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Dynamic modeling of polymer electrolyte membrane fuel cell stack with 1D and 2D CFD techniquesShan, Yuyao, Choe, Song-Yul. January 2006 (has links) (PDF)
Thesis(M.S.)--Auburn University, 2006. / Abstract. Vita. Includes bibliographic references.
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Monolithic integration of proton exchange membrane microfuel cells /Xiao, Zhiyong. January 2008 (has links)
Thesis (Ph.D.)--Hong Kong University of Science and Technology, 2008. / Includes bibliographical references. Also available in electronic version.
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Synthesis and evaluation of new families of polymer electrolyte membranes for fuel cell applicationsGilbert, Patrick Gerard January 2011 (has links)
Proton Exchange Membrane Fuel Cells (PEMFCs) are widely regarded as the next generation of portable power production devices, with uses ranging from powering automotive vehicles to laptops and smartphones. PEMFCs convert oxygen and hydrogen into water and usable electricity and have no moving parts, meaning that they can reach overall efficiencies of 60%. However current Polymer Electrolyte Membranes only work efficiently below 80 C and at high humidity. At this low temperature, CO poisoning of the Pt electrocatalysts means that only high-grade fuel (low CO concentration ≤ 2 ppm) and high catalyst loading are required. This means that the overall cost of a PEMFC is prohibitively expensive. To dramatically the reduce cost and increase the efficiency of a PEMFC, new membranes are required which work at 120 C, at which point CO poisoning is no longer a dominating issue. In this thesis, the synthesis of novel organic/inorganic hybrid polyurethane Polymer Electrolyte Membranes (PEMs) with covalently bound phosphonic acid moieties (PA) made from cheap source materials have been reported, which, for the first time, demonstrate high conductivities at high temperatures, for example a PEM made from triethoxysilylpropyl isocyanate, polyethylene glycol, 4,4’-methylene diphenyl diisocyanate and PA displayed a conductivity of 3 10-2 S cm-1 at 120 C and 100% RH. The membranes also display good mechanical, thermal and chemical stability making them ideal candidate PEMs for the use in PEMFCs. However further work needs to be done to reduce the thickness of the membranes from their current thickness of 200 m to just 20-30 m, which would dramatically increase their efficiency when used in a PEMFC, by reducing the Area Specific Resistance and increasing the output (usable) power.
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Synthesis and purity characterization of high purtiy 3,3ʹ-disulfonated-4,4ʹ-dichlorodiphenyl sulfone (SDCDPS) monomer by ion chromatographyBruce, Ruey K., January 2009 (has links)
Thesis (M.S.)--Ohio State University, 2009. / Title from first page of PDF file. Includes vita. Includes bibliographical references (p. 18).
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Dynamic modeling, control and optimization of PEM fuel cell system for automotive and power system applicationsNa, Woon Ki. January 2008 (has links)
Thesis (Ph.D.) -- University of Texas at Arlington, 2008.
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Thermal conductivity measurement of gas diffusion layer used in PEMFC /Radhakrishnan, Arjun. January 2009 (has links)
Thesis (M.S.)--Rochester Institute of Technology, 2009. / Typescript. Includes bibliographical references (leaves 63-65).
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Dynamic modeling of two-phase heat and vapor transfer characteristics in a gas-to-gas membrane humidifier for use in automotive PEM fuel cellsAlan, Dunlavy. Choe, Song-Yul. January 2009 (has links)
Thesis--Auburn University, 2009. / Abstract. Includes bibliographic references (p.127-130).
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PEM fuel cell catalyst degradation mechanism and mathematical modelingBi, Wu. January 2008 (has links)
Thesis (Ph.D)--Chemical Engineering, Georgia Institute of Technology, 2008. / Committee Chair: Fuller, Thomas; Committee Co-Chair: Deng, Yulin; Committee Member: Gallivan, Martha; Committee Member: Kohl, Paul; Committee Member: Singh, Preet. Part of the SMARTech Electronic Thesis and Dissertation Collection.
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Fabrication of aligned carbon nanotubes layer and interfacing with Nafion membrane for potential application in fuel cellsChan, Wai-hung, 陳偉雄 January 2009 (has links)
published_or_final_version / Mechanical Engineering / Master / Master of Philosophy
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The development and characterisation of microfabricated polymer electrolyte membrane fuel cellsSombatmankhong, Korakot January 2012 (has links)
No description available.
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