이황화몰리브덴을 촉매로 활용한 막 전극 조립체 열 압축 최적화에 대한 연구

Abstract

Recently, Proton Exchange Membrane Electrolyzer Cell (PEMEC) is drawing attention as a hydrogen energy production device. However, the high price of platinum used as a catalyst for the Gas Diffusion Electrode (GDE), which is one of the components of PEMEC, is making it difficult to commercialize. Therefore, the use of alternative catalysts in GDE and the optimization of membrane electrode assembly (MEA), which is a combination of GDE, are essential. Accordingly, the MEA was optimized using a hot pressing method as a catalyst molybdenum disulfide. The experiment was carried out under 8 conditions using the 2³ design of experiment method. In order to fabricate the MEA, an experiment was conducted using the main parameters of hot pressing, such as process time, pressure, and temperature, as variables. The temperature was set to 100-120℃, the pressure was 35-105 bar, and the process time was 1-3 minutes. After hot pressing, cyclic voltammetry was performed 10 times for stabilization, and then the current density was measured through chromoamperometry. Based on this, the main effects and interaction effects of major variables were analyzed through minitap software. As a result of the analysis, it was confirmed that temperature had the most major influence on performance, and the optimal conditions were 100℃, 35 bar, and 1 minute. These studies are expected to have an impact on the activation of various types of catalyst research that will be applied to PEMEC in the future.