Recent developments of the measurement of the methanol permeation in a direct methanol fuel cell
| Autor: | Jiri Divisek, Hans-Friedrich Oetjen, Hendrik Dohle, C Zingler, Jürgen Mergel, Detlef Stolten |
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| Rok vydání: | 2002 |
| Předmět: |
Methanol reformer
Renewable Energy Sustainability and the Environment Inorganic chemistry Energy Engineering and Power Technology Direct-ethanol fuel cell Cathode Anode law.invention chemistry.chemical_compound Direct methanol fuel cell chemistry law Methanol Electrical and Electronic Engineering Physical and Theoretical Chemistry Methanol fuel Electrochemical reduction of carbon dioxide |
| Zdroj: | Journal of Power Sources. 105:274-282 |
| ISSN: | 0378-7753 |
| DOI: | 10.1016/s0378-7753(01)00953-3 |
| Popis: | The performance and the efficiency of direct methanol fuel cells (DMFCs) are affected by the methanol permeation from the anode to the cathode. A widely used method to measure the methanol permeation in a DMFC is the analysis of the carbon dioxide content of the cathode exhaust. During the operation of a DMFC large amounts of carbon dioxide are produced in the anodic catalyst layer which can diffuse partially to the cathode. As a consequence the carbon dioxide in the cathodic exhaust gas stream is expected to consist of two fractions: the carbon dioxide resulting from the oxidation of the permeating methanol and the carbon dioxide diffusing from the anode to the cathode. In this work we describe a way to separate the distribution of the two fractions under real DMFC operating conditions. As a results we found that with low methanol concentrations ( |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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