摘要:
The present invention is to provide a membrane electrode assembly for fuel cell which retains the wet state of a polymer electrolyte membrane and has excellent output characteristic under low humidified condition, under high-temperature condition, or in high current density region, and a fuel cell provided with the membrane electrode assembly. A membrane electrode assembly for fuel cell of the present invention comprises a polymer electrolyte membrane containing at least one or more kinds of proton-conducting polymers, a fuel electrode disposed on one surface of the polymer electrolyte membrane and an oxidant electrode disposed on the other surface thereof, wherein hydrophilicity of one surface of the polymer electrolyte membrane differs from that of the other surface of the polymer electrolyte membrane, in which a surface having relatively high hydrophilicity is defined as a first surface and a surface having relatively low hydrophilicity is defined as a second surface, the fuel electrode is disposed on the first surface of the polymer electrolyte membrane, and the oxidant electrode is disposed on the second surface thereof. A fuel cell of the present invention is provided with the membrane electrode assembly.
摘要:
A membrane electrode assembly for fuel cell that irrespectively of the front or backside of polymeric electrolyte membrane, exhibits high output performance, and that exhibits high junction at an interface between polymeric electrolyte membrane and electrode even under low humidification condition or high temperature condition, or in high current density region, realizing appropriate water management and excellent output characteristics. Further, there is provided a fuel cell including the above assembly. The membrane electrode assembly for fuel cell and fuel cell is one including a polymeric electrolyte membrane containing at least one type of proton conductive polymer; a fuel electrode disposed on one major surface of the polymeric electrolyte membrane; and an oxidizer electrode disposed on the other major surface of the polymeric electrolyte membrane, characterized in that in the use of water contact angle for specifying the hydrophilicity of each surface of the polymeric electrolyte membrane, the difference between the water contact angle on the one major surface of the polymeric electrolyte membrane and that on the other major surface thereof is 30° or less. The provided fuel cell is one having the above assembly.
摘要:
The present invention is to provide an electrolyte membrane which retains durability even after having undergone a dimensional change accompanying chemical deterioration caused owing to radicals having high oxidizing ability such as hydroxyl radicals (.OH) or peroxide radicals (.OOH), and the selecting method thereof.An electrolyte membrane has an amount of dimensional change in a plane direction between dimensions obtained in a dry state before and after carrying out the Fenton test, the amount of dimensional change before and after the Fenton test being smaller than an amount of maximum elastic deformation in a plane direction obtained in dry state before carrying out the Fenton test, provided that the Fenton test is carried out under the following condition, and the selecting method of the same. (1) iron ion (Fe2+) concentration: 4 ppm, (2) hydrogen peroxide concentration: 3 wt %, (3) boiling temperature: 80° C., (4) boiling time: 120 minutes.
摘要:
The present invention is to provide an electrolyte membrane which retains durability even after having undergone a dimensional change accompanying chemical deterioration caused owing to radicals having high oxidizing ability such as hydroxyl radicals (.OH) or peroxide radicals (.OOH), and the selecting method thereof.An electrolyte membrane has an amount of dimensional change in a plane direction between dimensions obtained in a dry state before and after carrying out the Fenton test, the amount of dimensional change before and after the Fenton test being smaller than an amount of maximum elastic deformation in a plane direction obtained in dry state before carrying out the Fenton test, provided that the Fenton test is carried out under the following condition, and the selecting method of the same. (1) iron ion (Fe2+) concentration: 4 ppm, (2) hydrogen peroxide concentration: 3 wt %, (3) boiling temperature: 80° C., (4) boiling time: 120 minutes
摘要:
A polyparaphenylene hydrocarbon electrolyte having a structure represented by a formula (1), a manufacture method therefore, and a polyparaphenylene usable as a raw material for manufacturing the polyparaphenylene hydrocarbon electrolyte, as well as a electrolyte membrane, a catalyst layer and a solid polymer fuel cell that employ the polyparaphenylene hydrocarbon-based electrolyte. In the formula, A is an integer of (1) or greater; B is an integer of 0 or greater; and C is an integer of 1 to 10. X represents a direct bond or an oxygen atom, which is arbitrarily assignable in repetitions. At least one of Y1s represents a proton-conducting site, and the rest of Y1s each represent a hydrogen atom or a proton-conducting site, which is arbitrarily assignable in repetitions. The proton-conducting site is made up of —SO3H, —COOH, —PO3H2 or —SO2NHSO2R (R is an alkyl chain or a perfluoroalkyl chain).
摘要翻译:具有由式(1)表示的结构的聚对亚苯基碳氢化合物电解质,其制造方法和可用作制备聚对亚苯基烃电解质的原料的聚对亚苯基,以及电解质膜,催化剂层和固体聚合物燃料 使用聚对亚苯基烃类电解质的电池。 在该式中,A是(1)或更大的整数; B为0以上的整数; C为1〜10的整数.X表示直接键或氧原子,其可重复任意赋值。 Y 1中的至少一个表示质子传导位点,其余的Y1各自表示氢原子或质子传导位点,其可以重复任意分配。 质子传导位点由-SO 3 H,-COOH,-PO 3 H 2或-SO 2 NHSO 2 R(R为烷基链或全氟烷基链)构成。