Abstract: 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.
郭文林, 李伟斌, 姚根有, 潘登峰, 朱浩, 尹进. MEA生产工艺及关键材料研究进展[J]. 现代化工, 2021, 41(6): 81-85,89.
GUO Wen-lin, LI Wei-bin, YAO Gen-you, PAN Deng-feng, ZHU Hao, YIN Jin. Progress on critical materials and production process for membrane electrode assembly. Modern Chemical Industry, 2021, 41(6): 81-85,89.
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