Abstract: The present invention implements an ion detector with which it is possible to avoid direct collisions of negative ions with a scintillator, prevent degradation of the scintillator, prolong life of the scintillator, reduce the need for maintenance, and perform highly sensitive detection of both positive and negative ions. With respect to a reference line 65 connecting a central point 63 of a positive ion CD 52 and a central point 64 of a counter electrode 54, a central point 66 of a negative ion CD 53 is provided in a region of a side opposite to a region of a side of a central point 67 of a scintillator 56. Positive ions entering from an ion entrance 62 receive a deflection force and collide with the positive ion CD 52 to generate secondary electrons. The generated secondary electrons collide with the scintillator 56 to generate light. The generated light passes through a light guide 59 and is detected by a photomultiplier tube 58. A negative potential barrier is generated along the reference line 65.

Abstract: Provided is an extracorporeal circulator capable of judging a timing suitable for detachment with high accuracy. The extracorporeal circulator includes a blood removal side catheter with a part that can be inserted into a patient and guide the blood taken from the patient; a pump that can take the blood from the patient and return the blood to the patient; a blood transfer side catheter provided downstream of the pump, and that has a part that can be inserted into the patient and guide the blood sent out from the pump back into the patient; a pump rotation speed detection unit that can detect a rotation speed of the pump; and a control system including at least one of an extracorporeal circulation management system that can judge stability of the extracorporeal circulation and a cardiac function measurement system that can judge stability of a heart function of the patient.

Abstract: There are provided a stock solution composition for fuel cell vehicle coolant used by dilution with a diluent comprising water and a method for producing the same, and further a fuel cell vehicle coolant composition having improved storage stability and a method for producing the same. The present invention relates to a method for producing a stock solution composition for fuel cell vehicle coolant, wherein the stock solution composition comprises at least one ethylene glycol compound selected from the group consisting of ethylene glycol, diethylene glycol, and triethylene glycol, and is used by dilution with a diluent comprising water, and the method comprises the following steps: (a) a step of selecting as a raw material an ethylene glycol compound having an ethylene glycol monoformate content of 60 ppm or less; or (b) a step of selecting as a raw material an ethylene glycol compound, wherein a 50% by mass aqueous solution of the ethylene glycol compound has a conductivity of 4.

Abstract: There are provided a stock solution composition for fuel cell vehicle coolant used by dilution with a diluent comprising water and a method for producing the same, and further a fuel cell vehicle coolant composition having improved storage stability and a method for producing the same. The present invention relates to a method for producing a stock solution composition for fuel cell vehicle coolant, wherein the stock solution composition comprises at least one ethylene glycol compound selected from the group consisting of ethylene glycol, diethylene glycol, and triethylene glycol, and is used by dilution with a diluent comprising water, and the method comprises the following steps: (a) a step of selecting as a raw material an ethylene glycol compound having an ethylene glycol monoformate content of 60 ppm or less; or (b) a step of selecting as a raw material an ethylene glycol compound, wherein a 50% by mass aqueous solution of the ethylene glycol compound has a conductivity of 4.

Abstract: The present invention specifies the physical property valves of a catalytic layer correlating with the performance of a fuel cell, and provides the catalytic layer having the physical proper values and a fuel cell. Specifically, in a fuel cell having a membrane-electrode assembly provided with a catalytic layer 13 on each side of an electrolyte membrane 10, an electrode powder constituting the catalytic layer 13 shall have an amount of adsorbed water vapor in a range of 52 to 70 cm3(STP)/g by a value measured when the water-vapor partial pressure is 0.6, which is determined from the adsorption isotherm of water. The fuel cell having the catalytic layer with the use of the electrode powder having the amount of adsorbed water vapor in this range has the output performance of 0.6 A/cm2 or higher by current density at 0.6 V, in a less humidified condition and a more humidified condition.

Abstract: A proton conducting polymer is described herein which generally comprises a proton donating polymer and a Lewis acid. The Lewis acids may comprise one or more rare earth triflates. The proton conducting polymer exhibits excellent proton conductivity in low humidity environments.

Abstract: A cationic conductive polymer is described herein which generally comprises a proton donating polymer and an oxocarbonic acid. The cationic conductive polymer exhibits a high conductivity in low humidity environments.

Abstract: A cationic conductive polymer is described herein which generally comprises a proton donating polymer and an oxocarbonic acid. The cationic conductive polymer exhibits a high conductivity in low humidity environments.

Abstract: A novel polymer electrolyte is provided that enables a solid polymer electrolyte used in fuel cells, for example, to have sufficient proton conductivity even in a low-water-content state or a zero-water-content state by using a monomer compound represented by the general formula (1), and a graft copolymer compound in which the monomer compound represented by the general formula (1) is graft-copolymerized to the main chain of a fluorine-containing hydrocarbon polymer. Tf indicates a trifluoromethane sulfonyl group (—SO2CF3).

Abstract: The present invention specifies the physical property valves of a catalytic layer correlating with the performance of a fuel cell, and provides the catalytic layer having the physical proper values and a fuel cell. Specifically, in a fuel cell having a membrane-electrode assembly provided with a catalytic layer 13 on each side of an electrolyte membrane 10, an electrode powder constituting the catalytic layer 13 shall have an amount of adsorbed water vapor in a range of 52 to 70 cm3(STP)/g by a value measured when the water-vapor partial pressure is 0.6, which is determined from the adsorption isotherm of water. The fuel cell having the catalytic layer with the use of the electrode powder having the amount of adsorbed water vapor in this range has the output performance of 0.6 A/cm2 or higher by current density at 0.6 V, in a less humidified condition and a more humidified condition.

Abstract: A cationic conductive polymer is described herein which generally comprises a proton donating polymer and an oxocarbonic acid. The cationic conductive polymer exhibits a high conductivity in low humidity environments.

Abstract: A proton conducting polymer is described herein which generally comprises a proton donating polymer and a Lewis acid. The Lewis acids may comprise one or more rare earth triflates. The proton conducting polymer exhibits excellent proton conductivity in low humidity environments.

Abstract: An electrode for a solid polymer fuel cell, capable of enhancing the power generation efficiency without increasing the amount of catalyst carried on the carbon particles, is provided. Catalyst carrier particles having a catalyst substance 10 carried on the surface of electron conductive particles 1, and a polymer electrolyte containing catalyst having a catalyst substance 20 dispersed in an ion conductive polymer 2 coexist.

Abstract: A novel polymer electrolyte is provided that enables a solid polymer electrolyte used in fuel cells, for example, to have sufficient proton conductivity even in a low-water-content state or a zero-water-content state by using a monomer compound represented by the general formula (1), and a graft copolymer compound in which the monomer compound represented by the general formula (1) is graft-copolymerized to the main chain of a fluorine-containing hydrocarbon polymer. Tf indicates a trifluoromethane sulfonyl group (—SO2CF3).

Abstract: In an electrode for polymer electrolyte fuel cells comprising electron conducting particles carrying platinum and an ion conducting polymer, platinum particles formed by a microemulsion method are added in a range of from 5 to 20% of the total amount of platinum in the electrode. A manufacturing method therefor is also provided.

Abstract: In an electrode for polymer electrolyte fuel cells comprising electron conducting particles carrying platinum and an ion conducting polymer, platinum particles formed by a microemulsion method are added in a range of from 5 to 20% of the total amount of platinum in the electrode. A manufacturing method therefor is also provided.

Abstract: An electrode for solid polymer fuel cells is capable of generating electric power at high output and high efficiency, without increasing the consumption of catalyst substance. By measurement of X-ray diffraction of catalyst substance of the electrode surface, the ratio I (111)/I (200) of peak intensity I (111) of (111) plane and peak intensity I (200) of (200) plane is 1.7 or less.

Abstract: An electrode for a solid polymer fuel cell, capable of enhancing the power generation efficiency without increasing the amount of catalyst carried on the carbon particles, is provided. Catalyst carrier particles having a catalyst substance 10 carried on the surface of electron conductive particles 1, and a polymer electrolyte containing catalyst having a catalyst substance 20 dispersed in an ion conductive polymer 2 coexist.

Abstract: The membrane electrode assembly comprising a pair of opposing electrodes each having a catalytic layer, and a polymer electrolyte membrane sandwiched by the electrodes, part of the catalytic layers being projecting into the polymer electrolyte membrane is produced by (1) coating a catalytic layer of one electrode with a solution of a polymer electrolyte in an organic solvent, (2) coating the resultant polymer electrolyte membrane with a catalyst slurry for the other electrode, while the amount of the organic solvent remaining in the polymer electrolyte membrane is 5-20 weight % based on the polymer electrolyte membrane, and (3) after drying, hot-pressing the polymer electrolyte membrane and the electrodes formed on both sides of the membrane.