The Experts below are selected from a list of 338160 Experts worldwide ranked by ideXlab platform
Frank C. Walsh - One of the best experts on this subject based on the ideXlab platform.
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Sodium borohydride Fuel Cells
2009Co-Authors: Carlos Ponce De Leon, Frank C. WalshAbstract:Fuel Cells utilizing the direct and indirect oxidation of borohydride ions have been described. Direct borohydride Fuel Cells are inherently more efficient than IBFCs; the DBFCs can produce energy densities comparable to those of methanol and oxygen–hydrogen Fuel Cells. The DBFC still presents a number of technical challenges such as borohydride ion crossover and the need for more selective anode materials and improved anionic membranes. The IBFCs use the well-studied MEA that is fed with high-purity hydrogen produced from the efficient hydrolysis of sodium borohydride. The main problems in this cell are removal of borohydride oxidation products, reuse of catalyst, and heat and water management
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Fuel Cells – EXPLORATORY Fuel Cells | Sodium Borohydride Fuel Cells
Encyclopedia of Electrochemical Power Sources, 2009Co-Authors: C. Ponce De León, Frank C. WalshAbstract:The borohydride ion can be oxidized directly at an anode surface, providing a higher energy density than that can be achieved by using hydrogen as the Fuel. Alternatively, hydrogen contained in the borohydride ion can be catalytically released and fed into a hydrogen–oxygen Fuel cell. Both these approaches, direct and indirect use of borohydride, respectively, have been extensively studied during the last few years. A concise summary of the most important developments is provided. Electrode and membrane materials are considered together with the influence of operating parameters on the performance of direct borohydride Fuel Cells. Catalytic materials for the hydrolysis of borohydride used in indirect borohydride Fuel Cells are also considered. The advances in technology necessary for more widespread application of borohydride Fuel Cells are highlighted.
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Direct borohydride Fuel Cells
Journal of Power Sources, 2006Co-Authors: C. Ponce De León, Frank C. Walsh, Derek Pletcher, Darren J. Browning, J.b. LakemanAbstract:The recent, rapid progress in the development of direct borohydride Fuel Cells is reviewed. Electrochemical reactions are considered together with the importance of operating parameters on cell performance. The advances in technology necessary for a widespread testing and more application of borohydride Fuel Cells are highlighted. A comparison of borohydride and methanol Fuel Cells shows that both system exhibit similar cell voltages, current and power densities despite that methanol Cells operate at higher temperatures. The results are encouraging although more research is necessary, particularly in the synthesis of new electrocatalysts for borohydride oxidation.
C. Ponce De León - One of the best experts on this subject based on the ideXlab platform.
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Fuel Cells – EXPLORATORY Fuel Cells | Sodium Borohydride Fuel Cells
Encyclopedia of Electrochemical Power Sources, 2009Co-Authors: C. Ponce De León, Frank C. WalshAbstract:The borohydride ion can be oxidized directly at an anode surface, providing a higher energy density than that can be achieved by using hydrogen as the Fuel. Alternatively, hydrogen contained in the borohydride ion can be catalytically released and fed into a hydrogen–oxygen Fuel cell. Both these approaches, direct and indirect use of borohydride, respectively, have been extensively studied during the last few years. A concise summary of the most important developments is provided. Electrode and membrane materials are considered together with the influence of operating parameters on the performance of direct borohydride Fuel Cells. Catalytic materials for the hydrolysis of borohydride used in indirect borohydride Fuel Cells are also considered. The advances in technology necessary for more widespread application of borohydride Fuel Cells are highlighted.
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Direct borohydride Fuel Cells
Journal of Power Sources, 2006Co-Authors: C. Ponce De León, Frank C. Walsh, Derek Pletcher, Darren J. Browning, J.b. LakemanAbstract:The recent, rapid progress in the development of direct borohydride Fuel Cells is reviewed. Electrochemical reactions are considered together with the importance of operating parameters on cell performance. The advances in technology necessary for a widespread testing and more application of borohydride Fuel Cells are highlighted. A comparison of borohydride and methanol Fuel Cells shows that both system exhibit similar cell voltages, current and power densities despite that methanol Cells operate at higher temperatures. The results are encouraging although more research is necessary, particularly in the synthesis of new electrocatalysts for borohydride oxidation.
Yushan Yan - One of the best experts on this subject based on the ideXlab platform.
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Materials for Low-Temperature Fuel Cells - Materials for low-temperature Fuel Cells
2014Co-Authors: Bradley Paul Ladewig, San P. Jiang, Yushan YanAbstract:KEY MATERIALS FOR LOW-TEMPERATURE Fuel Cells: AN INTRODUCTION ALKALINE ANION EXCHANGE MEMBRANE Fuel Cells Fuel Cells PEM Fuel Cell Principles Alkaline Fuel Cells Summary CATALYST SUPPORT MATERIALS FOR PROTON EXCHANGE MEMBRANE Fuel Cells Introduction Current Status of Support Materials and Role of Carbon as Support in Fuel Cells Novel Carbon Materials as Electrocatalyst Support for Fuel Cells Conductive Metal Oxide as Support Materials Metal Carbides and Metal Nitrides as Catalyst Supports Conducting Polymer as Support Materials for Fuel Cells Conducting Polymer-Grafted Carbon Materials 3M Nanostructured Thin Film as Support Materials for Fuel Cells Summary and Outlook ANODE CATALYSTS FOR LOW-TEMPERATURE DIRECT ALCOHOL Fuel Cells Introduction Anode Catalysts for Direct Methanol Fuel Cells: Improved Performance of Binary and Ternary Catalysts Anode Catalysts for Direct Ethanol Fuel Cells: Break C-C Bond to Achieve Complete 12-Electron-Transfer Oxidation Anode Catalysts for Direct Polyol Fuel Cells (Ethylene Glycol, Glycerol): Cogenerate Electricity and Valuable Chemicals Based on Anion Exchange Membrane Platform Synthetic Methods of Metal Electrocatalysts Carbon Nanomaterials as Anode Catalyst Support Future Challenges and Opportunities MEMBRANES FOR DIRECT METHANOL Fuel Cells Introduction Basic Principles of Direct Methanol Fuel Cell Operation Membranes for Direct Methanol Fuel Cells Membrane Properties Summary Conclusions HYDROXIDE EXCHANGE MEMBRANES AND IONOMERS Introduction Requirements Fabrications and Categories Structure and Properties of Cationic Functional Group Structure and Properties of Polymer Main Chain Structure and Properties of Chemical Cross-Linking Prospective MATERIALS FOR MICROBIAL Fuel Cells Introduction MFC Configuration Anode Materials Cathode Separators Outlook BIOELECTROCHEMICAL SYSTEMS Bioelectrochemical Systems and Bioelectrocatalysis On the Nature of Microbial Bioelectrocatalysis Microbial Electron Transfer Mechanisms From Physiology to Technology: Microbial Bioelectrochemical Systems Applicatin Potential of BES Technology Characterization of BESs and Microbial Bioelectrocatalysts Conclusions MATERIALS FOR MICROFLUIDIC Fuel Cells Introduction Fundamentals Membraneless LFFC Designs and the Materials in Use Fuel, Oxidant, and Electrolytes Conclusions PROGRESS IN ELECTROCATALYSTS FOR DIRECT ALCOHOL Fuel Cells Introduction Developing an Effective Method to Prepare Electrocatalysts Electrocatalysts for ORR Electrocatalysts for MOR Electrocatalysts for Ethanol Electrooxidation Conclusions Index
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Materials for High-Temperature Fuel Cells: Jiang/Materials for High-Temperature Fuel Cells - Materials for High-Temperature Fuel Cells: Jiang/Materials for High-Temperature Fuel Cells
2013Co-Authors: San Ping Jiang, Yushan YanAbstract:There are a large number of books available on Fuel Cells; however, the majority are on specific types of Fuel Cells such as solid oxide Fuel Cells, proton exchange membrane Fuel Cells, or on specific technical aspects of Fuel Cells, e.g., the system or stack engineering. Thus, there is a need for a book focused on materials requirements in Fuel Cells. Key Materials in High-Temperature Fuel Cells is a concise source of the most important and key materials and catalysts in high-temperature Fuel Cells with emphasis on the most important solid oxide Fuel Cells. A related book will cover key materials in low-temperature Fuel Cells. The two books form part of the ?Materials for Sustainable Energy & Development? series. Key Materials in High-Temperature Fuel Cells brings together world leaders and experts in this field and provides a lucid description of the materials assessment of Fuel cell technologies. With an emphasis on the technical development and applications of key materials in high-temperature Fuel Cells, this text covers fundamental principles, advancement, challenges, and important current research themes. Topics covered include: advanced anodes for hydrogen and hydrocarbon Fuels; oxide ion conducting materials for electrolytes; metallic interconnect materials of solid oxide Fuel Cells; materials and design for micro-SOFCs; advanced cathodes of solid oxide Fuel Cells; materials and processing for metal-supported solid oxide Fuel Cells; degradation and poisoning issues of electrode materials of solid oxide Fuel Cells, status and challenges in molten carbonate Fuel Cells; and key materials in direct carbon and phosphoric acid Fuel Cells This book is an essential reference source for researchers, engineers and technicians in academia, research institutes and industry working in the fields of Fuel Cells, energy materials, electrochemistry and materials science and engineering
Christophe K Dye - One of the best experts on this subject based on the ideXlab platform.
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Fuel Cells for portable applications
Journal of Power Sources, 2002Co-Authors: Christophe K DyeAbstract:Abstract The prospect of small Fuel Cells replacing batteries in portable equipment is considered in terms of their prospective energy density, technological feasibility, safety and cost. Fuel Cells seem to be best suited to applications where significantly more energy storage is required than at present in portable devices (>20 Wh). Energy requirements (Wh) are likely to increase with the introduction of broadband mobile computing, and Fuel Cells with lightweight Fuel supplies could dramatically increase the amount of energy available in the same volume. However, in contrast to batteries, since the energy source and the energy converter are separated, a Fuel cell system adds complexity and associated safety and reliability issues will need to be carefully assessed for portable applications. However, the prospective commercial market for high energy density power sources is attractive enough to support significant development and accelerate the introduction of small Fuel Cells since battery technology is unlikely to be able to meet the growing energy demands of a mobile workforce.
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Fuel Cells for portable applications
Fuel Cells Bulletin, 2002Co-Authors: Christophe K DyeAbstract:Abstract There is growing interest in the replacement of batteries by Fuel Cells for portable consumer electronics such as cellular phones, laptop computers, digital cameras etc. At first sight, comparisons with batteries based on performance and convenience are encouraging. However, the cost and safety aspects of small Fuel Cells based on conventional electrochemistry will need to be addressed before there is widespread commercialization.
J.b. Lakeman - One of the best experts on this subject based on the ideXlab platform.
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Direct borohydride Fuel Cells
Journal of Power Sources, 2006Co-Authors: C. Ponce De León, Frank C. Walsh, Derek Pletcher, Darren J. Browning, J.b. LakemanAbstract:The recent, rapid progress in the development of direct borohydride Fuel Cells is reviewed. Electrochemical reactions are considered together with the importance of operating parameters on cell performance. The advances in technology necessary for a widespread testing and more application of borohydride Fuel Cells are highlighted. A comparison of borohydride and methanol Fuel Cells shows that both system exhibit similar cell voltages, current and power densities despite that methanol Cells operate at higher temperatures. The results are encouraging although more research is necessary, particularly in the synthesis of new electrocatalysts for borohydride oxidation.
