甘油对聚苯并咪唑基膜电极结构和性能的影响.

In order to maximize the performance of membrane electrode assembly（MEA）, it is necessary to activate it. The pore structure of MEA often plays a key role to activation. In this paper, the MEAs with different pore structure was prepared by adding different content of glycerol into catalyst slurry, and the effect of glycerol content on the structure and performance of PBI based MEAs was investigated. The results showed that, with the increase of glycerol content, the macropore content of about 100 μm increased, and the surface contact angle of GDE decreased in turn.The shorter the time reguired for the performance of MEA to reach stability, the smaller the improvement of MEA performance before and after activation.However, when the glycerol content increased to 3.0 mg/cm², the performance of the MEA decreased significantly. The optimum glycerol content was 1.5 mg/cm². [ABSTRACT FROM AUTHOR]