Abstract: Provided are: an alloy member that is excellent in homogeneity of both the alloy composition and microstructure and excellent in shape controllability and includes a high entropy alloy having high mechanical properties and high corrosion resistance, a process for producing the same, and a product including the alloy member. In the present invention, the alloy member having a chemical composition comprising elements of Co, Cr, Fe, Ni, and Ti each in an amount within a range of 5 atomic % or more and 35 atomic % or less and Mo in an amount within a range of more than 0 atomic % and 8 atomic % or less, the reminder consisting of unavoidable impurities, wherein ultrafine grains having an average grain diameter of 100 nm or less are dispersed and precipitated in a parent phase crystal.

Abstract: Provided are: an alloy member that is excellent in homogeneity of both the alloy composition and microstructure and excellent in shape controllability and includes a high entropy alloy having high mechanical properties and high corrosion resistance, a process for producing the same, and a product including the alloy member. In the present invention, the alloy member having a chemical composition comprising elements of Co, Cr, Fe, Ni, and Ti each in an amount within a range of 5 atomic % or more and 35 atomic % or less and Mo in an amount within a range of more than 0 atomic % and 8 atomic % or less, the reminder consisting of unavoidable impurities, wherein ultrafine grains having an average grain diameter of 100 nm or less are dispersed and precipitated in a parent phase crystal.

Abstract: It is provided a computer system, comprising a plurality of computers configured to execute processing in response to requests received from a plurality of external systems. The plurality of computers share an acceptance weight statistic value calculated by each of the plurality of computers with another computer within the same network segment. The processor of each of the plurality of computers is configured to: receive a broadcast transmitted from one of the plurality of external systems to the same network segment; determine whether to respond to the received broadcast by referring to the shared acceptance weight statistic value; and send a response to the one of the plurality of external systems that has transmitted the broadcast in order to allow the one of the plurality of external systems to transmit a processing request in a case where it is determined to respond to the received broadcast.

Abstract: A solid polymer electrolyte membrane is provided that is inexpensive, and is excellent in the ionic conductivity characteristics, the methanol crossover characteristics and the mechanical characteristics. The solid polymer electrolyte membrane contains a block copolymer A containing a hydrophilic segment having an ion exchange group and a hydrophobic segment, and a block copolymer B containing a hydrophilic segment having an ion exchange group and a hydrophobic segment and having a smaller ion exchange capacity than the block copolymer A, and has a structure where a region A having the block copolymer A agglomerated therein is dispersed in a matrix constituted by a region B having the block copolymer B agglomerated therein, with a microscopic phase-separated structure having a period of from 10 to 100 nm being formed in the region A and the region B.

Abstract: Disclosed is a fuel cell in which a membrane electrode assembly less undergoes increase in ion conduction resistance, and a polymer electrolyte membrane less undergoes deterioration. Specifically, the polymer electrolyte membrane includes a first membrane and a second membrane being two different membranes composed of polymer electrolytes having different ion-exchange capacities, in which the first membrane has an area of one surface thereof equal to or larger than an area of one surface of an anode or a cathode, and the second membrane has an area of one surface thereof smaller than that of the first membrane and is arranged in a gas inflow region on a side being in contact with the cathode. The second membrane has an ion-exchange capacity smaller than that of the first membrane or has a number-average molecular weight larger than that of the first membrane.

Abstract: A fuel battery system of the present invention includes: an alkaline fuel battery; a fuel supply device for supplying a fuel to an anode of the fuel battery; an oxidizing agent supply device for supplying an oxidizing agent to a cathode of the fuel battery; a liquid supply device which supplies a liquid to the cathode; a valve which switches between fluids to be supplied to the cathode; and a control device which controls the switching of the valve. The fuel battery system suppresses the neutralization of an anion-exchange electrolyte due to carbon dioxide in the air, by supplying the liquid from the liquid supply device to the cathode and making the cathode in the state of being immersed in the liquid when the fuel battery stops power generation.

Abstract: Disclosed is an electrolyte material containing a copolymer including a polyvinyl as a main chain, the copolymer including a functional group with proton conductivity; and an alkoxide of Si or Ti as a side chain. By using the electrolyte material, a proton conductive polymer electrolyte membrane with flexibility, high ion conductivity, excellent water resistance, and a small change in size can be obtained. And a polymer electrolyte fuel cell can be provided which has high output and durability by using the electrolyte membrane.

Abstract: A membrane electrode assembly for a fuel cell comprises a solid polymer electrolyte membrane, an anode being formed on one side of the solid polymer electrolyte membrane and containing a catalyst and a solid polymer electrolyte, a cathode being formed on another side of the solid polymer electrolyte membrane and containing a catalyst and a solid polymer electrolyte, an anode gas diffusion layer formed on one side of the anode, and a cathode gas diffusion layer formed on one side of the cathode. In addition, a formic acid oxidation electrode containing palladium and a solid polymer electrolyte is formed between the anode gas diffusion layer and the anode.

Abstract: Disclosed is a fuel cell in which a membrane electrode assembly less undergoes increase in ion conduction resistance, and a polymer electrolyte membrane less undergoes deterioration. Specifically, the polymer electrolyte membrane includes a first membrane and a second membrane being two different membranes composed of polymer electrolytes having different ion-exchange capacities, in which the first membrane has an area of one surface thereof equal to or larger than an area of one surface of an anode or a cathode, and the second membrane has an area of one surface thereof smaller than that of the first membrane and is arranged in a gas inflow region on a side being in contact with the cathode. The second membrane has an ion-exchange capacity smaller than that of the first membrane or has a number-average molecular weight larger than that of the first membrane.

Abstract: There is used a polymer electrolyte membrane containing a polymer segment (A) having an ion-conducting component, and a polymer segment (B) having a composition ratio of the ion-conducting component lower than that in the polymer segment (A), wherein the polymer segment (A) and the polymer segment (B) form a micro phase-separated structure, and inorganic particles 8 (a metal oxide, the metal oxide supporting a sulfuric acid ion, a metal hydroxide, the metal hydroxide supporting a sulfuric acid ion, a metal salt of phosphoric acid, and a metal fluoride or carbon) are present in a hydrophilic domain 9 composed of the polymer segment (A), in higher concentration than that in a hydrophobic domain 10 composed of the polymer segment (B).

Abstract: In a membrane-electrode assembly comprising an anode, a cathode and a polymer electrolyte membrane and having a constitution in which the polymer electrolyte membrane is interleaved between the anode and the cathode, an agglomerate structure of carbon support formed with a plurality of carbon primary particles supporting catalyst particles is contained in the anode and the cathode, and particulate media having polymer electrolyte on the surface thereof are contained between adjacent agglomerate structures of carbon supports.

Abstract: A polymer electrolyte for a fuel cell is provided at low cost which has excellent mechanical characteristics, resistance to oxidation and high ion conductivity, and which hardly swells. The polymer electrolyte includes a block copolymer containing a hydrophilic segment and a hydrophobic segment. The hydrophilic segment contains a structural unit represented by the following chemical formula (1).

Abstract: It is the objective to provide an electrolyte membrane with low cost, high ion conductivity, and low swelling. It is comprised of a hydrophilic segment containing a sulfonic acid group and a hydrophobic segment where a sulfonic acid group is not contained, and it uses a polymer electrolyte for a fuel cell containing a block copolymer where the relationship between the glass-transition temperature of the hydrophobic segment (Tg1) and the glass-transition temperature of the hydrophilic segment (Tg2) is Tg1>Tg2.

Abstract: Disclosed is an electrolyte membrane which is slowly degraded by a peroxide occurring at an air electrode catalyst layer, is low in cost, and is long in life, and a membrane electrode assembly. The electrolyte membrane has a first electrolyte layer which has an ion conductivity, a second electrolyte layer which has an ion conductivity, and, upon surface contact with methanol, is thicker than the first electrolyte layer, has a larger ion exchange equivalent, or a larger number average molecular weight, and a porous layer which has an ion conductive electrolyte impregnated therein, formed between the first electrode layer and the second electrode layer.