| Summary: | 碩士 === 明道管理學院 === 材料暨系統工程研究所 === 94 === The objective of this paper is to analyze the membrane electrode assembly (MEA) of Direct Methanol Fuel Cell (DMFC) in order to provide a reference for the design of DMFC.
Due to the slow kinetics of methanol oxidation, and whether the anode should be hydrophobic or hydrophilic was seldom discussed in relative researches. Therefore, this paper will focus on the electrode of anode.
First, the anodic GDL is treated with different hydrophilic degree. Then the microstructure of GDL is observed with SEM and the experiments of GDL water content and water droplet contact angle are carried out. The results will be compared with each other so as to find the optimal treatment procedure of anode.
The second part of this paper proposes a design of DMFC system. After choosing the appropriate MEAs for DMFC stack, we combine the stack with water circulatory system, air circulatory system, and electricity controller to complete a DMFC system and then discuss its efficiency as a whole.
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