摘要:
A liquid-gas separator for a direct liquid feed fuel cell includes a tube having an opening portion at a sidewall thereof; liquid extracting members that selectively transmit the liquid in the tube and located at both ends of the tube; a gas extracting membrane that selectively transmits the gas and covers the opening portion; an inlet that guides the liquid and the gas into the tube; chambers that surround an outer side of the liquid extracting member; and outlets that guide the liquid in the chambers to the outside by being connected to the chamber.
摘要:
A composition containing a proton-conductive copolymer, a polymer electrolyte membrane containing the composition; a method of producing the membrane; and a fuel cell employing the membrane. The composition includes: a proton-conductive copolymer comprising a first styrene repeating unit, a second styrene repeating unit, and a dimethylsiloxane repeating unit; and a cross-linked polymer obtained from a cross-linking reaction between a siloxane oligomer having an unsaturated bond and a cross-linking agent. The cross-linked polymer has the same properties as the dimethylsiloxane repeating unit of the proton-conductive copolymer.
摘要:
The invention provides and a highly-dispersed supported catalyst that has a reduced average particle size of catalytic metal particles and is also supported by a porous support material. A method of preparing a supported catalyst that can reduce the average particle size of catalytic metal particles supported by a support material includes first mixing a charged support material with a solution containing a polymer electrolyte having a charge opposite to that of the support material to adsorb the polymer electrolyte on the support material. Next, the support material having the polymer electrolyte adsorbed thereon is mixed with a solution containing a catalytic metal precursor ion having a charge opposite to that of the polymer electrolyte to adsorb the catalytic metal precursor ion on the support material having the polymer electrolyte adsorbed on it. Finally, the catalytic metal precursor ion adsorbed on the support material having the polymer electrolyte adsorbed thereon is reduced to a catalytic metal in a reducing solution.
摘要:
A proton conductive copolymer includes styrene repeating units that have proton conductive functional groups and dimethylsiloxane repeating units. A polymer electrolyte membrane includes the proton conductive copolymer and a fuel cell uses the polymer electrolyte membrane. The proton conductive copolymer has excellent chemical and mechanical properties, excellent ability to form membrane with dimethylsiloxane repeating units, and superior ion conductivity with styrene repeating units that have proton conductive functional groups. Polymer electrolyte membranes that have properties appropriate for the fuel cell electrolyte membrane can be obtained using the proton conductive copolymer. Fuel cells that have improved efficiencies can be obtained using the polymer electrolyte membrane.
摘要:
A membrane electrode assembly for a fuel cell, in which electrical resistance is minimized by including a current collector between a catalyst layer and a fuel diffusion layer inside electrodes to shorten the electron transfer distance, and in which corrosion of the current collector due to direct contact between the current collector and the catalyst in the catalyst layer is prevented by including an electrically conductive current collector-protecting layer between the current collector and the catalyst layer, and a fuel cell including the membrane electrode assembly which can stably exhibit constant performance for a prolonged period of time, and which has excellent efficiency due to low electrical resistance.
摘要:
A liquid-gas separator for a direct liquid feed fuel cell includes a tube having an opening portion at a sidewall thereof; liquid extracting members that selectively transmit the liquid in the tube and located at both ends of the tube; a gas extracting membrane that selectively transmits the gas and covers the opening portion; an inlet that guides the liquid and the gas into the tube; chambers that surround an outer side of the liquid extracting member; and outlets that guide the liquid in the chambers to the outside by being connected to the chamber.
摘要:
A fuel cell system is provided with a first separation layer and a buffer solution layer disposed between a liquid-phase fuel storage layer and an anode of a membrane electrode assembly. A vapor-phase fuel is transferred to the buffer solution layer through the first separation layer, condensed, and diluted to produce a liquid-phase fuel with a low concentration in the buffer solution layer, and the low concentration liquid-phase fuel is supplied to the membrane electrode assembly. A second separation layer may be interposed between the first separation layer and the fuel storage layer. Fuel is supplied by a passive supplying method so that the system can be small with a high efficiency and unnecessary power consumption can be prevented. The fuel cell system can be operated regardless of orientation.
摘要:
A fuel cell includes a cathode, an anode, an electrolyte membrane interposed between the cathode and the anode, and a porous layer containing a moisture retentive material. The anode includes an anode catalyst layer adjacent to the electrolyte membrane and an anode diffusion layer adjacent to the anode catalyst layer, and the porous layer is disposed between the anode catalyst layer and the electrolyte membrane. The performance of the fuel cell can be stably maintained even when a fuel supply is temporarily interrupted due to a malfunction of a pump or clogging of a fuel channel.
摘要:
A trifluorostyrene and substituted vinyl compound based partially fluorinated copolymer, an ionic conductive polymer membrane including the same, and a fuel cell adopting the ionic conductive polymer membrane, wherein the partially fluorinated copolymer has formula (1): where each of R1, R2 and R3 is F, H or CH3; X is a hydroxy group or a trifluoromethyl group; m is an integer greater than zero; n is an integer greater than zero; and p, q and r are zero or integers greater than zero.
摘要翻译:一种三氟苯乙烯和取代的乙烯基化合物基部分氟化共聚物,包含该三氟苯乙烯和取代的乙烯基化合物的部分氟化共聚物,含有该离子导电聚合物膜的燃料电池和采用该离子导电聚合物膜的燃料电池,其中该部分氟化的共聚物具有式(1) R 2,R 3和R 3是F,H或CH 3; X是羟基或三氟甲基; m是大于零的整数; n是大于零的整数; 并且p,q和r为零或大于零的整数。
摘要:
The present invention relates to a modified inorganic material with excellent cation exchange capacity. In addition, the invention relates to a method of preparing the modified inorganic material, a composite electrolyte membrane comprising the modified inorganic material powder that has excellent methanol-repelling ability, and a fuel cell comprising the composite electrolyte membrane. The modified inorganic material includes an inorganic material, and a cation exchanger bonded to the inorganic material.