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Proton Conducting Polymer Membranes
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Book Synopsis Proton Conductors by : Philippe Colomban
Download or read book Proton Conductors written by Philippe Colomban and published by Cambridge University Press. This book was released on 1992-09-25 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gives a comprehensive review of proton conductors, including theory, techniques, the materials themselves and applications.
Book Synopsis Polymer Membranes for Fuel Cells by : Javaid Zaidi
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.
Book Synopsis Proton Conducting Polymer Membranes by : Olivier Savard
Download or read book Proton Conducting Polymer Membranes written by Olivier Savard and published by . This book was released on 2007 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A new synthetic route to prepare the sulfonated monomer ((2,2'-bis(4-sulfobenzyloxy)benzidine), was developed. This and related compounds were characterized by 1H and 13C NMR, FTIR and EA. This new synthetic route provides access to a variety of new sulfonated monomers and polymers, which in turn facilitates studies of structure-property relationships of proton conducting membranes. A series of novel membranes were prepared from the sulfonated polymer. This series of novel sulfonated polyimide membranes possesses higher hydrolytic stability than those prepared from polyimides in which the sulfonate groups are attached directly to the polyimide main chain, yet their proton conductivity is similar. The polymers were also characterized by nuclear magnetic resonance, differential scanning calorimetry, thermogravimetric analysis and in a fuel cell.
Book Synopsis Proton Conducting Membrane Fuel Cells II by : Shimshon Gottesfeld
Download or read book Proton Conducting Membrane Fuel Cells II written by Shimshon Gottesfeld and published by The Electrochemical Society. This book was released on 1999 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Impedance Spectroscopy by : Evgenij Barsoukov
Download or read book Impedance Spectroscopy written by Evgenij Barsoukov and published by John Wiley & Sons. This book was released on 2018-03-22 with total page 1088 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Essential Reference for the Field, Featuring Protocols, Analysis, Fundamentals, and the Latest Advances Impedance Spectroscopy: Theory, Experiment, and Applications provides a comprehensive reference for graduate students, researchers, and engineers working in electrochemistry, physical chemistry, and physics. Covering both fundamentals concepts and practical applications, this unique reference provides a level of understanding that allows immediate use of impedance spectroscopy methods. Step-by-step experiment protocols with analysis guidance lend immediate relevance to general principles, while extensive figures and equations aid in the understanding of complex concepts. Detailed discussion includes the best measurement methods and identifying sources of error, and theoretical considerations for modeling, equivalent circuits, and equations in the complex domain are provided for most subjects under investigation. Written by a team of expert contributors, this book provides a clear understanding of impedance spectroscopy in general as well as the essential skills needed to use it in specific applications. Extensively updated to reflect the field’s latest advances, this new Third Edition: Incorporates the latest research, and provides coverage of new areas in which impedance spectroscopy is gaining importance Discusses the application of impedance spectroscopy to viscoelastic rubbery materials and biological systems Explores impedance spectroscopy applications in electrochemistry, semiconductors, solid electrolytes, corrosion, solid state devices, and electrochemical power sources Examines both the theoretical and practical aspects, and discusses when impedance spectroscopy is and is not the appropriate solution to an analysis problem Researchers and engineers will find value in the immediate practicality, while students will appreciate the hands-on approach to impedance spectroscopy methods. Retaining the reputation it has gained over years as a primary reference, Impedance Spectroscopy: Theory, Experiment, and Applications once again present a comprehensive reference reflecting the current state of the field.
Book Synopsis On the Development of Proton Conducting Polymer Membranes for Hydrogen and Methanol Fuel Cells by :
Download or read book On the Development of Proton Conducting Polymer Membranes for Hydrogen and Methanol Fuel Cells written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proton Conducting Polymer Membrane Comprised of 2-acrylamido-2-methylpropanesulfonic Acid by :
Download or read book Proton Conducting Polymer Membrane Comprised of 2-acrylamido-2-methylpropanesulfonic Acid written by and published by . This book was released on 2002 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: In order to identify a proton-conducting polymer membrane suitable for replacing Nafion 117 in direct methanol fuel cells, we prepared a cross-linked copolymer of hydrophilic 2-acrylamido-2-methylpropanesulfonic acid (AMPS) and 2-hydroxyethyl methacrylate (HEMA). Fumed silicas were also added in an attempt to increase the amount of water adsorbed by the membrane and to enhance water retention. Hydrated copolymer membranes adsorbed significantly more water than Nafion% 117, but were no better at retaining water during drying under ambient conditions. Films composed of 4 percent AMPS-96 percent HEMA had a room temperature proton conductivity of 0.029 S cm-1, which increased to 0.06 S cm-1 at 80 C.
Book Synopsis Solid State Proton Conductors by : Philippe Knauth
Download or read book Solid State Proton Conductors written by Philippe Knauth and published by John Wiley & Sons. This book was released on 2012-01-30 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proton conduction can be found in many different solid materials, from organic polymers at room temperature to inorganic oxides at high temperature. Solid state proton conductors are of central interest for many technological innovations, including hydrogen and humidity sensors, membranes for water electrolyzers and, most importantly, for high-efficiency electrochemical energy conversion in fuel cells. Focusing on fundamentals and physico-chemical properties of solid state proton conductors, topics covered include: Morphology and Structure of Solid Acids Diffusion in Solid Proton Conductors by Nuclear Magnetic Resonance Spectroscopy Structure and Diffusivity by Quasielastic Neutron Scattering Broadband Dielectric Spectroscopy Mechanical and Dynamic Mechanical Analysis of Proton-Conducting Polymers Ab initio Modeling of Transport and Structure Perfluorinated Sulfonic Acids Proton-Conducting Aromatic Polymers Inorganic Solid Proton Conductors Uniquely combining both organic (polymeric) and inorganic proton conductors, Solid State Proton Conductors: Properties and Applications in Fuel Cells provides a complete treatment of research on proton-conducting materials.
Book Synopsis Bey Gott und Menschen wol verantwortliche Defension, Noth-Schutz und Gegenwehr by :
Download or read book Bey Gott und Menschen wol verantwortliche Defension, Noth-Schutz und Gegenwehr written by and published by . This book was released on 1633 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis High Temperature Polymer Electrolyte Membrane Fuel Cells by : Qingfeng Li
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.
Book Synopsis Preparation and Characterization of Polysiloxane-Hybrid Proton Conducting Polymer Membranes for Fuel Cells by : 陳韋甫
Download or read book Preparation and Characterization of Polysiloxane-Hybrid Proton Conducting Polymer Membranes for Fuel Cells written by 陳韋甫 and published by . This book was released on 2009 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proton Conducting Membrane Fuel Cells IV by :
Download or read book Proton Conducting Membrane Fuel Cells IV written by and published by The Electrochemical Society. This book was released on 2006 with total page 800 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Investigation of the Relation Between the Properties and the Composition of New Proton Conducting Polymer Membranes by : Susanne Roslev Søgaard
Download or read book An Investigation of the Relation Between the Properties and the Composition of New Proton Conducting Polymer Membranes written by Susanne Roslev Søgaard and published by . This book was released on 2007 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Protic Salt Polymer Membranes written by and published by . This book was released on 2010 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research on proton-containing (protic) salts directly addresses proton conduction at high and low temperatures. This research is unique, because no water is used for proton ionization nor conduction, so the properties of water do not limit proton fuel cells. A protic salt is all that is needed to give rise to ionized proton and to support proton mobility. A protic salt forms when proton transfers from an acid to a base. Protic salts were found to have proton conductivities that are as high as or higher than the best aqueous electrolytes at ambient pressures and comparable temperatures without or with water present. Proton conductivity of the protic salts occurs providing two conditions exist: i) the energy difference is about 0.8 eV between the protic-salt state versus the state in which the acid and base are separated and 2) the chemical constituents rotate freely. The physical state of these proton-conducting salts can be liquid, plastic crystal as well as solid organic and inorganic polymer membranes and their mixtures. Many acids and bases can be used to make a protic salt which allows tailoring of proton conductivity, as well as other properties that affect their use as electrolytes in fuel cells, such as, stability, adsorption on catalysts, environmental impact, etc. During this project, highly proton conducting (~ 0.1S/cm) protic salts were made that are stable under fuel-cell operating conditions and that gave highly efficient fuel cells. The high efficiency is attributed to an improved oxygen electroreduction process on Pt which was found to be virtually reversible in a number of liquid protic salts with low water activity (1% water). Solid flexible non-porous composite membranes, made from inorganic polymer (e.g., 10%indium 90%tin pyrophosphate, ITP) and organic polymer (e.g., polyvinyl pyridinium phosphate, PVPP), were found that give conductivity and fuel cell performances similar to phosphoric acid electrolyte with no need for hydration at ambient pressures. Synthesis and processing of these protic salts into proton-conducting membrane is far from optimized. This protic salt approach has great promise for more improvements in proton conducting membranes for making practical compact, lightweight and inexpensive fuel cells with uses ranging from small electronics (Power = 1 to 100 Watts) to transportation (kiloWatts) to stationary applications (100 kiloWatts). This work clearly showed that proton can be conducted without water using protoic ionic liquids which are Bronsted salts which contain a proton and whose acid and base moieties have pK separated by more than 4 units and less than 14. A key finding is that the base used should be significantly different than the basicity of water or else water displaces the base and an ordinary acid membrane is left behind. This is the case where the acid moiety is sulfonic acid found on perfluorinated polymeric membranes. This PI suggests that a fruitful route for attaining highly proton-conductive stable protic salt membranes is to use the STABLE poly-phosphazene ( -P=N- ) polymer backbone with electrochemically STABLE pendant acid or base units on the phosphorous of poly-phosphazene and with suitable pK so the base is NOT the same pK as water. From this work this should give stable water-free proton conductors which should allow for stable fuel cells with Pt catalysts and possible with non-platinum catalyst for the hydrogen anode and oxygen cathode.
Book Synopsis Proton Conducting Membrane Fuel Cells II by : Shimshon Gottesfeld
Download or read book Proton Conducting Membrane Fuel Cells II written by Shimshon Gottesfeld and published by The Electrochemical Society. This book was released on 1999 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Solid State Proton Conductors by : Philippe Knauth
Download or read book Solid State Proton Conductors written by Philippe Knauth and published by John Wiley & Sons. This book was released on 2012-01-18 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proton conduction can be found in many different solid materials, from organic polymers at room temperature to inorganic oxides at high temperature. Solid state proton conductors are of central interest for many technological innovations, including hydrogen and humidity sensors, membranes for water electrolyzers and, most importantly, for high-efficiency electrochemical energy conversion in fuel cells. Focusing on fundamentals and physico-chemical properties of solid state proton conductors, topics covered include: Morphology and Structure of Solid Acids Diffusion in Solid Proton Conductors by Nuclear Magnetic Resonance Spectroscopy Structure and Diffusivity by Quasielastic Neutron Scattering Broadband Dielectric Spectroscopy Mechanical and Dynamic Mechanical Analysis of Proton-Conducting Polymers Ab initio Modeling of Transport and Structure Perfluorinated Sulfonic Acids Proton-Conducting Aromatic Polymers Inorganic Solid Proton Conductors Uniquely combining both organic (polymeric) and inorganic proton conductors, Solid State Proton Conductors: Properties and Applications in Fuel Cells provides a complete treatment of research on proton-conducting materials.
Book Synopsis Novel Proton Conducting in Free-Standing Coordination Polymer Membranes by : Jiangfeng Lu
Download or read book Novel Proton Conducting in Free-Standing Coordination Polymer Membranes written by Jiangfeng Lu and published by Springer. This book was released on 2024-11-01 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book investigates the development of high proton conduction properties free-standing two-dimensional coordination polymer membranes, with the goal of elucidating the mechanical flexibility, proton conduction behavior, and structural characteristics of these materials under varying environmental conditions. The book evaluates the possible uses of these membranes in flexible electronics and energy technologies and thoroughly examines proton conduction mechanisms using an interdisciplinary research approach that combines chemistry, physics, materials science, and engineering. The most recent scientific developments in novel proton conduction materials are covered, along with preparation and structural characterization procedures and their possible uses in energy, environmental, and electronic technology applications. The research findings presented are extremely important for advancing the creation of clean energy technologies and tackling the problem of climate change. They are also especially relevant given the rising demand for sustainable energy technologies throughout the world.
