Abstract: A water treatment device includes: a water electrolyzer configured to produce oxygen gas by electrolyzing water; a pressurization mechanism pressurizing raw water by being supplied with the oxygen gas produced in the water electrolyzer; and a processor to which the raw water pressurized by the pressurization mechanism is supplied, the processor including a reverse osmosis membrane.

Abstract: According to one embodiment, an electrolytic cell includes: a housing for retaining an electrolytic solution; a diaphragm that partitions an interior of the housing into an anode-side cell and a cathode-side cell; an anode electrode that is provided in the anode-side cell and has most of a surface in contact with an anode-side gas phase; and a cathode electrode that is provided in the cathode-side cell and has most of a surface in contact with a cathode-side gas phase. According to the other embodiment, a hydrogen production apparatus according to the present embodiment includes: an electrolytic solution tank that retains an electrolytic solution; and a pump that supplies the electrolytic solution between the anode electrode and the cathode electrode from the electrolytic solution tank.

Abstract: An electrolytic device includes a first electrode, a second electrode, and a diaphragm provided between the first electrode and the second electrode. A first flow channel is formed inside the first electrode and discharges a first raw material in liquid form toward the diaphragm.

Abstract: An electrolytic device includes a first electrode, a second electrode, and a diaphragm provided between the first electrode and the second electrode. A first flow channel is formed inside the first electrode and discharges a first raw material in liquid form toward the diaphragm.

Abstract: A water treatment device includes: a water electrolyzer configured to produce oxygen gas by electrolyzing water; a pressurization mechanism pressurizing raw water by being supplied with the oxygen gas produced in the water electrolyzer; and a processor to which the raw water pressurized by the pressurization mechanism is supplied, the processor including a reverse osmosis membrane.

Abstract: According to one embodiment, an electrolytic cell includes: a housing for retaining an electrolytic solution; a diaphragm that partitions an interior of the housing into an anode-side cell and a cathode-side cell; an anode electrode that is provided in the anode-side cell and has most of a surface in contact with an anode-side gas phase; and a cathode electrode that is provided in the cathode-side cell and has most of a surface in contact with a cathode-side gas phase. According to the other embodiment, a hydrogen production apparatus according to the present embodiment includes: an electrolytic solution tank that retains an electrolytic solution; and a pump that supplies the electrolytic solution between the anode electrode and the cathode electrode from the electrolytic solution tank.

Abstract: An electrolytic cell includes a housing, a first diaphragm, a first electrode, a second electrode, and a first discharge port. The housing held an electrolyte solution. The first diaphragm partitions the interior of the housing into a first cell and a second cell. The first electrode is provided inside the first cell. The first electrode includes a first surface facing the first diaphragm, a second surface different from the first surface, and a first hole. The second electrode is provided inside the second cell adjacent to the first diaphragm. The second electrode includes a third surface adjacent to the first diaphragm, a fourth surface different from the third surface, and a second hole. The first discharge port discharges the electrolyte solution from the second cell. The first cell is configured to supply the electrolyte solution supplied therein to the third surface side of the second cell.

Abstract: An electrolytic cell includes a housing, a first diaphragm, a first electrode, a second electrode, and a first discharge port. The housing held an electrolyte solution. The first diaphragm partitions the interior of the housing into a first cell and a second cell. The first electrode is provided inside the first cell. The first electrode includes a first surface facing the first diaphragm, a second surface different from the first surface, and a first hole. The second electrode is provided inside the second cell adjacent to the first diaphragm. The second electrode includes a third surface adjacent to the first diaphragm, a fourth surface different from the third surface, and a second hole. The first discharge port discharges the electrolyte solution from the second cell. The first cell is configured to supply the electrolyte solution supplied therein to the third surface side of the second cell.

Abstract: According to one embodiment, a transparent conductive material is used for a transparent conductive film. The transparent conductive material includes nanographene having a polar group at a surface of the nanographene.