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 45 for “"Fuel Cell Technology"”.
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Evaluation of micro solid oxide fuel cell technology
Micro solid oxide fuel cells are one type of fuel cell being researched for use in portable electronic devices or applications requiring portable power. This emerging technology combines fuel cell technology with microfabrication technology to achieve a micro sized fuel cell on a small silicon die. …
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Design and Synthesis of Nanomaterials for Surface-Enhanced Raman Scattering, Fuel Cell Technology, and Photonics
In the first part of my dissertation, I developed two approaches for selectively probing the SERS activities of individual hot spots, i.e., experimentally detect the SERS signals only for the molecules that are trapped within the hot-spot region in individual Ag nanoparticle dimers. Then, I …
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Evaluation of nested and parallel real options : case study of Ford's investment in fuel cell technology
… investment in the research and development of fuel cells for automotive applications. -- The second adopts a more global view and looks at the investment as buying a portfolio of options. Each option is relative to a specific application of the technology. The suggested methodology was applied …
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Facilitating, understanding, and controlling the oxygen reduction reaction for fuel cell technology using (1) laccase-inspired tricopper molecular catalysts, (2) a high temperature and pressure reaction vessel, and (3) a hybrid bilayer membrane electrochemical platform
The objectives of my thesis were to investigate three major facets of the oxygen reduction reaction (ORR: O2 + 4 H+ + 4 e– → 2 H2O). First, I developed new tri-copper catalysts for the ORR with a specific focus on the active site present in multi-copper oxidases, which are the most active enzymes …
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Digging Deeper than Platinum: South Africa's Participation in an Emergent Fuel Cell Industry
… provides a unique opportunity for an emergent fuel cell industry. The innovative technology’s reliance on platinum has sparked interest in the mining sector, promoting the clean energy-producing devices in their own operations. This research focuses upon contemporary structures of racial …
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Power management of a 1kW HTPEMFC based CHP system
There is a growing interest in fuel cell technology for portable, stationary and transportation applications. This is driven by the need for a greener and more fuel efficient energy generation source. Fuel cells are electrochemical energy generating devices, which require natural gas for the …
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Cold-start effects on performance and efficiency for vehicle fuel cell systems
… academia and industry have been pursuing fuel cell technology as an alternative to current power generating technologies. The automotive industry has targeted fuel cell technology as a potential alternative to internal combustion engines. The goal of this research is to understand and …
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Water Management in the PEM Fuel Cell by Incorporating a Novel Siloxane Polymer in the Electrode Layer
… the water issue present in Nafion¿¿-based PEM fuel cells operating at low relative humidity conditions by employing a hydrophilic substance COMP-1 in the electrode layer. This modified electrode was hypothesized to prevent the cell from dehydrating by retaining water in the catalyst layer. The …
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New technoloogy in a changing electric power sector : market penetration strategies for fuel cells
Fuel cells are a promising new technology with the potential to benefit society through high energy conversion efficiencies, low environmental impact, and ability to deliver high quality electricity. After decades of development, the technology is on the verge of commercialization. However, fuel …
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Development and Evaluation of a Test Apparatus for Fuel Cells
… of a test apparatus for proton exchange membrane fuel cells is presented. The design of the prototype device is provided in detail along with a description of the apparatus. The evaluation of the functionality and effectiveness of the device included measurement of a polarization curve for a …
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Exploration of the Structure and Catalytic Activity of Modified Platinum Substrates
In recent years, fuel cell technology has become an intense focus of the energy research community as a potentially viable alternative to emissions-producing devices. Both methanol and formic acid are promising fuels for this type of technology; however, to maintain catalytic efficiency and purity, …
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Synthesis and Electrocatalytic Properties of Structure Engineered First-Row Transition Metal Derivatives
… a sustainable energy chain can be achieved. Fuel cell technology offers a highly efficient way of converting chemical energy from a fuel into electricity through an electrochemical reaction. Fuel cells are expected to be one of the mainstream energy conversion devices for many applications …
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Valuing innovative technology R&D as a real option : application to fuel cell vehicles
… real option valuation techniques for innovative technology investment. Treating the fuel cell R&D investment as a real option for General Motor's light passenger vehicle fleet, the thesis presents a 3-step approach to value the R&D and its influence on the fleet value, in which the uncertainties …
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Quantitative analysis of alternative transportation under environmental constraints
… in transportation emissions with current technology, thus the interest in technological options that would make it economic to reduce emissions. The US Federal government has been particularly focused on developing fuel cell technology for vehicles that, when powered by hydrogen, would …
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Distributed Generation Reformer and Fuel Cell System Modeling and Reformer Catalyst Layer Optimization
… a diesel-fed steam reformer and solid oxide fuel cell stack system Honeywell UniSim® Design Suites model and a two-dimensional diesel-fed steam reformer ANSYS Fluent model. The performance of the reformer and fuel cell system was compared to the performance of diesel generators in Canadian …
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The effects of chemical pressurization on screen electrode fuel cells
A large amount of fuel cell research focuses on porous gas diffusion (PGD) fuel cells which currently produce the best power density. However, this sect of fuel cell technology has many obstacles to overcome before becoming a viable large scale source or power. Nevertheless, alternatives to PGD …
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A comparison of high temperature fuel cells and gas turbines for expansion of the MIT Cogeneration Plant
… endeavored to study the feasibility of using fuel cells as a replacement to these gas turbines. Specifically I examined UTC Power's PureCellTM 200, Siemens Westinghouse's SFC 200, and Fuel Cell Energy's DFC 3000. These three fuel cells represent a range of fuel cell technology available for …
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Free air breathing planar PEM fuel cell design for portable electronics
PEM fuel cell technology is an energy source that can provide several times more energy per unit volume then current lithium ion batteries. However, PEM fuel cells remain to be optimized in volume and mass to create a minimum size for integration into portable electronics. A planar fuel cell design …
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Coupling Treatment Technologies with Bioelectrochemical Systems to Optimize Resource Recovery from Wastewater
… nutrients. Two common types of BES are microbial fuel cells (MFCs) and microbial electrolysis cells (MECs). However, shortcomings including relatively low energy production and high material costs oftentimes deter justification of BES implementation over conventional methods. Other processes and …
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BARDS analysis of real-time H2 and O2 gas evolution during the total water splitting of an aqueous electrolyte
Hydrogen fuel cell technology has the potential for integration with renewable energy sources to produce electricity without the need for fossil fuels and thus reducing greenhouse gas emissions. A downside to the use of fuel cells is the electrodes used in the production of hydrogen gas are …
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