介绍了膜电极的主要生产工艺以及近几年膜电极的关键材料质子交换膜、催化材料的最新研究。比较了各种改性膜、无氟膜、复合膜的电导率数据，不同种类改性膜、复合膜中，均有电导率超过Nafion 117指标的材料，其中应用于HT-PEM的聚苯并咪唑离子交换膜的部分参数已经达到了市场上最好的Gore膜指标。催化剂占燃料电池生产成本的30%~40%，当前很多研究中的催化材料的铂负载量已经低于DOE 2020年的相应指标，其中一种Pt-Ni/BNCs纳米球结构催化剂质量活性达到了3.52 A/mg，是当前Pt/C催化剂性能的16.8倍，在经过50 000次的电位扫描循环后，该催化剂的活性衰减小于1.5%。介绍了各种催化剂负载方法，其中超声波喷雾法的Pt负载量可低至0.015 mg/cm²。随着膜材料和催化材料研究的不断进步，膜电极的生产成本将会越来越低。

Main production processes for membrane electrode assembly (MEA) are introduced,and latest research on key materials of MEA in recent years is reviewed.The conductivity data of various modified membrane,fluorine-free membrane and composite membrane are compared.There are many membranes among modified membrane and composite membrane,which have better conductivity than Nafion 117.Some parameters of polybenzimidazole ion exchange membrane applied to HT-PEM have reached the best Gore membrane index in the market.Catalyst accounts for 30%-40% of the production cost of fuel cell.Currently,the platinum loading amount of catalyst materials in many researching materials has been lower than the corresponding index of DOE in 2020.For example,the mass activity of PtNi/BNCs nan-structure catalyst reaches 3.52 A·mg^-1,which is 16.8 times that of Pt/C catalyst.After 50 000 potential scanning cycles,the activity decline of the catalyst is less than 1.5%.In addition,various catalyst loading methods are introduced,in which Pt loading amount by ultrasonic spray method can be as low as 0.015 mg·cm^-2.With the development of membrane materials and catalytic materials,the production cost of membrane electrode assembly will be lower and lower.