CAJ | 학술논문

研究了聚吡咯（PPy）/Nafion膜及阴极聚四氟乙烯（PTFE）含量对被动式直接甲醇燃料电池（DMFC）性能的影响。随着聚合时间的延长，PPy/Nafion膜的吸水率逐渐减小、质子导电率下降。当温度为25～30℃，空气湿度为80％～85％时，聚合35 min的PPy/Nafion膜组装的被动式 DMFC 电池性能最好，最大功率密度比未修饰的 Nafion 膜组装的电池提高18.9％；阴极含30％ PTFE的电池性能最好，功率密度最高达14.74 mW/cm2。
연구료취필각（PPy）/Nafion막급음겁취사불을희（PTFE）함량대피동식직접갑순연료전지（DMFC）성능적영향。수착취합시간적연장，PPy/Nafion막적흡수솔축점감소、질자도전솔하강。당온도위25～30℃，공기습도위80％～85％시，취합35 min적PPy/Nafion막조장적피동식 DMFC 전지성능최호，최대공솔밀도비미수식적 Nafion 막조장적전지제고18.9％；음겁함30％ PTFE적전지성능최호，공솔밀도최고체14.74 mW/cm2。
Effects of polypyrrole(PPy)/Nafion membrane and polytetrafluoroethylene(PTFE)content in the cathode backing layer were investigated. The proton conductivity and water uptake of Nafion membranes decreased with increasing polymerization time of pyrrole. The power density of passive direct methanol fuel cell using the PPy/Nafion membrane which polymerization time of 35 min was 18.9% higher than the one with untreated Nafion membrane,at 25 ~30 ℃ and relative moisture at 80%~85%. The optimal value of PTFE content in cathode was 30%. The highest power density of 14.74 mW/cm2 was achieved in a passive DMFC opera-ting with neat methanol.