摘要:
To provide an ion exchange membrane for alkaline chloride electrolysis having a low electric resistance and further having a sufficient mechanical strength.To employ an ion exchange membrane containing a polymer having units (U1). Q1, Q2=a perfluoroalkylene group or the like; Rf1, Rf2=a perfluoroalkyl group or the like; X1=an oxygen atom or the like; a=0 or the like; Y1=a fluorine atom or the like; r=0 or 1; and M=a hydrogen atom or an alkali metal atom.
摘要翻译:提供具有低电阻并且还具有足够机械强度的碱性氯化物电解用离子交换膜。 使用含有具有单元(U1)的聚合物的离子交换膜。 Q1,Q2 =全氟亚烷基等; Rf1,Rf2 =全氟烷基等; X1 =氧原子等; a = 0等; Y1 =氟原子等; r = 0或1; M =氢原子或碱金属原子。
摘要:
It is to provide a membrane/electrode assembly excellent in the power generation characteristics under low or no humidity conditions and under high humidity conditions, and an electrolyte material suitable for a catalyst layer of the membrane/electrode assembly.It is to use an electrolyte material, which comprises a polymer (H) having ion exchange groups converted from precursor groups in a polymer (F) having repeating units (A) having a precursor group represented by the formula (g1) and repeating units (B) based on a perfluoromonomer having a 5-membered ring, and having a density of at most 2.03 g/cm3, the polymer (H) having an ion exchange capacity of from 1.3 to 2.3 meq/g dry resin: wherein Q1 and Q2 are a perfluoroalkylene group having an etheric oxygen atom, or the like, and Y is F or the like.
摘要翻译:提供一种在低或无湿度条件下和高湿度条件下发电特性优异的膜/电极组件,以及适用于膜/电极组件的催化剂层的电解质材料。 使用电解质材料,其包含在具有由式(g1)表示的前体基团和重复单元(重复单元)的重复单元(A)的聚合物(F)中由前体基团转化的离子交换基团的聚合物(H) B)基于具有5元环的全氟单体,并且密度为至多2.03g / cm 3,所述聚合物(H)的离子交换容量为1.3-2.3meq / g干树脂:其中Q1和Q2 是具有醚性氧原子等的全氟亚烷基,Y是F等。
摘要:
To provide a membrane/electrode assembly for polymer electrolyte fuel cells, a polymer electrolyte fuel cell and processes for their production, which make it possible to stably exhibit a high power generation performance in various environments. A membrane/electrode assembly for polymer electrolyte fuel cells, which comprises a first electrode having a first catalyst layer and a first gas diffusion layer, a second electrode having a second catalyst layer and a second gas diffusion layer, and a polymer electrolyte membrane disposed between the first electrode and the second electrode, wherein the 90° peel strength at least one of the interface between the first electrode and the polymer electrolyte membrane and the interface between the second electrode and the polymer electrolyte membrane is at least 0.03 N/cm.
摘要:
A membrane/electrode assembly for a polymer electrolyte fuel cell, comprising an anode and a cathode each having a catalyst layer containing a proton conductive polymer, and a polymer electrolyte membrane disposed between the anode and the cathode, wherein the proton conductive polymer has an electrical conductivity of at least 0.07 S/cm at a temperature of 80° C. at a relative humidity of 40% and has a water content less than 150 mass %.
摘要:
It is to provide an electrolyte material with which an increase in the water content can be suppressed even when the ion exchange capacity of a polymer having repeating units based on a monomer having a dioxolane ring is high; and a membrane/electrode assembly excellent in the power generation characteristics under low or no humidity conditions and under high humidity conditions.It is to use an electrolyte material, which comprises a polymer (H) having ion exchange groups converted from precursor groups in a polymer (F), and having an ion exchange capacity of at least 1.35 meq/g dry resin, the polymer (F) having repeating units (A) based on a perfluoromonomer having a precursor group of an ion exchange group and a dioxolane ring and repeating units (B) based on a perfluoromonomer having no precursor group and having a dioxolane ring, and having a TQ of at least 200° C., which is a temperature at which the melt volume rate becomes 100 mm3/sec when the polymer (F) is subjected to melt-extrusion under an extrusion pressure condition of 2.94 MPa from a nozzle having a length of 1 mm and an inner diameter of 1 mm.
摘要:
It is to provide a membrane/electrode assembly excellent in the power generation characteristics under low or no humidity conditions and under high humidity conditions; and an electrolyte material having a low water content, suitable for a catalyst layer of a membrane/electrode assembly.It is to use an electrolyte material, which comprises a polymer (H) having ion exchange groups converted from precursor groups in a polymer (F), the polymer (F) having repeating units (A) based on a perfluoromonomer having a precursor group of an ion exchange group and a 5-membered ring to which the precursor group is bonded and repeating units (B) represented by the formula (u2), and having an intrinsic viscosity of at least 2.3 dL/g. wherein R1 to R4 are a fluorine atom, a C1-6 perfluoroalkyl group or the like.
摘要:
A polymer electrolyte membrane made of a polymer has a low electrical resistance, high heat resistance and is strong against repeats of swelling and shrinkage. Thus, a membrane/electrode assembly for polymer electrolyte fuel cells having high power generation performance and excellent in durability can be provided.For a polymer electrolyte membrane 15 or for a catalyst layer 11 constituting electrodes 13 and 14, a polymer comprising units (U1) and units (U2) is used: Q1, Q2, Q3: a perfluoroalkylene group which may have —O— or the like; Rf1, Rf2: a perfluoroalkyl group which may have —O—; X1, X2: an oxygen atom or the like; a, b: 0 or the like; Y1, Y2: a fluorine atom or a monovalent perfluoroorganic group; and s, t: 0 to 1.
摘要:
To provide a polymer electrolyte membrane for polymer electrolyte fuel cells, which is less likely to be broken even when it undergoes repetition of swelling in a wet state and shrinkage in a dry state and a membrane/electrode assembly using it.To provide a polymer electrolyte membrane 15 in which the tensile yield stress obtained from the tensile stress-strain curve in accordance with the tensile test according to JIS K 7161-1994 at a temperature of 80° C. at a strain rate of 1/min and by means of an evaluation method according to JIS K 7161-1994, is at most 5.5 MPa; and a membrane/electrode assembly 10 having the polymer electrolyte membrane 15 disposed between an anode 13 and a cathode 14 each having a catalyst layer 11.
摘要翻译:为了提供聚合物电解质燃料电池用高分子电解质膜,即使在湿状态下发生膨胀,干燥状态下收缩也不容易破裂,也可以使用该高分子电解质膜。 提供一种聚合物电解质膜15,其中拉伸应力 - 应变曲线根据JIS K 7161-1994的拉伸试验获得的拉伸屈服应力在80℃的温度下以1 / min的应变速率 根据JIS K 7161-1994的评价方法,最高为5.5MPa; 以及具有设置在各自具有催化剂层11的阳极13和阴极14之间的聚合物电解质膜15的膜/电极组件10。
摘要:
To provide a polymer electrolyte membrane for polymer electrolyte fuel cells having high mechanical strength and excellent dimensional stability when it contains water even when it is made thin and the concentration of ionic groups is increased so as to reduce the electrical resistance, and a membrane/electrode assembly providing high output and having excellent durability.
摘要:
A process for producing fluoropolymer particles includes preparing a solution/dispersion containing fluoropolymer dissolved/dispersed in a first solvent such that the swelling of fluoropolymer by the first solvent is from 50 to 1,200%, and mixing the solution/dispersion with a second solvent such that fluoropolymer forms particles and the swelling of fluoropolymer by the mixture of the first and second solvents is from 0 to 100%. WC/WB is in the range of from 1 to 5, WB represents mass of the first solvent, WC/ represents mass of the second solvent, WC/WB represents a ratio of the mass of the second solvent to the mass of the first solvent. SBC/SB is at most 0.5. SBC represents the swelling by the mixture of the first and second solvents, SB represents the swelling by the first solvent, and SBC/SB represents a ratio of the swelling by the mixture to the swelling by the first solvent.