Download or read book Novel Polymer Electrolyte Membrane Compositions for Electrolysis and Fuel Cell Systems nCarolin Klose written by Carolin Klose and published by . This book was released on 2020* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Novel Polymer Electrolyte Membrane Compositions for Electrolysis and Fuel Cell Systems written by Carolin Klose and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book High Temperature Polymer Electrolyte Membrane Fuel Cells written by Qingfeng Li and published by Springer. This book was released on 2015-10-15 with total page 561 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a comprehensive review of high-temperature polymer electrolyte membrane fuel cells (PEMFCs). PEMFCs are the preferred fuel cells for a variety of applications such as automobiles, cogeneration of heat and power units, emergency power and portable electronics. The first 5 chapters of the book describe rationalization and illustration of approaches to high temperature PEM systems. Chapters 6 - 13 are devoted to fabrication, optimization and characterization of phosphoric acid-doped polybenzimidazole membranes, the very first electrolyte system that has demonstrated the concept of and motivated extensive research activity in the field. The last 11 chapters summarize the state-of-the-art of technological development of high temperature-PEMFCs based on acid doped PBI membranes including catalysts, electrodes, MEAs, bipolar plates, modelling, stacking, diagnostics and applications.

Download or read book Polymer Membranes for Fuel Cells written by Javaid Zaidi and published by Springer Science & Business Media. This book was released on 2010-07-15 with total page 439 pages. Available in PDF, EPUB and Kindle. Book excerpt: From the late-1960’s, perfluorosulfonic acid (PFSAs) ionomers have dominated the PEM fuel cell industry as the membrane material of choice. The “gold standard’ amongst the many variations that exist today has been, and to a great extent still is, DuPont’s Nafion® family of materials. However, there is significant concern in the industry that these materials will not meet the cost, performance, and durability requirementsnecessary to drive commercialization in key market segments – es- cially automotive. Indeed, Honda has already put fuel cell vehicles in the hands of real end users that have home-grown fuel cell stack technology incorporating hydrocarbon-based ionomers. “Polymer Membranes in Fuel Cells” takes an in-depth look at the new chem- tries and membrane technologies that have been developed over the years to address the concerns associated with the materials currently in use. Unlike the PFSAs, which were originally developed for the chlor-alkali industry, the more recent hydrocarbon and composite materials have been developed to meet the specific requirements of PEM Fuel Cells. Having said this, most of the work has been based on derivatives of known polymers, such as poly(ether-ether ketones), to ensure that the critical requirement of low cost is met. More aggressive operational requi- ments have also spurred the development on new materials; for example, the need for operation at higher temperature under low relative humidity has spawned the creation of a plethora of new polymers with potential application in PEM Fuel Cells.

Download or read book Polymer Electrolyte Membrane Fuel Cells and Electrocatalysts written by Richard Esposito and published by . This book was released on 2009 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents current research in fuel cells which are growing in importance as sources of sustainable energy and are forming part of the changing program of energy resources. Fuel cells provide environmentally friendly, clean and highly efficient energy source for power generation. In order to efficiently utilize the energy from fuel cells, a power conditioning system is required. This book describes the converters' basic operating principles and analyzes performance for low-voltage, high-power fuel cell applications. Full three-dimensional, multi-phase, non-isothermal computational fluid dynamics models of planar and novel tubular-shaped air-breathing proton exchange membrane fuel cell are also presented in detail. Research and review of electrocatalysts such as platinum are presented as well.

Download or read book Novel Polymer Electrolyte Nano Composite Membranes for Fuel Cell Applications written by Hadis Zarrin and published by . This book was released on 2014 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fuel cells are electrochemical devices which have been established to lead in the transition to clean energy technology and will become the energy efficient power source of the future. Among all the fuel cell systems, anion exchange membrane fuel cells (AEMFCs) and solid polymer electrolyte membrane fuel cells (PEMFCs) are qualified of achieving high power densities (>l W cm-2) that is required for many applications. Mainly, operation of AEMFCs and PEMFCs at higher temperatures (100-130 °C) would considerably enhance their kinetic performance over the current lower temperature operation technologies. However, due to the type of materials used in each fuel cell there is an associated set of challenges including cost and lifetime which require innovative engineering solutions. One of the important challenges is the fabrication of a cost effective solid electrolyte with high efficiency and durability for both PEMFCs and AEMFCs. Concerning PEMFCs, the state of the art perfluorosulfonic acid (PFSA) membrane (Dupont Nafion®) has high ionic conductivity and good mechanical and chemical stability. However, its high performance and durability is limited to the operational conditions (e.g., temperature, humidity, and pH). In the case of AEMFCs, the dilemma between high ionic conductivity and physicochemical stability for membranes is an important issue, i.e., maximizing one will minimize the other. Thus, for both PEMFCs and AEMFCs, there is a desire to develop a solid electrolyte material capable of maintaining both ion-conductivity and durability at the same time for various operational conditions, especially elevated temperature conditions. The main goal of this research project has been the design and fabrication of novel nano-composite electrolyte membranes that fulfills all the aforementioned requirements for a cost effective solid electrolyte membrane in both PEMFCs and AEMFCs. To accomplish this, different approaches have been effectively integrated and improved by understanding and combination of organic chemistry, electrochemistry, chemical engineering and nano-materials science. Hygroscopic nano-fillers made of titanium oxide nanotubes (TiO2-NT) or graphene oxide (GO) nanosheets were first functionalized with highly ion-conductive groups, and then composed with the commercial membrane or another type of polymeric backbone. The latter was morphologically modified to favor higher electrolyte and water absorption capacity. Combining the benefits of a nano-filler with a morphologically modified polymer electrolyte effectively led to the development of a highly ion-conductive, water-retentive, and durable electrolyte membrane. Electrochemical, thermal, physical and chemical properties of proposed membranes were tested, analyzed and reported by various characterization methods. For PEMFC applications, the developed nano-composite PFSA membranes demonstrated significant ion conductivity and single fuel cell performance improvement (~4 times) over commercial PEM at the humidity of 30 % and temperature of 120 °C. For AEMFCs, the selected nano-filler (e.g., GO) composed with morphologically modified polymer (e.g., porous polybenzimidazole) notably increased both performance and durability of AEMs in harsh alkaline conditions. This work offered promising solid electrolyte replacements synthesized by simple and cost effective techniques, able to meet the fuel cell market demands.

Download or read book Polymer Electrolyte Membrane Fuel Cells written by Xianguo Li and published by John Wiley & Sons Incorporated. This book was released on 2007-07 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covering the latest developments in the field, this book provides an up–to–date summary of PEM fuel cell technology and presents the analysis, modeling and simulation of the electrochemical and transport processes. The book explains issues related to performance enhancement and design optimization and discusses the problems of heat and water management in PEM fuel cells. Key features include: researching fuel cells and designing fuel cell systems, this book is also a comprehensive reference for newcomers to the field and advanced university students devoted entirely to the development and applications of polymer electrolyte membrane (PEM) fuel cells provides an essential guide to performance enhancement and design optimization presents the components and configurations of PEM fuel cells. covers the basic principles of operation including electrochemical reactions, the transport of reactants and water discusses carbon monoxide poisoning and mitigation methods also includes illustrative examples and case studies A must have for researchers involved in developing fuel cell systems and designing fuel cell applications. As well as practicing electrical and automotive engineers; industrialists working to develop new fuel cell systems. A useful reference for senior undergraduate and postgraduate students studying fuel cell modules within courses on automotive, chemical or power engineering.

Download or read book Polymer Electrolyte Membrane Fuel Cells and Electrocatalysts written by Richard Esposito and published by . This book was released on 2009 with total page 459 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book System level Model of a Polymer Electrolyte Membrane Fuel Cell Stack written by Mark J. Blackwelder and published by . This book was released on 2005 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt: