Due to the characteristics of MEA tests, researchers have proposed that catalysts' cost-effectiveness and high durability must reach an MEA level to be deployed into technologies within the marketplace for a more reliable measure. Therefore, to enhance the library of MEA results for different catalysts, more emphasis should be placed on the amount of MEA tests reported for ORR electrocatalysts. In addition, the durability of MEA should also be enhanced since the operating temperature of MEA (60 °C-80 °C) is higher than those in RDE tests. Thus, improved investigations on MEA services will also be significant to their practical applications.