Search for dissertations about: "PEM"
Showing result 16 - 20 of 53 swedish dissertations containing the word PEM.
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16. The Impact of Hydrocarbon and Carbon Oxide Impuritiesin the Hydrogen Feed of a PEM Fuel Cell
Abstract : The proton exchange membrane fuel cell generates electricity from hydrogen and oxygen (from air) through electrocatalytic reactions in an electrochemical cell. The Pt/C catalyst, commonly used in PEM fuel cells, is very sensitive to impurities that can interact with the active catalyst sites and limit fuel cell performance. READ MORE
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17. Numerical simulation of multi-scale transport processes and reactions in pem fuel cells using two-phase models
Abstract : A numerical study for the cathode of a PEM fuel cell has been performed in this study. The results have been limited to cathode only because, in PEM fuel cells, the oxygen reduction reactions, ORRs, are considered the rate limiting reactions and govern the fuel cell performance. READ MORE
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18. Structure, interactions and functionality in novel electrolyte materials for fuel cell applications
Abstract : It is today well known that fossil fuels will sooner or later be depleted, and the need to find alternative energy sources is now accepted. Among the diverse technologies developed to produce energy, considerable interest is currently directed to the hydrogen fuel cell, a device that converts chemical into electrical energy, is versatile and has a low environmental impact. READ MORE
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19. Modelling of a proton exchange membrane fuel cell system for automotive applications
Abstract : .... READ MORE
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20. Microphase Separated Cation Conducting Polymers : Design, Synthesis, and Properties
Abstract : This thesis describes the synthesis and properties of five different cation conducting polymer systems. These systems were designed so that the polymers would be able to microphase separate into distinct phases with one phase for mechanical strength and one for ionic conductivity. READ MORE