| 학회 |
한국고분자학회 |
| 학술대회 |
2007년 봄 (04/12 ~ 04/13, 제주 ICC) |
| 권호 |
32권 1호 |
| 발표분야 |
고분자 구조 및 물성 |
| 제목 |
Methanol Crossover Effect for Direct Methanol Fuel Cells : Applicability of Methanol Activity in Polymer Electrolyte Membrane |
| 초록 |
We develop a new cell voltage model as a function of current density response of the direct methanol fuel cell. The impact on cell performance by methanol crossover which lowers the cell performance is discussed. We employ methanol activity term to take into account the methanol crossover effect. Methanol activity equation is derived from the Helmholtz energy of mixing. In this study, we simplify the expression of Helmholtz energy of mixing and correct the mathematical approximation defect using the fractional form. To take the specific interaction into account, the secondary lattice concept which is perturbation to a fixed reference system is introduced. A newly developed cell voltage equation with reasonable boundary conditions includes the methanol crossover effect that plays a major role in determining the cell voltage of DMFC. |
| 저자 |
양정호, 배영찬
|
| 소속 |
한양대 |
| 키워드 |
Cell voltage; DMFC; Methanol activity
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| E-Mail |
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