Search for dissertations about: "Polymer electrolyte fuel cells"

Showing result 1 - 5 of 41 swedish dissertations containing the words Polymer electrolyte fuel cells.

  2. 1. Microphase Separated Cation Conducting Polymers : Design, Synthesis, and Properties

    Author : Hannes Nederstedt; Centrum för analys och syntes; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Polymer; Litiumbatteri; Mikrofasseparering; Bränslceller; Elektrolyt; Polymerelektrolyt; Polymera bränslecellsmembran; Polymer electrolyte fuel cells; Polymer electrolyte; Polymer electrolyte membrane; Microphase separation; Lithium battery; Polymer; Fuel cell; Proton exchange membrane PEM ;

    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

  4. 2. Electrode Degradation in Polymer Electrolyte Fuel Cells

    Author : Linnéa Strandberg; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Catalyst degradation; Platinum stability; Fuel cells;

    Abstract : To mitigate the climate crisis, and reduce carbon emissions from e.g. the transport and energy sectors, hydrogen has been proposed to be used as an environmentally friendly alternative energy carrier. READ MORE

  5. 3. Electrochemical Reactions in Polymer Electrolyte Fuel Cells

    Author : Maria Wesselmark; Svein Sunde; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fuel cell; model electrodes; oxygen reduction; methanol oxidation; formic acid oxidation; hydrogen oxidation; CO oxidation; degradation; tungsten oxide; carbon support; Bränslecell; modellelektroder; syrgasreduktion; metanoloxidation; myrsyraoxidation; vätgasoxidation; CO oxidation; degradering; wolfram oxid; kolsupport; Chemical engineering; Kemiteknik;

    Abstract : The polymer electrolyte fuel cell converts the chemical energy in a fuel, e.g. hydrogen or methanol, and oxygen into electrical energy. The high efficiency and the possibility to use fuel from renewable sources make them attractive as energy converters in future sustainable energy systems. READ MORE

  6. 4. Novel Materials for Fuel Cells and Batteries Light Scattering Studies of the Structure and Dynamics of Polymer Electrolytes

    Author : Hanna Ericson; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; proton conducting polymer; Raman spectroscopy; gel electrolyte; photon correlation spectroscopy; fuel cell membrane; polymer electrolyte;

    Abstract : The development of new materials and technologies for electrochemical energy conversion and storage, such as fuel cells and batteries, is important for a future more efficient use of energy. Polymer electrolytes are key components in polymer electrolyte fuel cells and lithium-based batteries. READ MORE

  7. 5. Electrochemical characterization of materials for next generation polymer electrolyte fuel cells

    Author : Timon Novalin; Rakel Wreland Lindström; Göran Lindbergh; Carina Lagergren; Gareth Hinds; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Polymer electrolyte fuel cells; PEMFC; AEMFC; bipolar plates; corrosion; poly arylene piperidinium ; ionomer; electrode structure; silver nanoparticles; oxygen reduction reaction; Polymerelektrolytbränsleceller; PEMFC; AEMFC; bipolära plattor; korrosion; poly arylenpiperidinium ; jonomer; elektrodstruktur; silvernanopartiklar; syrgasreduktionsreaktion; Chemical Engineering; Kemiteknik;

    Abstract : Polymer electrolyte fuel cells occupy a key position in implementing the hydrogen economy on a global scale. However, assessments of cost, availability and sustainability of materials currently used to manufacture state-of-the-art fuel cell stacks have given cause for concern. READ MORE