摘要:
Disclosed is an electrocatalyst which comprises an inorganic support and a ternary alloy essentially consisting of platinum-palladium-ruthenium supported on the support. The electrocatalyst possesses excellent anti-poisoning against carbon monoxide.
摘要:
Disclosed herein are a platinum alloy catalyst comprising an electroconductive support and platinum-nickel-cobalt alloy particles having an ordered structure supported on the electroconductive support, and a process of preparing the catalyst. The catalyst possesses higher activity and longer durability because of its ordered structure.
摘要:
Disclosed are a gas diffusion electrode for an electrochemical cell which comprises a catalyst layer formed by binding, by means of poiytotrafluoroethylene, catalyst-supporting carbon black and catalyst-non-supporting carbon black having a fluorinated polyolofine film on substantially whole surface, the catalyst layer being integrated on a substrate, and a process of preparing same. Since the carbon black employed for the formation of the gas network in the catalyst layer of the gas diffusion electrode having the above constitution in accordance with the present invention is completely hydrophobically treated, no electrolyte permeates this portion and the carbon black exhibits high hydrophobicity so that the wet-proofing is maintained even after the long operation period to enable the gas supply to the catalyst particles so as to provide the gas diffusion electrode with a long life and high electrode performances.
摘要:
The polymer solid-electrolyte composition according to the present invention comprises a polymer solid electrolyte selected from the group consisting of perfluorocarbon sulfonic acid, polysulfones, perfluorocarbonic acid, styrene-divinylbenzene sulfonic acid cation-exchange resins and styrene-butadiene anion-exchange resins, and 0.01-50% by weight of fine particle silica and/or fibrous silica fiber relative to the weight of the polymer solid electrolyte.
摘要:
Disclosed herein are process of preparing carbon supports coated with polyolefin or fluorinated polyolefin to be employed as a network substrate of such an electrochemical cell, in these processes, a solvent which solvates the polyolefin is employed for forming polyolefin in the shape of nearly single fibers which are the smallest unit conceivable. The carbon supports coated with the said solvated polyolefin which possesses the maximum uniformity concalvable have the maximum performance when they are employed in a gas diffusion electrode.
摘要:
Disclosed is a process of preparing fluorinated material which comprises thermally treating the mixture of carbon black and hydrocarbon polymer compound powder for covering the surface of the carbon black with the latter and fluorinating the hydrocarbon polymer compound. The thermal treatment can be conducted in two stages.The fluorinated material prepared in accordance with the present invention can provide much more pore volumes acting as gas networks in, for example, an electrode which exhibits high gas permeability or gas supplying ability. Further, the hydrophobicity is as high as that of the material prepared in accordance with mixing carbon black with hydrocarbon polymer compound dispersed in an organic solvent, and is higher than that of the conventional mixture of carbon black and polytetrafluoroethylene particles. The fluorinated material is preferably employed to a fuel cell as gas network material.
摘要:
A powder container includes a rotatable powder storage to store powder for image formation, a conveyor to transport the powder inside the powder storage, and a scooping portion to scoop the powder inside the powder storage. The conveyor transports the powder in a powder conveyance direction parallel to a rotation axis of the powder storage toward an opening at one end of the powder storage. The scooping portion causes the powder to flow to the opening. The scooping portion includes a scooping face extending from an inner face of the powder storage toward the rotation axis of the powder storage, and a rim disposed along an inner end of the scooping face in a diameter direction of the powder storage, and at least a portion of the rim protruding downstream beyond the scooping face in a rotation direction of the powder storage.
摘要:
A magnetic permeability detector includes an LC oscillator circuit including a coil and a capacitor; and a resistor connected in series with the coil.
摘要:
A reflector apparatus includes reflectors, which respectively radiate reflected waves in predetermined polarization directions. A polarized wave information reading circuit fixed to a moving body radiates a radio wave toward the reflecting apparatus from a transmitting antenna, receives reflected waves from the reflecting apparatus, and generates a received level difference signal that corresponds to a polarization direction of the received reflected waves. A position calculating circuit calculates a position of the polarized wave information reading circuit based on the received level difference signal.
摘要:
A command system of a power conditioning system of the present invention receives return pattern information including a time instance and an upper output limit, and issues a command with respect to the upper output limit of the power conditioning system, the return pattern information being for preventing the frequency of an isolated power system, which is calculated by a planning server, from causing a sharp change.