Study on Optimum Parametric and Numerical Analysis of Direct Methanol Fuel Cells
碩士 === 國立屏東教育大學 === 應用化學暨生命科學系 === 100 === Up to the present, the direct methanol fuel cell still has the following drawbacks to be overcome: the activity of electrode catalyst is low, the electrocatalyst is susceptible to CO which is a byproduct, and the methanol crossover is high. Note that the pr...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2012
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| Online Access: | http://ndltd.ncl.edu.tw/handle/51993262781362686297 |
| Summary: | 碩士 === 國立屏東教育大學 === 應用化學暨生命科學系 === 100 === Up to the present, the direct methanol fuel cell still has the following drawbacks to be overcome: the activity of electrode catalyst is low, the electrocatalyst is susceptible to CO which is a byproduct, and the methanol crossover is high. Note that the problem of methanol crossover can be mitigated if a highly active electrocatalyst can be developed. This study is for developing an electrocatalyst with a high performance. We chose the Pt-Ru bimetal catalyst which was generally accepted to have a high resistance to CO poisoning as a target.
In this study, the theoretical model and numerical simulation of Direct Methano l Fuel Cell (DMFC) is developed to simulate the reaction mechanisms and the cell voltage under several different designing parameters and operational conditions.
the commercial software COMSOL Multiphysics 3.5a is utilized to simulate the 2D single cell in the Membrane Electrode Assembly (MEA) of DMFC numerically by using Finite Element Method (FEM). This thesis is mainly based on the numerical simulation method to analyze the internal reaction mechanism of the DMFC and influence of the output power.
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