Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 651 for “"fuel cells"”.
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Efforts Towards Micro Fuel Cells
… electrolytes are crucial components in fuel cells. However, the implementation of prevalent polymer electrolyte membranes leads to difficulties in manufacturing the fuel cell structure at the micron scale. Here we show that nanoporous silicon membranes with a thickness around 30∼50 …
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The development of fuel cells
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1943.
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Mixed-feed methanol-oxygen fuel cells.
Massachusetts Institute of Technology. Dept. of Chemical Engineering. Thesis. 1966. Ph.D.
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Modeling of solid oxide fuel cells
… assembly (MEA) model of Solid Oxide Fuel Cell (SOFC)s is developed to investigate the effect of various design and operating conditions on the cell performance and to examine the underlying mechanisms that govern their performance. We review and compare the current modeling …
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Direct Methanol Fuel Cells Using Pure Methanol
<p>Fuel cell technology has attained significant appeal as a form of renewable energy in recent years due to its diverse applications, various fuel types, and lower greenhouse gas emissions. Of the various fuel cell types, direct methanol fuel cells (DMFCs) hold a set of distinct advantages for …
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The competitive advantages of hydrogen fuel cells
… to investigate the competitiveness of hydrogen fuel cells. It was driven by the researcher's interest in the subject and the growing need for energy security. The study combines qualitative and quantitative data from secondary sources like research articles, government publications, reports, and …
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Experimental and numerical analysis of fuel cells
Fuel Cells are attractive power source for use in electronic applications. Physical phenomena (water generation, saturation effect in fuel cell, poisoning, and thermal stress) are studied that governs the operation of a Proton Exchange Membrane Fuel Cell (PEMFC) and Solid Oxide Fuel cell (SOFC). …
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Mathematical modeling of high temperature fuel cells
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1981.
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Metal oxide-oxygen electrodes and fuel cells
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1960.
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Fuel cells : manufacturing strategy for emerging technologies
… a case study for utilizing the model within fuel cell industry. The thesis develops a framework for manufacturing strategy, which includes four phases that lead to product introduction and capacity· expansion for the company to rapidly ramp up production if the product generates high demand. …
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Enzymatic fuel cells via synthetic pathway biotransformation
Enzyme-catalyzed biofuel cells would be a great alternative to current battery technology, as they are clean, safe, and capable of using diverse and abundant renewable biomass with high energy densities, at mild reaction conditions. However, currently, three largest technical challenges for …
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Ni Stability in Anion Exchange Membrane Fuel Cells
… with no greenhouse gas (GHG) emission. Hydrogen fuel cells convert the chemical energy of hydrogen gas into electricity. In 2016, the Paris Climate Agreement was signed with major countries and economic entities, which has created a massive demand for hydrogen fuel cells. However, the …
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Holistic Analysis of Fuel Cells for Residential Application
… energy. The index is used to compare the fuel cell system and the traditional grid system powered by coal fired power plants, for a typical residential unit located in the rural Appalachian region in Ohio.
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CERAMIC MATERIALS USED IN SOLID-OXIDE FUEL CELLS
Solid-oxide fuel cells (SOFC) are electrochemical conversion devices to convert electricity directly from oxidizing a fuel with high efficiency and low emission. . The triple-phase-boundaries (TPBs), where cathode and electrolyte make contact with gas phase, are considered to be the active sites …
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Bioremediation of petroleum hydrocarbons using microbial fuel cells
… (including mankind) largely depend. Microbial fuel cells (MFCs) could be employed in the treatment of these environmental pollutants with concomitant bioelectricity generation. Therefore, the overarching objective of this study was to develop an MFC system for the effective and efficient …
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Catalyst Layer Design in Polymer Membrane Fuel Cells
… to commercializing polymer electrolyte membrane fuel cells is the use of platinum as a catalyst. One way to overcome this obstacle is to replace platinum with non-platinum group metal (non-PGM) catalysts, particularly for the oxygen reduction reaction (ORR) in proton exchange membrane fuel cells …
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Multifunctional oxidation electrocatalysts for direct alkaline fuel cells
… technologies to reduce our dependence on fossil fuels requires the combination of different energy sources such as wind, solar, nuclear as well as new energy storage and powering devices. Amongst these new technologies fuel cells are a promising technology capable of transforming chemical energy …
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Novel conducive alkaline polymer membranes for fuel cells
A series of anion exchange membranes synthesised from poly (2, 6-dimethyl-1, 4-phenylene oxide) (PPO) have been investigated for water electrolysis applications. The prepared membranes were characterised using electrochemical impedance spectroscopy, infrared spectroscopy and thermal gravimetric …
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Ceramic-Based Anodes for Solid Oxide Fuel Cells
<p> Solid oxide fuel cells (SOFCs) are considered one of the most promising technologies for future energy conversion, and can operate on a wide range of fuels including fossil-based hydrocarbon fuels such as petroleum, diesel and natural gas as well as bio-derived hydrocarbons. The primary …
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Understanding of Ammonia Transport In Pem Fuel Cells
… dissertation investigated ammonia (NH3) as a fuel contaminant to the anode in Proton Exchange Membrane Fuel Cells (PEMFCs). Since NH3 is fed to the anode in a gas phase and transferred to the cathode, the effect of a contaminant is distributed through MEA and quite complicated. This study is …
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