Abstract:
A polymer electrolyte membrane for use in a fuel cell and a method of producing a polymer electrolyte membrane. The method includes preparing a phosphate monomer solution by dissolving an initiator and a phosphate monomer containing at least one phosphoric acid group and at least one unsaturated bond in a solvent, impregnating a porous polymer matrix with the phosphate monomer solution, polymerizing the impregnated phosphate monomer, and impregnating the result of polymerization with a phosphoric acid.
Abstract:
A polymer membrane composition for a fuel cell, a polymer membrane prepared therefrom, a membrane electrode assembly, a fuel cell including the same, and associated methods, the polymer membrane composition including a polymer, the polymer including a cation exchange group and a carbon double-bond-containing cross-linkable group, a (meth)acryl-based compound, the (meth)acryl-based compound including a cation exchange group, and a polymerization initiator.
Abstract:
A polymer membrane composition for a fuel cell, a polymer membrane prepared therefrom, a membrane electrode assembly, a fuel cell including the same, and associated methods, the polymer membrane composition including a polymer, the polymer including a cation exchange group and a carbon double-bond-containing cross-linkable group, a (meth)acryl-based compound, the (meth)acryl-based compound including a cation exchange group, and a polymerization initiator.
Abstract:
Organic/inorganic complex proton conductors are provided which display high proton conductivity over a wide temperature range. Electrodes for fuel cells which include the organic/inorganic complex proton conductors are also provided. The invention also advantageously provides electrolyte membranes for fuel cells including the organic/inorganic complex proton conductors, and fuel cells including the organic/inorganic complex proton conductors.
Abstract:
Provided are an apparatus and method for improving transmission control protocol (TCP) performance using path recovery notification over a wireless network. The apparatus includes: a path recovery manager which detects a mobile host recovered from a temporary disconnection state and then outputs a detection signal to notify the detection result; a path recovery notification manager which receives the detection signal and generates an ACK (acknowledgement) packet to inform a transmitting end that the mobile host is recovered; and a first packet transceiver which transmits/receives the generated ACK packet and a data packet. Accordingly, a temporary disconnection state of a wireless network is explicitly informed to a transmitting end so as to transmit only lost packets without performing unnecessary congestion control, thereby improving TCP performance.
Abstract:
This invention is related to an apparatus for treating substrates. According to the present invention, the substrate is cleaned by injecting high temperature and high pressure steam on substrate. A steam generator is configured to continually provide steam on substrate. After cleaning by steam, cleaning by brush may be followed.
Abstract:
The present invention provides a susceptor power-interface assembly which is used for a chamber process module that includes a power supply, a process chamber and a susceptor, wherein the susceptor includes a susceptor shaft penetrating a bottom of the process chamber and a susceptor base on which a wafer is disposed for the process. The susceptor power-interface assembly electrically connects the power supply to the susceptor base. For the electrical-connection between the power supply to the suceptor base, the susceptor power-interface assembly includes a first flange at the end of the susceptor shaft, the first flange bent outside from the susceptor shaft; a second flange having a circular shape, the second flange coupled with the first flange using screws; a plurality of connectors penetrating the second flange, wherein one part of each connector is disposed on the inner surface of the second flange and electrically connected to the susceptor base, wherein the other part of each connector is disposed on the outer surface of the second flange; and a plurality of power boots each having a hole so as to cap each connector disposed on the outer surface of the second flange, wherein each connector slide into the hole of each power boot to be coupled with the power boot. The susceptor power-interface assembly further includes an O-ring packing that is interposed between the first and second flanges and made of Teflon.