Página 1 dos resultados de 88 itens digitais encontrados em 0.006 segundos

‣ Estudo dos efeitos de contaminadores sobre o desempenho das células a combustível de membrana de eletrólito polimérico; Diagnosing the effects contaminants have over polymer electrolyte membrane fuel cells

Lopes, Thiago
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Tese de Doutorado Formato: application/pdf
Publicado em 25/05/2010 Português
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Os componentes do conjunto membrana/eletrodos (MEA) das células a combustível de membrana de eletrólito polimérico/Polymer Electrolyte Membrane Fuel Cells (PEMFC) são sensíveis a impurezas, as quais podem vir do ar, do gás combustível e/ou da degradação dos componentes do módulo. Amônia, sulfeto de hidrogênio e monóxido de carbono são juntos os três principais subprodutos cotaminadores nos processos de geração de hidrogênio por reforma de combustíveis. Estes contaminadores afetam negativamente o desempenho das PEMFCs, assim é importante o entendimento destes efeitos para mitigá-los e introduzir a tecnologia das PEMFCs no mercado consumidor. Desta forma experimentos foram realizados visando diagnosticar os efeitos da amônia e do sulfeto de hidrogênio sobre os componentes do MEA das PEMFCs. Para a contaminação por sulfeto de hidrogênio foi provado, utilizando-se da técnica de cromatografia gasosa e de stripping, que a contaminação ocorre através da interação química e eletroquímica do contaminador com a superfície do catalisador de platina, e que estas interações ocorrem via um processo dissociativo e um processo oxidativos respectivamente. Estes processos de interação geram enxofre adsorvido sobre a superfície da platina...

‣ Polymer electrolyte membrane fuel cells : activation analysis and operating conditions optimization

Silva, Valter Bruno Reis e
Fonte: Universidade do Porto Publicador: Universidade do Porto
Tipo: Tese de Doutorado Formato: XIX, 183 p., 30 cm; application/pdf
Português
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Tese de doutoramento. Engenharia Química e Biológica. Faculdade de Engenharia. Universidade do Porto. 2009

‣ High temperature polymer electrolyte membrane fuel cells : characterization, modeling and materials

Boaventura, Marta Ferreira da Silva
Fonte: Universidade do Porto Publicador: Universidade do Porto
Tipo: Tese de Doutorado Formato: XXVI, 242 p., 25 cm; application/pdf
Português
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Tese de doutoramento. Engenharia Química e Biológica. Universidade do Porto. Faculdade de Engenharia. 2011

‣ Pt-Ru Catalysts supported on mesoporous carbons for polymer electrolyte membrane fuel cells

Calderon, J. C.; Figueiredo, J. L.; Mahata, N.; Pereira, M. F. R.; Fernandes, Vitor R.; Rangel, C. M.; Pastor, E.; Calvillo, L.; Lázaro, M. J.
Fonte: Laboratório Nacional de Energia e Geologia Publicador: Laboratório Nacional de Energia e Geologia
Tipo: Conferência ou Objeto de Conferência
Publicado em 19/04/2010 Português
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Pt-Ru electrocatalysts supported on xerogels and CMK-3 ordered mesoporous carbons were synthesized by reduction with formate ions (SFM method). Some of the carbon supports were chemically treated with HNO3 in order to generate oxygen groups on the surface, while other supports were heat treated. Physical characterization of the catalyst was obtained using X-ray dispersive energy (EDX) and X-ray diffraction (XRD) techniques. Results showed that Pt-Ru catalysts with similar metal content (20%) and atomic ratios (Pt:Ru 1:1) were obtained. The electrochemical activity was studied by cyclic voltammetry and chronoamperometry. Higher methanol oxidation current densities were found for catalyst deposited on chemically treated supports. Electrode preparation and MEA assembly allowed an in-house built direct methanol fuel to be fitted with the synthesized catalysts and supports in order to assess their performance. Cell and reactants were conditioned by a direct methanol test station. Polarisation curves were measured and confirmed data obtained by voltammetry, regarding the effect of heat treatment of the carbon support. Normalised power curves per weight of catalyst are discussed in terms of the significant impact on noble metal loading and attained cell maximum power...

‣ Simulation of a stand-alone residential PEMFC power system with sodium borohydride as hydrogen source

Pinto, P. J. R.; Sousa, T.; Fernandes, Vitor R.; Pinto, A. M. F. R.; Rangel, C. M.
Fonte: Elsevier Publicador: Elsevier
Tipo: Artigo de Revista Científica
Publicado em //2013 Português
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Catalytic hydrolysis of sodium borohydride (NaBH4) has been investigated as a method to generate hydrogen for fuel cell applications. The high purity of the generated hydrogen makes this process a potential source of hydrogen for polymer electrolyte membrane fuel cells (PEMFCs). In this paper, a PEMFC power system employing a NaBH4 hydrogen generator is designed to supply continuous power to residential power applications as stand-alone loads and simulated using Matlab/Simulink software package. The overall system is sized to meet a real end-use load, representative of standard European domestic medium electric energy consumption, over a 1-week period. Supervisory control strategies are proposed to manage the hydrogen generation and storage, and the power flow. Simulation results show that the proposed supervisory control strategies are effective and the NaBH4–PEMFC power system is a technologically feasible solution for stand-alone residential applications.

‣ Al2O3 Disk Supported Si3N4 Hydrogen Purification Membrane for Low Temperature Polymer Electrolyte Membrane Fuel Cells

Liu, Xiaoteng; Christensen, Paul A.; Kelly, Stephen M.; Rocher, Vincent; Scott, Keith
Fonte: MDPI Publicador: MDPI
Tipo: Artigo de Revista Científica
Publicado em 05/12/2013 Português
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Reformate gas, a commonly employed fuel for polymer electrolyte membrane fuel cells (PEMFCs), contains carbon monoxide, which poisons Pt-containing anodes in such devices. A novel, low-cost mesoporous Si3N4 selective gas separation material was tested as a hydrogen clean-up membrane to remove CO from simulated feed gas to single-cell PEMFC, employing Nafion as the polymer electrolyte membrane. Polarization and power density measurements and gas chromatography showed a clear effect of separating the CO from the gas mixture; the performance and durability of the fuel cell was thereby significantly improved.

‣ Materials and characterization techniques for high-temperature polymer electrolyte membrane fuel cells

Zeis, Roswitha
Fonte: Beilstein-Institut Publicador: Beilstein-Institut
Tipo: Artigo de Revista Científica
Publicado em 07/01/2015 Português
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110.95965%
The performance of high-temperature polymer electrolyte membrane fuel cells (HT-PEMFC) is critically dependent on the selection of materials and optimization of individual components. A conventional high-temperature membrane electrode assembly (HT-MEA) primarily consists of a polybenzimidazole (PBI)-type membrane containing phosphoric acid and two gas diffusion electrodes (GDE), the anode and the cathode, attached to the two surfaces of the membrane. This review article provides a survey on the materials implemented in state-of-the-art HT-MEAs. These materials must meet extremely demanding requirements because of the severe operating conditions of HT-PEMFCs. They need to be electrochemically and thermally stable in highly acidic environment. The polymer membranes should exhibit high proton conductivity in low-hydration and even anhydrous states. Of special concern for phosphoric-acid-doped PBI-type membranes is the acid loss and management during operation. The slow oxygen reduction reaction in HT-PEMFCs remains a challenge. Phosphoric acid tends to adsorb onto the surface of the platinum catalyst and therefore hampers the reaction kinetics. Additionally, the binder material plays a key role in regulating the hydrophobicity and hydrophilicity of the catalyst layer. Subsequently...

‣ Engineering particle morphology and assembly for proton conducting fuel cell membrane applications

Liu, Dongxia (1978 - ); Yates, Matthew Z.
Fonte: Universidade de Rochester Publicador: Universidade de Rochester
Tipo: Tese de Doutorado Formato: Illustrations:ill. (some col.); Number of Pages:xxi, 193 leaves
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Thesis (Ph. D.)--University of Rochester. Dept. of Chemical Engineering, 2009.; The development of high performance ion conducting membranes is crucial to the commercialization of polymer electrolyte membrane fuel cells (PEMFCs) and solid oxide fuel cells (SOFCs). This thesis work addresses some of the issues for improving the performance of ion conducting membranes in PEMFCs and SOFCs through engineering membrane microstructures. Electric-field directed particle assembly shows promise as a route to control the structure of polymer composite membranes in PEMFCs. The application of electric fields results in the aggregation of proton conducting particles into particle chains spanning the thickness of composite membranes. The field-induced structure provides improved proton conductivity, selectivity for protons over methanol, and mechanical stability compared to membranes processed without electric field. Hydrothermal deposition is developed as a route to grow electrolyte crystals into membranes (material is hydroxyapatite) with aligned proton conductive pathways that significantly enhance proton transport by eliminating grain boundary resistance. By varying deposition parameters such as reactant concentration, reaction time...

‣ Using polymer electrolyte membrane fuel cells in a hybrid surface ship propulsion plant to increase fuel efficiency

Kroll, Douglas M.
Fonte: Cambridge Massachusetts Institute of Technology Publicador: Cambridge Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 65 p. : ill. (some col.)
Português
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CIVINS; Approved for public release; distribution is unlimited; An increasingly mobile US Navy surface fleet and oil price uncertainty contrast with the Navy's desire to lower the amount of money spent purchasing fuel. Operational restrictions limiting fuel use are temporary and cannot be dependably relied upon. Long term technical research toward improving fuel efficiency is ongoing and includes advanced gas turbines and integrated electric propulsion plants, but these will not be implemented fleet wide in the near future. The focus of this research is to determine if a hybrid fuel cell and gas turbine propulsion plant outweigh the potential ship design disadvantages of physically implementing the system. Based on the potential fuel savings available, the impact on surface ship architecture will be determined by modeling the hybrid fuel cell powered ship and conducting a side by side comparison to one traditionally powered. Another concern that this solution addresses is the trend in the commercial shipping industry of designing more cleanly running propulsion plants.; Contract number: N62271-97-G-0026.; CIVINS; CIVINS

‣ Electrokinetic Structuring of Catalyst Layers for Polymer Electrolyte Fuel Cells

Hoidas, MARK
Fonte: Quens University Publicador: Quens University
Tipo: Tese de Doutorado
Português
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This thesis investigates the possibility of using electrokinetic effects, induced when a colloidal system is subjected to an electric field, to produce deterministic structure in the catalyst layer of polymer electrolyte membrane fuel cells. The susceptibility of the catalyst ink system to electrokinetic effects is clearly demonstrated. A novel apparatus and procedure is developed to allow for the formation of continuous films between two electrode surfaces through solvent evaporation. Characterization of the resulting layers is done through imaging and rotating disc electrode measurements. While the images show some possibility of structure formation, no clear increase in the oxygen reduction rate is observed. Recommendations for extending this work are provided.; Thesis (Master, Chemical Engineering) -- Queen's University, 2010-01-06 17:29:23.27

‣ Micro-Computed Tomography Reconstruction and Analysis of the Porous Transport Layer in Polymer Electrolyte Membrane Fuel Cells

JAMES, JEROME
Fonte: Quens University Publicador: Quens University
Tipo: Tese de Doutorado
Português
Relevância na Pesquisa
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A procedure is presented to analyze select geometric and effective properties of the porous transport layer (PTL) of the polymer electrolyte membrane fuel cell (PEMFC) in com- pressed and uncompressed states using micro-computed X-ray tomography (Micro CT). A method of compression using a novel device design was employed to mimic the non-homogeneous compression conditions found in functioning fuel cells. The process also features open source image processing and CFD analysis through the use of software packages Fiji and OpenFOAM (proprietary software is also used such as Matlab). Tomographic images of a PTL sample in different compressive states are first analyzed by measuring local porosity values in the through-plane and both in- plane directions. The objective of this study was to develop a method for imaging the PTL structure to show directionality within its properties using relatively inexpensive and non-destructional means. Three different PTL types were tested, one without any additives, one with Polytetrafluoroethylene (PTFE) and one with PTFE and a microporous layer (MPL). Non-homogeneous porosity was shown to exist with the highest and least variable porosity values obtained from the in-plane direction that was in-line with the direction of fibres. Porosity values compared well with values obtained from the literature. The profile of the PTL with MPL added was unattainable using this procedure as the resolution of the Micro CT was too low to resolve its pore space. The next stage involved the effective properties analysis which included effective electronic conductivity and effective diffusivity. It was found that the through-plane values for the effective electronic conductivity study were higher than expected. The ratio between through-plane and in-plane was found to be much higher than expected from literature. Lack of sufficient resolution of fibre contacts has been shown to play a role in this discrepancy. These contact problems were shown not too affect measurements of diffusivity in the pore phase. The in-plane direction parallel to the direction of fibres was found to have the highest values of effective transport properties. Effective diffusivity ratios of between 0.1 and 0.37 were found to be reasonable with the limited experimental evidence found in literature. The it was found that the Bruggeman relation for calculating diffusivity and percolation theory by Tomadakis and Sotirchos over predicted the values for diffusion within the PTL and it is suggested that these theories are not suitable for predicting diffusivity for this material.; Thesis (Master...

‣ Development of a Micro-scale Cathode Catalyst Layer Model of Polymer Electrolyte Membrane Fuel Cell

Khakbazbaboli, Mobin
Fonte: Quens University Publicador: Quens University
Tipo: Tese de Doutorado
Português
Relevância na Pesquisa
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In this work, a micro-model of the catalyst layer of polymer electrolyte membrane fuel cell (PEMFC) was developed. The micro-model includes the transport phenomena and the reaction kinetics within a three dimensional micro-structure representing a sample of PEMFC catalyst layer. Proper physical boundary conditions have been described on the surfaces of the sample as well as on the interfaces between the regions through which all constituents are solved in a coupled manner. A four-phase micro-structure of CL was reconstructed, the platinum particles were resolved in the computational grid generation and the governing equations were solved within platinum region. A body-fitted computational mesh was generated for the reconstructed micro-structure of CL. The number of computational cells were optimized based on how close to an analytical sphere the magnitude of the surface area of a sphere can be captured after generating the computational cells. The interfaces with important physical phenomena were more refined than the rest of the interfaces, specially the electrochemically active reaction surface. The computational mesh was checked for a grid independent numerical solution. The Knudsen effects was included by calculating the characteristic length in the pore region. Four different cases of including Knudsen effects were studied. Also...

‣ Interface-designed Membranes with Shape-controlled Patterns for High-performance Polymer Electrolyte Membrane Fuel Cells

Jeon, Yukwon; Kim, Dong Jun; Koh, Jong Kwan; Ji, Yunseong; Kim, Jong Hak; Shul, Yong-Gun
Fonte: Nature Publishing Group Publicador: Nature Publishing Group
Tipo: Artigo de Revista Científica
Publicado em 10/11/2015 Português
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Polymer electrolyte membrane fuel cell is a promising zero-emission power generator for stationary/automotive applications. However, key issues, such as performance and costs, are still remained for an economical commercialization. Here, we fabricated a high-performance membrane electrode assembly (MEA) using an interfacial design based on well-arrayed micro-patterned membranes including circles, squares and hexagons with different sizes, which are produced by a facile elastomeric mold method. The best MEA performance is achieved using patterned Nafion membrane with a circle 2 μm in size, which exhibited a very high power density of 1906 mW/cm2 at 75 °C and Pt loading of 0.4 mg/cm2 with 73% improvement compared to the commercial membrane. The improved performance are attributed to the decreased MEA resistances and increased surface area for higher Pt utilization of over 80%. From these enhanced properties, it is possible to operate at lower Pt loading of 0.2 mg/cm2 with an outstanding performance of 1555 mW/cm2 and even at air/low humidity operations.

‣ Ignition and Front Propagation in Polymer Electrolyte Membrane Fuel Cells

Benziger, J. B.; Chia, E. -S.; De Decker, Y.; Kevrekidis, I. G.
Fonte: Universidade Cornell Publicador: Universidade Cornell
Tipo: Artigo de Revista Científica
Publicado em 26/06/2006 Português
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Water produced in a Polymer Electrolyte Membrane (PEM) fuel cell enhances membrane proton conductivity; this positive feedback loop can lead to current ignition. Using a segmented anode fuel cell we study the effect of gas phase convection and membrane diffusion of water on the spatiotemporal nonlinear dynamics - localized ignition and front propagation - in the cell. Co-current gas flow causes ignition at the cell outlet, and membrane diffusion causes the front to slowly propagate to the inlet; counter-current flow causes ignition in the interior of the cell, with the fronts subsequently spreading towards both inlets. These instabilities critically affect fuel cell performance.

‣ Hybrid proton-conducting membranes for polymer electrolyte fuel cells Phosphomolybdic acid doped poly(2,5-benzimidazole)—(ABPBI-H3PMo12O40)

Gómez-Romero, P.; Asensio, Juan Antonio; Borrós, Salvador
Fonte: Elsevier Publicador: Elsevier
Tipo: Artículo Formato: 579917 bytes; image/jpeg
Português
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The synthesis and characterization of a novel hybrid organic–inorganic material formed by phosphomolybdic acid H3PMo12O40 (PMo12) and poly(2,5-benzimidazole) (ABPBI) is reported. This material, composed of two proton-conducting components, can be cast in the form of membranes from methanesulfonic acid (MSA) solutions. Upon impregnation with phosphoric acid, the hybrid membranes present higher conductivity than the best ABPBI polymer membranes impregnated in the same conditions. These electrolyte membranes are stable up to 200 ◦C, and have a proton conductivity of 3×10−2 S cm−1 at 185 ◦C without humidification. These properties make them very good candidates as membranes for polymer electrolyte membrane fuel cells (PEMFC) at temperatures of 100–200 ◦C.; This work was carried out within the framework of the Xarxa Tem`atica de Piles de Combustible” de la Generalitat de Catalunya, and the “Red de Pilas de Combustible del CSIC” and was partially funded by MCyT (Spain) (MAT2002- 04529-C03).; Peer reviewed

‣ Polymer Electrolyte Fuel Cells Based on Phosphoric Acid-Impregnated Poly(2,5-benzimidazole) Membranes

Asensio, Juan Antonio; Borrós, Salvador; Gómez-Romero, P.
Fonte: Electrochemical Society Publicador: Electrochemical Society
Tipo: Artículo Formato: 579917 bytes; image/jpeg
Português
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Texto completo disponible en la web del autor: http://www.cienciateca.com/ABPBI_JES2004_151_2_A304_A310.pdf; Preparation and characterization of membranes of poly(2,5-benzimidazole) (ABPBI) (as thin as 20 Mm) for polymer electrolyte membrane fuel cells are reported. These membranes were prepared by solution casting and then impregnated in phosphoric acid baths. Their characterization included thermogravimetric analyses, conductivity measurements, Fourier transform infrared spectroscopy, X-ray diffraction, and scanning electron microscopy. These membranes have high thermal stability and good proton conductivity at temperatures up to 200°C (6.2 3 1022 S cm21 at 150°C and 30% relative humidity!, similar to the well-known commercial polybenzimidazole (PBI). ABPBI membrane-electrode assemblies (MEAs) using commercially available E-TEK Pt/C electrodes were tested in H2 /O2 cells, obtaining power densities similar to those of PBI MEAs studied here as reference at temperatures of up to 180°C, humidifying the reactants at room temperature; This work was partially funded by the Ministry of Science and Technology (Spain) MAT2001-1709-C04-01, MAT2002-04529- C03! and was conducted within the framework of the ‘‘Red de Pilas de Combustible del CSIC’’ and ‘‘Xarxa Tema`tica de Piles de Combustible’’ de la Generalitat de Catalunya. We thank the Ministry of Science and Technology (Spain) for a predoctoral fellowship awarded to J.A.A.; Peer reviewed

‣ Microfabricated Fuel Cells as Power Sources for MEMS

Esquivel Bojorquez, Juan Pablo; Porti Pujal, Marc
Fonte: [Barcelona] : Universitat Autònoma de Barcelona, Publicador: [Barcelona] : Universitat Autònoma de Barcelona,
Tipo: Tesis i dissertacions electròniques; info:eu-repo/semantics/doctoralThesis; info:eu-repo/semantics/publishedVersion Formato: application/pdf
Publicado em //2011 Português
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La creciente complejidad de los dispositivos electrónicos portátiles demanda fuentes de energía que cumplan con los requerimientos de entregar una alta densidad de potencia en un tamaño reducido y en muchos casos la posibilidad de lograr una completa integración. En este sentido, un intenso trabajo de investigación se ha enfocado hacia la miniaturización de las fuentes de alimentación en una amplia variedad de tecnologías. Una tendencia similar se ha seguido en el campo de los sistemas micro electromecánicos (MEMS), donde el concepto de sistema inteligente o Smart System ha impulsado el desarrollo de una nueva generación de dispositivos de alimentación, tales como baterías, pilas de combustible o generadores de energía, que en conjunto se conocen como powerMEMS. Entre los diferentes sistemas de generación de energía, las micro pilas de combustible han recibido una especial atención debido a sus particulares características, como son la alta densidad de energía, emisiones no-tóxicas y la posibilidad de eliminar partes móviles simplificando el proceso de fabricación y reduciendo la probabilidad de fallo. Las pilas de combustible de electrolito polimérico (PEMFC) son particularmente atractivas debido a su capacidad de trabajar a temperatura ambiente usando hidrógeno o combustibles líquidos. La posibilidad de funcionar con combustibles líquidos...

‣ Surface modification of a proton exchange membrane and hydrogen storage in a metal hydride for fuel cells

Andrews, Lisa
Fonte: Rochester Instituto de Tecnologia Publicador: Rochester Instituto de Tecnologia
Tipo: Tese de Doutorado
Português
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Interest in fuel cell technology is rising as a result of the need for more affordable and available fuel sources. Proton exchange membrane fuel cells involve the catalysis of a fuel to release protons and electrons. It requires the use of a polymer electrolyte membrane to transfer protons through the cell, while the electrons pass through an external circuit, producing electricity. The surface modification of the polymer, Nafion®, commonly researched as a proton exchange membrane, may improve efficiency of a fuel cell. Surface modification can change the chemistry of the surface of a polymer while maintaining bulk properties. Plasma modification techniques such as microwave discharge of an argon and oxygen gas mixture as well as vacuum-ultraviolet (VUV) photolysis may cause favorable chemical and physical changes on the surface of Nafion for improved fuel cell function. A possible increase in hydrophilicity as a result of microwave discharge experiments may increase proton conductivity. Grafting of acrylic acid from the surface of modified Nafion may decrease the permeation of methanol in a direct methanol fuel cell, a process which can decrease efficiency. Modification of the surface of Nafion samples were carried out using: 1) An indirect Ar/O2 gas mixture plasma investigating the reaction of oxygen radicals with the surface...

‣ Design, synthesis and characterization of the oxygen reduction reaction catalyst for polymer electrolyte membrane fuel cells

Zhang, Yanqi
Fonte: University of Delaware Publicador: University of Delaware
Tipo: Tese de Doutorado
Português
Relevância na Pesquisa
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Yan, Yushan; The sluggish oxygen reduction reaction (ORR) kinetics remains the critical technical barrier to fuel cell technology commercialization. In this thesis, the mechanisms, critical problems, and current research activities are first discussed. Then, with insights gained from literature, two different types of catalysts are explored for the electrochemical reduction of oxygen. Pt/Sc2O3 was synthesized using wet chemistry approach. Analysis under highresolution transmission electron microscopy (HRTEM) revealed the unique nanosheet structure of the Sc2O3. Physical and chemical properties of the catalyst were examined including the morphology, particle size, and chemical bonding strength. Rotating disk electrode (RDE) measurement was carried out to evaluate the activity of the catalyst in an acidic environment. The observed catalyst activity is three times higher than the benchmark Pt/C. Furthermore, durability tests showed the electrochemical surface area (ECSA) losses of the catalyst is only one third of that of Pt/C after 30,000-cycles of durability test. The second catalyst explored iss designed for hydroxide exchange membrane fuel cells. Specifically, a platinum-free nano-Au supported on C was also produced under mild synthesis conditions. Ozone treatment was used to remove the surfactant on the surface of the particle. The activity was determined via RDE in alkaline medium. The specific activity of Au/C is remarkably approaching that of the Pt/C. In addition...

‣ Electrochemical behaviour of ionic liquid functionalized carbon supported Pt-Ru catalysts 

Esteves, M. Alexandra; Sá, A. I. Correia de; Rangel, C. M.
Fonte: Laboratório Nacional de Energia e Geologia Publicador: Laboratório Nacional de Energia e Geologia
Tipo: Conferência ou Objeto de Conferência
Publicado em //2013 Português
Relevância na Pesquisa
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Ionic liquid (IL) functionalized carbon supported nanocatalysts, including platinum-ruthenium catalysts, have been under investigation to achieve better catalytic performance on polymer electrolyte membrane fuel cells. Ionic liquids have particular physical properties, which usually improve the stabillity and dispersion of metal nanosized particles, providing an increase of the electrochemical active surface area. In this work, the synthesis and the electrochemical behaviour of two new ionic liquid functionalizated carbon supported Pt-Ru nanocatalysts is investigated regarding the methanol oxidation reaction. Preliminary obtained results show that IL functionalization of carbon can produce supported catalysts with improved performances depending on the ionic liquid and on the reduction process used to produce the catalyst nanosized particles.