| 학회 |
한국고분자학회 |
| 학술대회 |
2008년 봄 (04/10 ~ 04/11, 컨벤션 뷰로(대전)) |
| 권호 |
33권 1호 |
| 발표분야 |
고분자 구조 및 물성 |
| 제목 |
Water and Methanol Uptakes in Polymer Electrolyte Membranes: Application of Molecular Simulation |
| 초록 |
Direct methanol fuel cells using polymer electrolyte membranes have demonstrated improved performance. Main obstacles that limit DMFC performance are the low activity of methanol electro-oxidation catalysts and the crossover of methanol through the polymer electrolyte membrane. To solve the above-mentioned problem a thermodynamic model to be able to predict phase equilibria for these systems reliably is required. Although phase equilibrium theories have been well established to calculate thermodynamic properties of binary mixtures, difficulties are encountered during actual implementation due to the absence of experimental data for parameter determination. In this work, we use a combination of the molecular simulation and thermodynamic models. Methanol and water uptakes in membranes aree determined by a combination method. Also, we present the effect of chemical and different endgroups on the phase behavior. The impact of different alcohols and structural effect will be discussed. |
| 저자 |
양정호, 배영찬
|
| 소속 |
한양대 |
| 키워드 |
Fuel cells; Methanol crossover; Molecular thermodynamics; Molecular Simulation
|
| E-Mail |
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