Search for dissertations about: "polymer electrolyte"

Showing result 1 - 5 of 112 swedish dissertations containing the words polymer electrolyte.

  1. 1. Electrolyte Semiconductor Combinations for Organic Electronic Devices

    University dissertation from Linköping : Linköping University Electronic Press

    Author : Elias Said; Magnus Berggren; Xavier Crispin; Gilles Horowitz; [2009]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TECHNOLOGY Chemical engineering Chemical process and manufacturing engineering Electrochemistry; TEKNIKVETENSKAP Kemiteknik Kemisk process- och produktionsteknik Elektrokemi;

    Abstract : The discovery of semi-conducting organic materials has opened new possibilities for electronic devices and systems because of their solution processibility, lightweight and flexibility compared to inorganic semiconductors. The combination of semiconductors with electrolytes, and more especially organic semiconductors and solid electrolytes has attracted the attention of researchers because of the multiple phenomena originating from the simultaneous motion of electrons and ions. READ MORE

  2. 2. Electrolyte-Gated Organic Thin-Film Transistors

    University dissertation from Linköping : Linköping University Electronic Press

    Author : Lars Herlogsson; Linköpings universitet.; Linköpings universitet.; [2011]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Organic electronics; Thin-film transistor; Organic semiconductor; Polymer; Electrolyte; Polyelectrolyte; TECHNOLOGY Electrical engineering; electronics and photonics Electronics; TEKNIKVETENSKAP Elektroteknik; elektronik och fotonik Elektronik;

    Abstract : There has been a remarkable progress in the development of organic electronic materials since the discovery of conducting polymers more than three decades ago. Many of these materials can be processed from solution, in the form as inks. READ MORE

  3. 3. Amphiphilic Graft Copolymer Electrolytes for Lithium-Ion Polymer Batteries. - Preparation and Characterisation

    University dissertation from Birgitta Rydh, Dep. Polymer Science & Engineering, Chemical Center, Lund University

    Author : Patrik Gavelin; Lund University.; Lunds universitet.; [2002]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Polymer technology; biopolymers; Polymerteknik; Kemiteknik och kemisk teknologi; Chemical technology and engineering; transport dynamics; ion conductivity; solid polymer electrolyte; gel electrolyte; macromonomer copolymerization; amphiphilic graft copolymer;

    Abstract : In the present work amphiphilic graft copolymers were prepared by free radical copolymerization of macromonomers in solution. The graft copolymers consisted of methacrylate backbones bearing ethylene oxide (EO)n side chains of varying length as ionophilic groups, and fluorocarbon (CF2)6 side chains or hydrocarbon groups as ionophobic groups. READ MORE

  4. 4. Evaluating Cathode Catalysts in the Polymer Electrolyte Fuel Cell

    University dissertation from Stockholm : KTH

    Author : Henrik Ekström; KTH.; [2007]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; fuel cell; humidity; model electrodes; Nafion; oxygen reduction; PEMFC; platinum; polymer electrolyte; thin film evaporation; titanium oxide; bränslecell; fuktighet; modellelektroder; Nafion; PEMFC; platina; polymerelektrolyt; syrereduktion; tunnfilmsförångning; titanoxid; TECHNOLOGY Chemical engineering Chemical process and manufacturing engineering Electrochemistry; TEKNIKVETENSKAP Kemiteknik Kemisk process- och produktionsteknik Elektrokemi;

    Abstract : The polymer electrolyte membrane fuel cell (PEMFC) converts the chemical energy of hydrogen and oxygen (air) into usable electrical energy. At the cathode (the positive electrode), a considerable amount of platinum is generally required to catalyse the sluggish oxygen reduction reaction (ORR). READ MORE

  5. 5. Lithium Ion Conductive Membranes Based on Co-continuous Polymer Blends

    University dissertation from Department of Polymer Science & Engineering, Lund University

    Author : Anette Munch Elmér; Lund University.; Lunds universitet.; [2005]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Polymerteknik; Polymer technology; biopolymers; conductivity measurements; in-situ UV-polymerisation; solution casting; poly methyl methacrylate ; vinylidene fluoride copolymers; poly ethylene carbonate-co-ethylene oxide methacrylate; PEG methacrylate macromonomers; heterogeneous polymer blends; polymer electrolyte membranes; lithium salt containing gels;

    Abstract : There is a growing need for multifunctional polymeric materials for the development of several important energy conversion technologies. For example, the polymer electrolyte is a key component in lithium polymer batteries. The basic functions of this electrolyte are to efficiently conduct the lithium ions and physically separate the electrodes. READ MORE