To provide a polymer electrolyte membrane which can be applied to a polymer electrolyte water electrolyzer, and is capable of producing a polymer electrolyte water electrolyzer having a low electrolytic voltage and excellent in hydrogen gas recovery efficiency, as well as a membrane electrode assembly and a polymer electrolyte water electrolyzer obtainable by using it.;The polymer electrolyte membrane of the present invention contains a polymer electrolyte, of which the hydrogen gas permeation coefficient under the conditions of a temperature of 80° C. and a relative humidity of 10%, is at most 2.4 x 10−9 cm3.cm/(s.cm2.cmHg), wherein the membrane resistance value under the conditions of a temperature of 80° C. and a relative humidity of 50%, is from 50 to 150 mn.cm2.
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机译：提供一种可应用于聚合物电解质水电解槽的聚合物电解质膜，并且能够产生具有低电解电压的聚合物电解质水电解槽，并且具有优异的氢气回收效率，以及膜电极组件和聚合物 通过使用它可获得的电解液水电解槽。;本发明的聚合物电解质膜含有聚合物电解质，其中氢气渗透系数在80℃的温度和相对湿度为10％的条件下，是 大多数2.4 x 10-9 cm3.cm/(s.cm2.cmhg），其中在80℃的温度和相对湿度的条件下，膜电阻值为50％至150mN.cm2 。
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