Abstract: Provided is a lithium secondary battery having a higher capacity and a longer life. The lithium secondary battery includes: a positive electrode including a material capable of intercalation and deintercalation of a lithium ion; a lithium ion-conductive electrolyte including a salen-based metal complex; and a negative electrode including a material capable of occlusion and release of a lithium metal or a lithium ion. The salen-based metal complex is selected from (R,R)-(?)-N,N?-bis(3,5-di-tert-butylsalicylidene)-1,2-cyclohexanediaminotitanium chloride (TiSl), VSl, CrSl, MnSl, FeSl, CoSl, and RuSl.

Abstract: There is provided an air battery including a first housings accommodating a base cell including a negative electrode, a positive electrode, and a separator disposed between the negative electrode and the positive electrode, and a second housing containing an electrolyte solution or water, in which the first housing and the negative electrode each have a hole leading to the separator, the second housing has a hole that is capable of being sealed, and the first housing and the second housing are disposed to face the hole of the first housing and the hole of the second housing each other.

Abstract: A battery includes a cathode (101), an anode (102), and an electrolyte (103). The cathode (101) is made of a bicontinuous body having a three-dimensional network structure including a plurality of nanostructures. The electrolyte (103) is sandwiched between the cathode (101) and the anode (102) and made of a salt. The electrolyte (103) may be made of, e.g., an aqueous solution of one of potassium chloride and sodium chloride, or a mixture thereof. The anode (102) may contain, e.g., a metal selected from magnesium, zin, iron, and aluminum.

Abstract: A semiconductor device includes a semiconductor layer, which is disposed on the surface of a substrate and causing an oxidation reaction and a reduction reaction when irradiated with light, an oxidation catalyst layer, which is disposed on part of the surface of the semiconductor layer, forms along with the semiconductor layer a Schottky junction, and oxidizes an oxidation target substance, a reduction catalyst layer, which is disposed on part of the surface of the semiconductor layer where the oxidation catalyst layer is not disposed so as to be separated from the oxidation catalyst layer, forms along with the semiconductor layer an ohmic junction, and reduces a reduction target substance, and an insulation layer, which is disposed on the entirety of the surface of the semiconductor layer where none of the oxidation catalyst layer and the reduction catalyst layer is disposed so as to be in contact with the oxidation catalyst layer and the reduction catalyst layer.

Abstract: The nitride semiconductor photocatalytic thin film of the present embodiment is a nitride semiconductor photocatalytic thin film that exhibits a catalytic function to cause a redox reaction by light irradiation. The nitride semiconductor photocatalytic thin film includes: a conductive substrate; a semiconductor thin film disposed on a surface of the conductive substrate; a first catalyst layer that forms an ohmic junction on a portion of a surface of the semiconductor thin film; a second catalyst layer that forms a Schottky junction on a portion of the surface of the semiconductor thin film, and a protective layer disposed to cover a back surface of the conductive substrate and side surfaces of the conductive substrate and the semiconductor thin film. The substrate and the semiconductor thin film include a same element and have a same crystal structure.

Abstract: A lithium ion secondary battery has, as a positive electrode active material into and from which lithium ions can be intercalated and deintercalated, a lithium oxide represented by Formula Li(1+y)CoPO4X(y) (in the formula, X is selected from the group consisting of F, Cl, Br and I, and y lies in the range of 1<y?2).

Abstract: A gas phase reduction apparatus of carbon dioxide includes an oxidation chamber that includes an oxidation electrode; a reduction chamber that is adjacent to the oxidation chamber and receives supplied carbon dioxide; and a porous electrode-supporting electrolyte membrane that is placed between the oxidation chamber and the reduction chamber. The porous electrode-supporting electrolyte membrane is a joined body including a porous reduction electrode joined to an electrolyte membrane. The electrolyte membrane is placed on the oxidation chamber side. The porous reduction electrode is placed on the reduction chamber side and configured to reduce the carbon dioxide by electrons from the oxidation electrode connected via a conductor.

Abstract: A semiconductor photoelectrode that is to be located in an aqueous solution to cause a decomposition reaction of the aqueous solution upon being irradiated with light, the semiconductor photoelectrode including: a semiconductor layer that is formed on an insulative or conductive substrate and is provided with a plurality of protrusion structures that protrude in one direction that is opposite a direction in which the substrate is located; a catalyst layer that is continuously laminated on the surface of the semiconductor layer; and a wire that is electrically connected to the semiconductor layer.

Abstract: The sheet mask includes multiple battery parts arranged such that electric currents flow along mimic muscles or flows of lymph. This allows an active ingredient to penetrate into in-body tissues more effectively and also allows the mimic muscles and the lymphatic vessels to be electrically stimulated. Forming the battery parts by using materials with low environmental load allows easy disposal of the sheet mask in everyday life.

Abstract: A gas-phase reduction device for carbon dioxide includes: an oxidation chamber containing an oxidation electrode; a reduction chamber to which carbon dioxide is supplied; a gas reduction sheet that has an ion exchange membrane and a reduction electrode laminated together therein and that is disposed between the oxidation chamber and the reduction chamber with the ion exchange membrane facing the oxidation chamber and the reduction electrode facing the reduction chamber; a conducting wire that connects the oxidation electrode and the reduction electrode; and a heat source that surrounds the reduction chamber.

Abstract: To improve the efficiency of a reduction reaction. A power source applies a voltage to an oxidation electrode immersed in an aqueous solution in an oxidation tank and a reduction electrode immersed in an aqueous solution in a reduction tank, the voltage having a voltage value that changes with a predetermined cycle to be a voltage value at which ions can be desorbed from a surface of the oxidation electrode and a surface of the reduction electrode during one cycle of the voltage change. The frequency of the voltage is set within a range of 10 Hz to 1 kHz.

Abstract: A carbon dioxide gas phase reduction device includes an oxidation tank including an oxidation electrode, a reduction tank to which carbon dioxide is supplied, an intermediate tank that is disposed between the oxidation tank and the reduction tank and capable of pouring and discharging an electrolytic solution, an ion exchange membrane disposed between the oxidation tank and the intermediate tank, a gas reduction sheet in which an ion exchange membrane and a reduction electrode are laminated and which is disposed between the reduction tank and the intermediate tank with the ion exchange membrane facing the intermediate tank and the reduction electrode facing the reduction tank, and a conducting wire connecting the oxidation electrode to the reduction electrode.

Abstract: A method for producing a nitride semiconductor photoelectrode includes: a first step of forming an n-type gallium nitride layer on an electrically insulative or conductive substrate; a second step of forming an indium gallium nitride layer on the n-type gallium nitride layer; a third step of forming a p-type nickel oxide layer on the indium gallium nitride layer; and a fourth step of subjecting a nitride semiconductor in which the p-type nickel oxide layer has been formed to heat treatment.

Abstract: There is provided an air battery including a first housings accommodating a base cell including a negative electrode, a positive electrode, and a separator disposed between the negative electrode and the positive electrode, and a second housing containing an electrolyte solution or water, in which the first housing and the negative electrode each have a hole leading to the separator, the second housing has a hole that is capable of being sealed, and the first housing and the second housing are disposed to face the hole of the first housing and the hole of the second housing each other.

Abstract: To improve design of a lighting device. A lighting device includes optically transparent glass plates provided on side faces and placed on an optical path of light emitted from a light source, where some or all of the optically transparent glass plates contain an optically transparent battery adapted to drive the light source; and an optically transparent glass plate that contains a transparent conductive film by being provided on a bottom face, wherein the optically transparent battery is placed in contact with a pair of transparent conductive film layers, which are connected to the light source. The pair of transparent conductive film layers are formed in a pair of parallel linear grooves formed in a surface of the optically transparent glass plate on the bottom face, and a tabular positive tab and negative tab of the optically transparent battery fit in respective ones of the pair of grooves.

Abstract: Provided are an easy-to-handle primary battery capable of spontaneous power generation and a moisture sensor including the same. The primary battery includes a separator that is disposed between a negative electrode and negative electrode current collector (a negative electrode) and a positive electrode and positive electrode current collector (a positive electrode), and sucks up electrolyte solution by the capillary phenomenon with an exposed portion of the separator 5 exposed from battery casings.

Abstract: A hydrogen generation device capable of generating hydrogen using an inexpensive material is provided. The hydrogen generation device includes: a water flow path unit through which a solution flows in from outside and exits; a hydrogen generation unit made of a metal, the hydrogen generation unit generating hydrogen by a reaction with the flowing-in solution; and a hydrogen collection unit for collecting the generated hydrogen, wherein the hydrogen generation unit is disposed so that friction with the flowing-in solution peels off a surface film of the metal to expose an active surface of the metal, the metal being the hydrogen generation unit itself.

Abstract: Provided is a semiconductor photoelectrode which maintains a light energy conversion efficiency for a long time. In the semiconductor photoelectrode, using a conductive substrate including a III-V group compound semiconductor, a semiconductor thin film including a III-V group compound semiconductor having a photocatalytic function is disposed on the substrate, and an oxygen generation co-catalyst layer having an oxygen generation co-catalytic function for the semiconductor thin film is disposed on the semiconductor thin film. Between the semiconductor thin film and the oxygen generation co-catalyst layer, a semiconductor thin film including a III-V group compound semiconductor having a lattice constant smaller than that of the semiconductor thin film in a plane perpendicular to a crystal growth direction is disposed.

Abstract: Provided is a method for producing a nitride semiconductor photoelectrode capable of improving the light energy conversion efficiency. The method for producing a nitride semiconductor photoelectrode includes a first step of forming an n-type gallium nitride layer on an insulating or conductive substrate, a second step of forming an indium gallium nitride layer on the n-type gallium nitride layer, a third step of forming a nickel layer n the indium gallium nitride layer, and a fourth step of heat-treating the nickel layer in an oxygen atmosphere.

Abstract: A lithium secondary battery is provided with a higher capacity and a longer life. The lithium secondary battery includes: a cathode containing a material that is capable of inserting and desorbing lithium ions; a lithium ion conductive electrolyte; and an anode containing a material that is capable of occluding and releasing lithium metal or lithium ions, wherein the electrolyte contains indigo or indigo carmine, which is an organic compound.