| DMFC용 무기-유기 복합 전해질 막의 합성 |
| 김은형, 윤국호, 박성범, 오명훈, 김성진, 박용일 |
| 금오공과대학교 신소재시스템공학부 |
| Synthesis of Inorganic-Organic Composite Electrolyte Membranes for DMFCs |
| Eun-Hyung Kim, Gug-Ho Yoon, Sung-Bum Park, Myung-Hoon Oh, Sung-Jin Kim, Yong-Il Park |
| School of Advanced Materials & Systems Engineering, Kumoh National Institute Technology |
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| ABSTRACT |
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The FAS(Fluoroalkylsilane)/Nafion inorganic-organic composite electrolyte membrane was successfully fabricated through sol-gel method. The FAS having hydrophobic functional group and silanol ligands is impregnated in $Nafion^{(R)}$ membrane to reduce methanol crossover. The prepared FAS/Nafion inorganic-organic composite electrolyte membrane consist of the hydrophobic FAS-derived silicate nano-particles and $Nafion^{(R)}$ matrix showed decrease of methanol crossover and reduction of humidity dependence without large sacrifice of proton conductivity. The microstructural analysis of the composite membranes was performed using FESEM and FTIR. And the effect of the incorporation of the hydrophobic FAS-derived silicate nano-particles into $Nafion^{(R)}$ membrane was investigated via solvent uptake, membrane expansion rate, humidity dependency of proton conductivity and contact angle measurement. |
| Key words:
Direct methanol fuel cell, Methanol crossover, Sol-gel method, FAS(Fluoroalkylsilane) |
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