Search for dissertations about: "Gas Diffusion Electrode"

Showing result 1 - 5 of 15 swedish dissertations containing the words Gas Diffusion Electrode.

  1. 1. Investigations of proton conducting polymers and gas diffusion electrodes in the polymer electrolyte fuel cell

    University dissertation from Stockholm : KTH

    Author : Peter Gode; KTH.; [2005]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Theoretical chemistry; polymer electrolyte fuel cell; proton conducting membrane; porous electrode; gas permeability; degradation; water transport; Teoretisk kemi; NATURAL SCIENCES Chemistry Theoretical chemistry; NATURVETENSKAP Kemi Teoretisk kemi;

    Abstract : Polymer electrolyte fuel cells (PEFC) convert the chemically bound energy in a fuel, e.g. hydrogen, directly into electricity by an electrochemical process. Examples of future applications are energy conversion such as combined heat and power generation (CHP), zero emission vehicles (ZEV) and consumer electronics. READ MORE

  2. 2. Innovations in nanomaterials for proton exchange membrane fuel cells

    University dissertation from Umeå : Umeå University

    Author : Robin Sandström; Umeå universitet.; [2019]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Fuel Cells; Membrane Electrode Assembly; Oxygen Reduction Reaction; Platinum alloy catalyst; Nanoparticles; Gas Diffusion Electrode; Proton Exchange Membrane; Materials Science; materialvetenskap; fasta tillståndets fysik; Solid State Physics;

    Abstract : Hydrogen technologies are rapidly receiving increased attention as it offers a renewable energy alternative to the current petroleum-based fuel infrastructure, considering that continued large-scale use of such fossil fuels will lead to disastrous impacts on our environment. The proton exchange membrane fuel cell should play a significant role in a hydrogen economy since it enables convenient and direct conversion of hydrogen into electricity, thus allowing the use of hydrogen in applications particularly suited for the transportation industry. READ MORE

  3. 3. Flow injection systems for process analytical chemistry

    University dissertation from Umeå : Umeå Universitet

    Author : Ingrid Lukkari; Umeå universitet.; [1995]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Flow injection; Sequential injection; Process analytical chemistry; Multivariate calibration; Sensor injection; Gas-diffusion; Sample clean-up;

    Abstract : Flow injection systems have great potential for sample handling and analysis in process analytical chemistry. The flexibility and versatility of flow injection manifolds can he utilized in specific applications of sample conditioning and analysis. READ MORE

  4. 4. Modeling of Spark to Ignition Transition in Gas Mixtures

    University dissertation from Umeå : Umeå Universitet

    Author : Muhammad Akram; [1996]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Spark ignition; Spark discharge; Fluid dynamics; Physics; Plasma dynamics.; Fysik; Fysicumarkivet A:1996:Akram;

    Abstract : This thesis pertains to the models for studying sparking in chemically inert gases. The models are derived from the basic principles and framework in continuum mechanics. The processes taking place in a spark to flame transition can be segregated into physical and chemical processes. This study is focused on physical processes. READ MORE

  5. 5. Electrochemical properties of alternative polymer electrolytes in fuel cells

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Annika Carlson; KTH.; [2019]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fuel cell; anion exchange membrane; proton exchange membrane; electrode morphology; hydrogen oxidation reaction; water transport; poly phenylene oxide ; cellulose; bränslecell; anjonledande membran; protonledande membran; elektrodstruktur; vätgasoxidation; vattentransport; poly fenylenoxid ; cellulosa; Chemical Engineering; Kemiteknik;

    Abstract : Fuel cells, using hydrogen as energy carrier, allow chemically‑stored energy to be utilized for many applications, including balancing the electrical grid and the propulsion of vehicles. To make the fuel cell technology more accessible and promote a sustainable energy society, this thesis focuses on alternative polymer electrolytes, as they can potentially lead to a lower cost and a more environmentally‑friendly fuel cell. READ MORE