Search for dissertations about: "high temperature PEM"

Showing result 1 - 5 of 7 swedish dissertations containing the words high temperature PEM.

2. 1. Materials Reliability in PEM Fuel Cells

   Author : Live Mølmen; Peter Leisner; Ulf Jansson; Jönköping University; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fuel cell; PEMFC; Bipolar plate; Catalyst; Electrodeposition; Corrosion; Stainless steel; Accelerated stress tests; bränsleceller; PEM; bipolära plattor; katalysator; elektroplätering; korrosion; accelererad testning;

   Abstract : As part of the global work towards reducing CO2 emissions, all vehicles needs to be electrified, or fueled by green fuels. Batteries have already revolutionised the car market, but fuel cells are believed to be a key energy conversion system to be able to electrify also heavy duty vehicles. READ MORE

4. 2. 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

5. 3. 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

6. 4. Development of Methanol-Reforming Catalysts for Fuel Cell Vehicles

   Author : Johan Agrell; KTH; []
   Keywords : PEM fuel cells; hydrogen; methanol; reforming; oxidation; reaction pathways; carbon monoxide;

   Abstract : Vehicles powered by proton exchange membrane (PEM) fuelcells are approaching commercialisation. Being inherently cleanand efficient sources of power, fuel cells constitute asustainable alternative to internal combustion engines to meetfuture low-emission legislation. READ MORE

7. 5. Structure, interactions and functionality in novel electrolyte materials for fuel cell applications

   Author : Anna Martinelli; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; proton conductivity; ionic liquids; Polymer electrolyte membrane PEM ; fuel cell; vibrational spectroscopy;

   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