摘要:
The present invention relates to membrane electrode units (MEU) for high temperature fuel cells having an improved stability and a process for their manufacture.
摘要:
The present invention relates to a membrane electrode assembly comprising at least two electrochemically active electrodes separated by at least one polymer electrolyte membrane, the aforementioned polymer electrolyte membrane having fibrous reinforcing elements which at least partly penetrate the polymer electrolyte membrane, wherein at least some of the fibrous reinforcing elements have functional groups which have a covalent chemical bond between the fibers and the polymer of the polymer electrolyte membrane.The membrane electrode assembly is suitable for applications in fuel cells, especially in high-temperature polymer electrolyte fuel cells.
摘要:
The present invention relates to a membrane electrode assembly comprising at least two electrochemically active electrodes separated by at least one polymer electrolyte membrane, the aforementioned polymer electrolyte membrane having fibrous reinforcing elements which at least partly penetrate the polymer electrolyte membrane, wherein at least some of the fibrous reinforcing elements have functional groups which have a covalent chemical bond between the fibers and the polymer of the polymer electrolyte membrane.The membrane electrode assembly is suitable for applications in fuel cells, especially in high-temperature polymer electrolyte fuel cells.
摘要:
The present invention relates to membrane electrode units (MEU) for high temperature fuel cells having an improved stability and a process for their manufacture.
摘要:
The invention relates to a membrane-electrode unit comprising two gas diffusion layers, each layer being in contact with a catalyst layer and said gas diffusion layers being separated by a polymer electrolyte membrane. A polymer frame is provided on at least one of the two surfaces of the polymer electrolyte membrane that are in contact with the catalyst layer. Said polymer frame comprises an inner region that lies on at least one surface of the polymer electrolyte membrane and an outer region that lies outside the gas diffusion layer. The thickness of all components of the outer region is between 50 and 100% of the thickness of all components of the inner region. The thickness of the outer region is reduced by a maximum 2% at a temperature of 80° C. and a pressure of 10 N/mm2 over a period of 5 hours, said reduction in thickness being determined after a first compression process, which is carried out at a pressure of 10 N/mm2 for 1 minute.
摘要翻译:本发明涉及一种膜 - 电极单元,其包括两个气体扩散层,每个层与催化剂层接触,并且所述气体扩散层被聚合物电解质膜隔开。 聚合物框架设置在与催化剂层接触的聚合物电解质膜的两个表面中的至少一个上。 所述聚合物框架包括位于聚合物电解质膜的至少一个表面上的内部区域和位于气体扩散层外部的外部区域。 外部区域的所有部件的厚度在内部区域的所有部件的厚度的50%至100%之间。 外部区域的厚度在5小时内在80℃的温度和10N / mm 2的压力下降低最大2%,所述厚度的减小被确定 在第一压缩过程之后,在10N / mm 2的压力下进行1分钟。
摘要:
The present invention relates to a membrane electrode assembly comprising at least two electrochemically active electrodes which are separated by at least one polymer electrolyte membrane, the aforementioned polymer electrolyte membrane having at least one reinforcement, wherein the reinforcement comprises at least one film which has holes through which the polymer electrolyte membrane is in contact with both electrochemically active electrodes.The membrane electrode assembly is suitable for applications in fuel cells, especially in high-temperature polymer electrolyte fuel cells.
摘要:
A membrane-electrode unit includes two diffusion layers, each layer being in contact with a catalyst layer and the layers separated by a polymer electrolyte membrane. A polymer frame contacts at least one of the two surfaces of the membrane. The frame includes an inner region on at least one surface of the membrane and an outer region outside the diffusion layer. The thickness of the outer region is between 50 and 100% of the thickness of the inner region. The thickness of the outer region is reduced by a maximum 2% at a temperature of 80° C. and a pressure of 10 N/mm over a period of 5 hours, the reduction being determined after a first compression process, carried out at a pressure of 10 N/mm for 1 minute.
摘要:
The present invention relates to a membrane electrode unit having two gas diffusion layers, each contacted with a catalyst layer, which are separated by a polymer electrolyte membrane, wherein the polymer electrolyte membrane has an inner area which is contacted with a catalyst layer, and an outer area which is not provided on the surface of a gas diffusion layer, characterized in that the thickness of the inner area of the membrane decreases over a period of 10 minutes by at least 5% at a pressure of 5 N/mm2 and the thickness of the membrane in the outer area is greater than the thickness of the inner area of the membrane.
摘要翻译:本发明涉及一种具有两个气体扩散层的膜电极单元,每个气体扩散层与催化剂层接触,由聚合物电解质膜隔开,其中聚合物电解质膜具有与催化剂层接触的内部区域, 未设置在气体扩散层的表面上的外部区域,其特征在于,膜的内部区域的厚度在5N / mm 2的压力下在10分钟内降低至少5% 2,外部区域中的膜的厚度大于膜的内部区域的厚度。