摘要:
Provided is a microphase-separated structure membrane including a block copolymer in which a hydrophilic polymer component and a hydrophobic polymer component are coupled to each other via a structural unit having a reactive group, an electron acceptor or electron donor, or a dye. In the microphase-separated structure membrane, a cylinder structure composed of the hydrophilic polymer component lies in a matrix composed of the hydrophobic polymer component and is oriented in the direction perpendicular to the membrane surface, and the structural unit having a reactive group, an electron acceptor or electron donor, or a dye lies between the matrix and the cylinder structure.
摘要:
Fuel for a fuel cell includes a main fuel that includes at least hydrogen and carbon, and a fuel additive formed of a hydrogen-containing compound that has a redox potential lower than that of hydrogen. A fuel cell system includes an electrolyte, an anode arranged on one side of the electrolyte and a cathode arranged on the other side of the electrolyte, and a fuel supply source that supplies the main fuel and the fuel additive.
摘要:
Provided is a microphase-separated structure membrane including a block copolymer in which a hydrophilic polymer component and a hydrophobic polymer component are coupled to each other via a structural unit having a reactive group, an electron acceptor or electron donor, or a dye. In the microphase-separated structure membrane, a cylinder structure composed of the hydrophilic polymer component lies in a matrix composed of the hydrophobic polymer component and is oriented in the direction perpendicular to the membrane surface, and the structural unit having a reactive group, an electron acceptor or electron donor, or a dye lies between the matrix and the cylinder structure.
摘要:
The power generation performance of a fuel cell is improved by reducing a concentration overvoltage of an anode, without increasing the cost thereof. A fuel cell system is provided with a fuel cell that generates electricity by means of electrochemical reactions between a fuel containing liquefied ammonia and an oxidizing agent, a fuel supply unit that supplies the fuel to the fuel cell, an oxidizing agent supply unit that supplies the oxidizing agent to the fuel cell, a temperature measurement unit that measures the temperature of the fuel cell, and a control unit that controls the pressure of the fuel to be supplied from the fuel supply unit to the fuel cell in accordance with the temperature of the fuel cell.
摘要:
A catalyst for electrodes in solid-polymer fuel cells which comprises metal oxide particles themselves. The catalyst contains fine transition-metal oxide particles having, in the main phase, a perovskite structure represented by the general formula ABO3 (wherein A represents one or more elements selected among lanthanum, strontium, cerium, calcium, yttrium, erbium, praseodymium, neodymium, samarium, europium, silicon, magnesium, barium, niobium, lead, bismuth, and antimony; and B represents one or more elements selected among iron, cobalt, manganese, copper, titanium, chromium, nickel, and molybdenum), the fine oxide particles having lattice constants satisfying the following relationship (1): 1.402
摘要:
A fuel cell includes a diffusion layer formed in a sheet having a small thickness. The fuel cell is assembled with a tension imposed on the sheet in an in-plane direction of the sheet. The tension is imposed on the diffusion layer from a frame disposed outside the fuel cell. The tension is of such a magnitude as to prevent a portion of the sheet positioned corresponding to a gas passage of a separator from being deformed when the fuel cell is assembled and has a tightening force thereby applied thereto. The tension is adjustable according to a fuel cell operating condition. These structures can prevent a separator rib from pushing into a membrane, maintaining the gas passability of the diffusion layer well.
摘要:
A catalyst obtained by calcining a hydrazone metal complex in which at least one catalytic metal species is coordinated to a hydrazone compound represented by a General Formula (1) below, a hydrazone polymer compound including at least a structural unit derived from a hydrazone compound represented by the General Formula (1) below as a repeating unit, and a catalyst obtained by calcining a hydrazone polymer metal complex in which at least one catalytic metal species is coordinated to a hydrazone polymer compound including at least a structural unit derived from a hydrazone compound represented by the General Formula (1) below: wherein, Py represents a 2-pyridyl group, a 3-pyridyl group, or a 4-pyridyl group.
摘要:
A fuel cell system in which fuel gas and oxidizing gas are supplied to a fuel cell stack and power generation is performed by electrochemical reaction between the fuel gas and the oxidizing gas, and a control method thereof are provided. This fuel cell system includes a fuel gas supply manifold which is extended in a unit cell stacking direction and which distributes the fuel gas to a fuel gas passage; a switching device which is provided inside the fuel gas supply manifold, and which switches between permission and prohibition of distribution of the fuel gas to the fuel gas passage of each of the unit cells; a load disconnect device which disconnects an output terminal of the stack from a load; a short-circuit device which short-circuits a positive electrode and a negative electrode of the output terminal of the stack; and a control device which short-circuits the positive electrode and the negative electrode of the output terminal by the short-circuit device after distribution of the fuel gas to the fuel gas passage of each of the unit cells is prohibited by the switching device when the output terminal is disconnected from the load by the load disconnect device.
摘要:
Provided are a photocatalyst having higher activity for hydrogen production through water splitting and a photoelectrode comprising the photocatalyst. The photocatalyst for water splitting of the present invention comprises a Ga selenide, an Ag—Ga selenide, or both thereof.
摘要:
The invention provides a process for efficient synthesis of ammonia. The process includes a water-splitting step in which water is decomposed to obtain a first source gas comprising hydrogen and oxygen, a first oxygen removal step in which the oxygen contained in the first source gas is at least partially separated and removed by an oxygen separating membrane or hydrogen separating membrane to obtain a second source gas having a lower oxygen concentration than the first source gas, a second oxygen removal step in which the oxygen in the second source gas is reacted with hydrogen to produce water for removal, or is adsorbed onto an adsorption medium for removal, to obtain a third source gas having a lower oxygen concentration than the second source gas, and an ammonia synthesis step in which the hydrogen in the third source gas is reacted with nitrogen to synthesize ammonia.