core, and second carbon nanotubes having an average diameter of 30 nm or less, in which the second carbon nanotubes are adhered to surfaces of the first carbon nanotubes such that the second carbon nanotubes bridge between the plural first carbon nanotubes. Since the redox flow battery includes an electrode material and an electrode including the electrode material, the electromotive force and the charging capacity are high.

Abstract: This collector plate includes a peripheral edge wall that surrounds a predetermined region, and is provided on at least one surface of the collector plate, in which a surface roughness (Ra) of a first surface which is an exposed surface of the peripheral edge wall on the side of one surface, which is measured along a direction perpendicular to an extension direction of the peripheral edge wall is greater than a surface roughness (Ra) of the first surface which is measured along the extension direction of the peripheral edge wall.

Abstract: A redox flow electrode according to one aspect of the present invention is a redox flow battery electrode disposed between an ion exchange membrane and a bipolar plate, wherein the electrode includes a conductive sheet containing carbon nanotubes having an average fiber diameter of 1 ?m or less, and a porous sheet that is laminated to the conductive sheet and is formed from fibers having an average fiber diameter of greater than 1 ?m.

Abstract: A redox flow battery is provided, including an ion-exchange membrane, a current collector plate, and an electrode that is disposed between the ion-exchange membrane and the current collector plate. The electrode includes a main electrode layer in which an electrolytic solution flows from a surface on the current collector plate side to a surface on the ion-exchange membrane side, and the main electrode layer includes a plurality of main electrode pieces which are arranged in parallel in a plane direction.

Abstract: An electrode material including a conductive sheet containing carbon nanotubes having an average fiber diameter of 1 ?m or less; a liquid inflow member that is formed on a first surface of the conductive sheet such that an electrolyte solution that is passed therethrough flows into the conductive sheet; and a liquid outflow member that is formed on a second surface of the conductive sheet and out of which flows the electrolyte solution that has passed through the conductive sheet; wherein, when using a sheet surface of the conductive sheet as a reference plane, the Darcy permeability, in an in-plane direction, inside the liquid inflow member, is at least 100 times the Darcy permeability, in a normal direction, through the conductive sheet.

Abstract: According to one aspect of the present invention, an organic fluorine compound is represented by a general formula (R-?-E-CH2)2-A??(1A) (where A is a divalent perfluoropolyether group, ? is an arylene group or a single bond, R is an alkenyl group or an alkynyl group, and E is an ether bond or an ester bond or a group that is represented by a chemical formula —O—CH2CH(OH)CH2O— two groups each of which is represented by a general formula R-?-E-CH2— may be the same or different, and at least one n among two ? is an arylene group).

Abstract: According to one aspect of the present invention, an organic fluorine compound is represented by a general formula (R-?-E-CH2-A-CH2-E?)n-??-G??(1B) (where n is an integer of 2 to 5, A is a divalent perfluoropolyether group, ? is an arylene group or a single bond, R is an alkenyl group or an alkynyl group, and E and E? are each independently an ether bond or an ester bond or a group that is represented by a chemical formula —O—CH2CH(OH)CH2O— ?? is a group in which n+1 hydrogen atoms are separated from benzene, G is an organic group containing a fullerene skeleton, the n number of groups each of which is represented by a general formula R-?-E-CH2-A-CH2-E?- may be the same or different, and at least one ? among the n number of ? is an arylene group).

Abstract: This collector plate includes a plurality of flow paths through which an electrolyte is capable of flowing, and which are provided in at least one surface of the collector plate, in which a surface roughness (RaT) of a first surface of an internal wall regulated between the plurality of flow paths, which is measured along a width direction of the internal wall, is smaller than a surface roughness (Rat) of the first surface which is measured along a length direction of the internal wall.

Abstract: This collector plate includes a plurality of grooves through which an electrolyte is capable of flowing, and which are provided in at least one surface of the collector plate, in which a surface roughness (Ra) of an internal surface of each groove is smaller than a surface roughness (Ra) of a first surface connecting together the grooves.

Abstract: This collector plate includes a plurality of flow paths through which an electrolyte flows and which are provided in at least one surface of the collector plate, in which an arithmetic surface roughness (Ra) of a first surface, which is an exposed surface of a wall portion between the plurality of flow paths on the side of one surface, is greater than or equal to 1 ?m and less than or equal to 300 ?m.

Abstract: This collector plate includes a peripheral edge wall that surrounds a predetermined region, and is provided on at least one surface of the collector plate, in which a surface roughness (Ra) of a first surface which is an exposed surface of the peripheral edge wall on the side of one surface, which is measured along a direction perpendicular to an extension direction of the peripheral edge wall is greater than a surface roughness (Ra) of the first surface which is measured along the extension direction of the peripheral edge wall.

Abstract: This method for producing a vanadium compound has an alkaline leaching step for immersing incineration ash in an alkaline solution to cause vanadium to leach from the incineration ash into the alkaline solution and obtain a leachate slurry, a solid-liquid separation step for separating the leachate slurry obtained in the alkaline leaching step into a solid and liquid followed by removing insoluble matter to obtain a leachate, a pH adjustment step for adding acid to the leachate following solid-liquid separation to make the leachate acidic, an aging step for aging the leachate following pH adjustment until a precipitate forms in the leachate, and a separation step for separating the precipitate from the leachate following the aging step.

Abstract: A redox flow battery including: an ion-exchange membrane; a current collector plate; and an electrode disposed between the ion-exchange membrane and the current collector plate, wherein charging and discharging are performed by flowing of an electrolytic solution to the electrode. The electrode includes a first electrode part and a second electrode part in this order from the current collector plate side. The area of the second electrode part is larger than the area of the first electrode part and the second electrode part covers the whole of the first electrode part, when viewed from the ion-exchange membrane side. The current collector plate has a peripheral edge wall, which forms a housing region to which the first electrode part fits, on a surface of the electrode side. The second electrode part covers at least a part of a surface of the peripheral edge wall on the ion-exchange membrane side.

Abstract: The present invention provides a redox flow secondary battery including a positive electrode, a negative electrode facing the positive electrode, and an ion exchange membrane provided between the positive electrode and the negative electrode, at least one electrode of the positive electrode and the negative electrode has a metal protective film having an opening and a carbon electrode including carbon fibers in order from the ion exchange membrane side, and the height of the protruding peak portion of the surface of the metal protective film, which is in contact with the ion exchange membrane, is 0.1 to 2 ?m.

Abstract: An electrode material including a conductive sheet containing carbon nanotubes having an average fiber diameter of 1 ?m or less; a liquid inflow member that is formed on a first surface of the conductive sheet such that an electrolyte solution that is passed therethrough flows into the conductive sheet; and a liquid outflow member that is formed on a second surface of the conductive sheet and out of which flows the electrolyte solution that has passed through the conductive sheet; wherein, when using a sheet surface of the conductive sheet as a reference plane, the Darcy permeability, in an in-plane direction, inside the liquid inflow member, is at least 100 times the Darcy permeability, in a normal direction, through the conductive sheet.

Abstract: According to the present invention, there is provided a recording medium comprising a substrate, a platinum layer formed on the substrate and having a (111) plane preferentially oriented, and a fullerene single crystal thin film formed on the platinum layer, and configured to be a recording layer, wherein an average value of average surface roughness Ra's with respect to four or more visual fields measured by using an atomic force microscope in a surface of the fullerene thin film is 0.5 nm or less.

Abstract: A redox flow battery is provided, including an ion-exchange membrane, a current collector plate, and an electrode that is disposed between the ion-exchange membrane and the current collector plate. The electrode includes a main electrode layer in which an electrolytic solution flows from a surface on the current collector plate side to a surface on the ion-exchange membrane side, and the main electrode layer includes a plurality of main electrode pieces which are arranged in parallel in a plane direction.

Abstract: According to the present invention, there is provided a recording medium comprising a substrate, a platinum layer formed on the substrate and having a (111) plane preferentially oriented, and a fullerene single crystal thin film formed on the platinum layer, and configured to be a recording layer, wherein an average value of average surface roughness Ra's with respect to four or more visual fields measured by using an atomic force microscope in a surface of the fullerene thin film is 0.5 nm or less.