摘要:
It is an object of this invention to provide a catalyst ink which allows formation of catalyst layers that can adequately improve durability of fuel cells. The catalyst ink of the invention is a catalyst ink for formation of a fuel cell catalyst layer, comprising a catalyst substance, a solvent and an aromatic polymer compound having a phosphorus atom-containing functional group, wherein at least the aromatic polymer compound is dispersed, and not dissolved, in the solvent.
摘要:
A membrane-electrode assembly 1 having an anode catalyst layer 20 and cathode catalyst layer 30 that are mutually opposing and a polymer electrolyte membrane 10 formed between the anode catalyst layer 20 and cathode catalyst layer 30, wherein the anode catalyst layer 20 is composed of a plurality of ion-exchange layers 20a and 20b with different layer ion-exchange capacities, and of the plurality of ion-exchange layers 20a and 20b, ion-exchange layer A (20a) having the smallest layer ion-exchange capacity is situated more toward the polymer electrolyte membrane 10 side than ion-exchange layer B (20b) having the largest layer ion-exchange capacity, and the ratio of the layer ion-exchange capacity of the ion-exchange layer B (20b) with respect to the layer ion-exchange capacity of the ion-exchange layer A (20a) is 1.7 or greater.
摘要:
A magnetic recording medium is provided, which has at least one soft magnetic layer, at least one seed layer, at least one underlayer and at least one perpendicular magnetic recording layer, and is characterized in that the or each seed layer is comprised of a covalently bonded material. The covalently bonded material preferably predominantly comprises a nitride having a hexagonal crystal structure, more preferably, predominantly comprises aluminum nitride having a hexagonal wurtzite crystal structure. This magnetic recording medium is superior in recording and reproducing an information with high density.
摘要:
There is provided a membrane-electrode assembly including catalyst layers disposed on both surfaces of an electrolyte membrane, wherein water transfer resistance of said electrolyte membrane, calculated by the following formula (F1), is 10 μm·g/meq or less and a platinum amount contained in at least one of the catalyst layers is 0.02 to 0.20 mg/cm2. [Water transfer resistance]=[membrane thickness of electrolyte membrane (μm)]/[ion exchange capacity of electrolyte membrane (meq/g)] (F1)
摘要:
A process for producing a polymer electrolyte emulsion having the following steps (1) and (2) is provided. Step (1): a step of dissolving a polymer electrolyte in a solvent comprising a good solvent for the polymer electrolyte to prepare a polymer electrolyte solution having a polymer electrolyte concentration of 0.1 to 10% by weight. Step (2): a step of mixing the polymer electrolyte solution obtained in the step (1), and a poor solvent for the polymer electrolyte at a ratio of 4 to 99 parts by weight of the poor solvent based on 1 part by weight of the polymer electrolyte solution. In addition, a process for producing a polymer electrolyte emulsion comprising separating a polymer electrolyte dispersion in which a polymer electrolyte particle is dispersed in a dispersing medium, with a membrane is provided.
摘要:
A terminal B, which is to enter a network, transmits a beacon including a network identifier and an operation mode of the terminal B. As the network identifier, the terminal identifier of a terminal that has issued an attribute certificate used for connecting the terminal B to the network can be used. Upon receiving the beacon, a terminal A checks whether the operation mode of the terminal A coincides with the operation mode contained in the beacon. The terminal A then sends an authentication request to the terminal B by providing an attribute certificate that matches the network identifier contained in the beacon.
摘要:
An anode target is roratably supported by a rotating mechanism having a rotary body and a staionary body. A fitted portion between the rotary body and the stationary body is formed of bearing areas having dynamic pressure type sliding bearings and a non-bearing area having a clearance between the rotary body and the stationary body larger than that in the bearing areas. The rotary body facing the non-bearing area is positioned where a time for heat transfer from the anode target is shorter than the rotary body facing the bearing areas. Thus, the characteristics of heat radiation from the anode target can be improved, and a stable bearing operation can be maintained.
摘要:
A wireless communication system for performing multi-hop transmission between stations includes: a requesting station for requesting multi-hop transmission; a destination station which receives the request from the requesting station; and neighbor stations, wherein the requesting station determines a communication capacity for each neighbor station and transmits a routing request message in which capacity information is described to each neighbor station, and based on the capacity information described in the routing request message received from each neighbor station, the destination station determines as to which routing request message to respond to and performs routing.
摘要:
There is disclosed a pipette-washing device for use with an automatic biochemical analyzer. The pipette-washing device includes a wash fluid-ejecting block for ejecting a wash fluid toward pipette. An upwardly spreading groove is formed in the top surface of the body of the block and extends along the trajectory of the front end of the pipette. The groove is connected at its lower end with the vertical wash fluid channel. A lateral draining channel is formed in the body of the block and connected with the lower end of the vertical wash fluid channel. When the pipette moves, the front end of the pipette moves through the groove. The block is inclined at an angle to the vertical within a plane in which the groove extends.
摘要:
An integrated circuit especially suitable for incorporation into the base and handset units of a cordless telephone integrates the speech, control channels, and microcontroller portions of a modem, and the man-machine interface functions of a cordless telephone. The integrated circuit includes one or more of a number of aspects including an in-circuit emulation mechanism, a simplified keypad reporting mechanism, advanced noise suppression mechanisms, a low power emergency mode mechanism, a low cost serial control bus, a port pin interrupt mechanism, advanced power saving mechanisms, spectral measurement test mode means, a novel shut down mechanism, and a pull-up disabling mechanism.