摘要:
A particle size distribution creating method includes a particle size range determining step, an integrating step of integrating the frequency of appearance of particles within the particle size range determined in the particle size range determining step, a division point determining step of determining particle sizes that provide division points, using the integral of the frequency of appearance obtained in the integrating step, and a typical point determining step of determining the minimum particle size, maximum particle size and the particle sizes of the division points as typical points. This method is characterized by assuming a particle size distribution which contains particles having the particle sizes of the respective typical points and is plotted such that the frequency of appearance of the particles having the particle size of each of the typical points is equal to the integral over each of the regions defined by the typical points, and obtaining the assumed particle size distribution as a particle size distribution model.
摘要:
A fuel cell 10 includes an MEA 200, an anode separator 100 and a cathode separator 300. The anode separator 100 forms alternate first and second flow channels 110 and 120. The first flow channel 110 is blocked in the middle. The second flow channel 120 is blocked in the both ends. The anode separator 300 forms alternate first and second flow channels 310 and 320. The first flow channel 310 is blocked in the middle. The second flow channel 320 is blocked in the both ends.
摘要:
The present invention provides a fuel cell having obstructed passages, which is capable of inhibiting the occurrence of flooding. The fuel cell comprises: a stacked body comprising at least a membrane electrode assembly; and a pair of separators sandwiching the stacked body. A face of the stacked body side of the separator is provided with inlet passage(s) through which reaction gas to be supplied to the stacked body passes and outlet passage(s) through which reaction gas having passed the stacked body passes. The inlet passage is obstructed at a downstream end of the reaction gas to be supplied to the stacked body and the outlet passage is obstructed at an upstream end of the reaction gas having passed through the stacked body. The inlet passage and the outlet passage is arranged separately from each other, and the inlet passage is arranged on both ends of the face of the stacked body side of the separator in the passage width direction of the inlet passage and the outlet passage.
摘要:
The present invention provides a fuel cell having a blocked passage and showing capability of inhibiting desiccation and flooding of the membrane electrode assembly. The fuel cell comprises: a laminated body comprising at least a membrane electrode assembly which includes: an electrolyte membrane, an anode catalyst layer arranged on one surface of the electrolyte membrane, and a cathode catalyst layer arranged on the other surface of the electrolyte membrane; and a pair of separators sandwiching the laminated body, wherein, between the pair of separators, along the laminated body side surface of at least one separator, an inlet passage is provided for getting through a reaction gas supplied to the laminated body and an outlet passage is provided for getting through a reaction gas having passed through the laminated body; the inlet passage is blocked at a downstream end of the reaction gas being supplied to the laminated body and the outlet passage is blocked at an upstream end of the reaction gas having passed through the laminated body; the inlet passage and the outlet passage are arranged separately from each other along the separator; and the depth of the upstream region of the inlet passage is larger than that of the downstream region of the inlet passage.
摘要:
A particle size distribution creating method includes a particle size range determining step, an integrating step of integrating the frequency of appearance of particles within the particle size range determined in the particle size range determining step, a division point determining step of determining particle sizes that provide division points, using the integral of the frequency of appearance obtained in the integrating step, and a typical point determining step of determining the minimum particle size, maximum particle size and the particle sizes of the division points as typical points. This method is characterized by assuming a particle size distribution which contains particles having the particle sizes of the respective typical points and is plotted such that the frequency of appearance of the particles having the particle size of each of the typical points is equal to the integral over each of the regions defined by the typical points, and obtaining the assumed particle size distribution as a particle size distribution model.
摘要:
A particle size distribution creating method includes a particle size range determining step, an integrating step of integrating the frequency of appearance of particles within the particle size range determined in the particle size range determining step, a division point determining step of determining particle sizes that provide division points, using the integral of the frequency of appearance obtained in the integrating step, and a typical point determining step of determining the minimum particle size, maximum particle size and the particle sizes of the division points as typical points. This method is characterized by assuming a particle size distribution which contains particles having the particle sizes of the respective typical points and is plotted such that the frequency of appearance of the particles having the particle size of each of the typical points is equal to the integral over each of the regions defined by the typical points, and obtaining the assumed particle size distribution as a particle size distribution model.
摘要:
A fuel cell system which prevents a reduction in catalyst activity, wherein at least one of the anode catalyst layer and the cathode catalyst layer includes a core-shell type catalyst particle having a core portion including a core metallic material and a shell portion covering the core portion and including a shell metallic material; and wherein the fuel cell system has: a means for storing an initial value of a ratio of the core metallic material to a surface area of the core-shell type catalyst particle, and a means for determining whether or not the ratio of the core metallic material to the surface area of the core-shell type catalyst particle is increased at a predetermined stage, compared to the initial value.
摘要:
Disclosed is a catalyst particle having high catalyst activity and a method for producing the catalyst particle.A catalyst particle comprising a core particle which contains a palladium alloy and an outermost layer which contains platinum, wherein an interlayer comprising only palladium as a simple substance is present between the core particle and the outermost layer.
摘要:
The present invention provides a fuel cell which is capable of improving electric power generation efficiency at a time of high-temperature operation. The fuel cell 10 comprising: a membrane electrode assembly 4; and a pair of gas separators 7, 8 sandwiching the membrane electrode assembly 4 therebetween, wherein at least one of the gas separator(s) 7 and/or 8 comprises a compact layer(s) 7c and/or 8c which is capable of preventing permeation of fluid and a porous layer (s) 7d and/or 8d which allows permeation of fluid, and the porous layer(s) 7d and/or 8d is impregnated with a water-soluble liquid having higher boiling point than that of water.
摘要:
A catalyst particle is composed of an inner particle and an outermost layer that includes platinum and covers the inner particle. The inner particle includes on at least a surface thereof a first oxide having an oxygen defect.