Search for dissertations about: "Proton exchange membrane PEM"

Showing result 1 - 5 of 17 swedish dissertations containing the words Proton exchange membrane PEM.

  2. 1. Modelling of a proton exchange membrane fuel cell system for automotive applications

    Author : Kristina Johansson; KTH; []
    Keywords : Proton exchange membrane PEM; Fuel cell vehicle; Hydrogen; Hydrogen storage; Fuel consumption; Electric vehicles; Drive;

    Abstract : .... READ MORE

  4. 2. On Gas Contaminants, and Bipolar Plates in Proton Exchange Membrane Fuel Cells

    Author : Yasna Acevedo Gomez; Carina Lagergren; Göran Lindbergh; Rakel Wreland Lindström; Qinfeng Li; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; PEM fuel cell; contaminants; ammonia; nitrogen dioxide; degradation; recovery; bipolar plates; electroplating; Ni-Mo; Ni-Mo-P; internal contact resistance; PEM bränslecell; föroreningar; ammoniak; kvävedioxid; degradering; återhämtning; bipolära plattor; elektroplätering; Ni-Mo; Ni-Mo-P; interna kontaktmotståndet; Chemical Engineering; Kemiteknik;

    Abstract : The proton exchange membrane (PEM) fuel cell is an electrochemical device that converts chemical energy into electrical energy through two electrocatalytic reactions. The most common catalyst used is platinum on carbon (Pt/C), which has shown the best performance in the fuel cell until now. READ MORE

  5. 3. On direct hydrogen fuel cell vehicles : modelling and demonstration

    Author : Kristina Haraldsson; Per Alvfors; Dougal J. Nelson; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Chemical engineering; direct hydrogen; Proton Exchange Membrane; PEM; fuel cell; fuel cell vehicle; fuel cell hybrid vehicles; on-board hydrogen storage; Kemiteknik; Chemical engineering; Kemiteknik;

    Abstract : In this thesis, direct hydrogen Proton Exchange Membrane (PEM) fuel cell systems in vehicles are investigated through modelling, field tests and public acceptance surveys. A computer model of a 50 kW PEM fuel cell system was developed. The fuel cell system efficiency is approximately 50% between 10 and 45% of the rated power. READ MORE

  6. 4. Limiting processes in anion-exchange membrane fuel cells

    Author : Henrik Grimler; Göran Lindbergh; Rakel Wreland Lindström; Carina Lagergren; Marc Secanell; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; anion-exchange membrane fuel cell; hydrogen oxidation reaction; oxygen reduction reaction; water transport; physics-based modelling; Chemical Engineering; Kemiteknik;

    Abstract : Fuel cells allow for converting chemical energy stored in hydrogen into electrical energy, with only heat and water as by-products. In a sustainable energy society, hydrogen may play an important role due to its ability to act both as an energy carrier and as a valuable chemical in the process industry. READ MORE

  7. 5. Membrane Electrode Assemblies Based on Hydrocarbon Ionomers and New Catalyst Supports for PEM Fuel Cells

    Author : Sophie von Kraemer; Göran Lindbergh; Antonino Aricò; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Catalyst support; Carbon; High Temperature Proton Exchange Membrane Fuel Cell; Hydrocarbon Ionomer; Membrane Electrode Assembly; Nafion; PEFC; PEMFC; Porous Electrode; Sulfonated Polysulfone; Titanium Dioxide; Chemical engineering; Kemiteknik;

    Abstract : The proton exchange membrane fuel cell (PEMFC) is a potential electrochemicalpower device for vehicles, auxiliary power units and small-scale power plants. In themembrane electrode assembly (MEA), which is the core of the PEMFC single cell,oxygen in air and hydrogen electrochemically react on separate sides of a membraneand electrical energy is generated. READ MORE