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The Preparation And Characterization Of Sulfonated Poly Ether Ether Ketone And Cellulose Acetate Speek Ca Membrane In Proton Exchange Membrane Fuel Cells Pemfcs By Uv Crosslink Technique
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Book Synopsis The Preparation and Characterization of Sulfonated Poly (Ether Ether Ketone) and Cellulose Acetate (SPEEK-CA) Membrane in Proton Exchange Membrane Fuel Cells (PEMFCs) by UV-Crosslink Technique by : Nordiana Nabilla Bt Ramly
Download or read book The Preparation and Characterization of Sulfonated Poly (Ether Ether Ketone) and Cellulose Acetate (SPEEK-CA) Membrane in Proton Exchange Membrane Fuel Cells (PEMFCs) by UV-Crosslink Technique written by Nordiana Nabilla Bt Ramly and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Recent Trends in Materials Science and Applications by : Jeyasingh Ebenezar
Download or read book Recent Trends in Materials Science and Applications written by Jeyasingh Ebenezar and published by Springer. This book was released on 2017-05-04 with total page 731 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gathers the proceedings of the plenary sessions, invited lectures, and papers presented at the International Conference on Recent Trends in Materials Science and Applications (ICRTMSA-2016). It also features revealing presentations on various aspects of Materials Science, such as nanomaterials, photonic crystal fibers, quantum dots, thin film techniques, crystal growth, spectroscopic procedures, fabrication and characterisation of new materials / compounds with enhanced features, and potential applications in nonlinear optical and electro-optic devices, solar cell device, chemical sensing, biomedical imaging, diagnosis and treatment of cancer, energy storage device etc. This book will be of great interest to beginning and seasoned researchers alike.
Book Synopsis Cross-linked Sulfonated Poly (ether Ether Ketone) Membranes for Fuel Cells and HVAC Systems by : Riccardo Narducci
Download or read book Cross-linked Sulfonated Poly (ether Ether Ketone) Membranes for Fuel Cells and HVAC Systems written by Riccardo Narducci and published by . This book was released on 2024 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Physicochemical and Thermochemical Properties of Sulfonated Poly(etheretherketone) Electrolyte Membranes by : Stephen Rhoden
Download or read book Physicochemical and Thermochemical Properties of Sulfonated Poly(etheretherketone) Electrolyte Membranes written by Stephen Rhoden and published by . This book was released on 2010 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fuel cells have long been seen as an alternative to combustion powered and diesel powered engines and turbines. Production of energy via a fuel cell conversion method can generate up to 60% efficiency in comparison to 30% using a combustion powered engine, with low co-production of harmful side-products. The polymer electrolyte membrane (PEM) adapted for the fuel cell application is one of the main components that determines the overall efficiency. This research project was focused towards novel PEMs, such as sulfonated poly(etheretherketone) or SPEEK, which are cost-efficient and robust with high proton conductivities under hydrated conditions. The degree of sulfonation (DS) of a particular SPEEK polymer determines the proton conducting ability, as well as the long term durability. For SPEEK with high DS, the proton conduction is facile, but the mechanical stability of the polymer decreases almost proportionally. While low DS SPEEK does not have sufficient sulfonic acid density for fast proton conduction in the membrane, the membrane keeps its mechanical integrity under fully saturated conditions. The main purpose of this work was to address both issues encountered with SPEEK sulfonated to low and high DS. The addition of both solid acids and synthetic cross-links were studied to address the main downfalls of the respective SPEEK polymers. Optimization of these techniques led to increased understanding of PEMs and notably better electrochemical performance of these fuel cell materials. Oxo-acids such as tungsten (VI) oxide (WO3) and phosphotungstic acid (PTA) have been identified as candidate materials for creating SPEEK composite membranes. The chemistry of these oxo-acids is well known, with their use as highly acidic catalyst centers adopted for countless homogeneous and heterogeneous, organic and inorganic reactions. Uniform dispersion of WO3 hydrate in SPEEK solution was done by a sol-gel process in which the filler particles were grown in an ionomer solution, cast and allowed to dry. PTA composites were made by adding the solid acid directly to a solution of the ionomer and casting. The latter casting was allowed to dry and Cs- exchanged to stabilize the PTA from dissolution and leaching from the membrane. The chemical and physical properties of these membranes were characterized and evaluated using mainly conductometric and X-ray photoelectron spectroscopic methods. Composite SPEEK/ PTA membranes showed a 50% decrease in PEM resistance under hydrogen fuel cell testing conditions, while SPEEK/ WO3 composites demonstrated a ten-fold increase in the membrane's in-plane proton conductivity. The chemical and physical properties of these composites changed with respect to their synthesis and fabrication procedures. This study will expound upon their relations.
Book Synopsis Development and Characterization of Sulfonated Polyethersulfone Membrane for Proton Exchange Membrane Fuel Cell Application by : Mohd Azzarudin Zailani
Download or read book Development and Characterization of Sulfonated Polyethersulfone Membrane for Proton Exchange Membrane Fuel Cell Application written by Mohd Azzarudin Zailani and published by . This book was released on 2010 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this studies is to develop and characterize sulfonated polyethersulfone membrane (SPES) for Proton Exchange Membrane Fuel Cell application. In the experiment, polyethersulfone were sulfonated with different reaction time before continue making the dope solution. The membranes were tested with water uptake, Differential Scanning Calorimeter (DSC) and Scanning Electron Microscopy (SEM) to analyze the membrane performance. The swelling test result showed that the value of water uptake % were directly proportional to the reaction time of sulfonation. Differential Scanning Calorimeter (DSC) result showed that higher reaction time of sulfonation, the higher of the glass transitions temperature (Tg) and melting temperature (Tm) of the SPES. SPES 6 sample gave the best result compared to the other samples with 63.13°C glass transition temperature and 92.87°C melting temperature. Scanning Electron Microscopy (SEM) showed that the membrane has symmetric structure.
Book Synopsis Ion Exchange Membranes by : Toshikatsu Sata
Download or read book Ion Exchange Membranes written by Toshikatsu Sata and published by Royal Society of Chemistry. This book was released on 2004 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: Various separation membranes have been developed since their discovery over half a century ago, providing numerous benefits and fulfilling many applications in our everyday lives. They lend themselves to techniques ranging from microfiltration and gas separation, to what can be considered as the most advanced technique - ion exchange. This book, aimed at academic researchers, engineers and industrialists, contains a brief history of ion exchange and goes on to explain the preparation, characterization, modification and applications of these important membranes. Discussions include the use of ion exchange in analytical and medical techniques, as well as the development of future applications.
Book Synopsis Epoxy-crosslinked Sulfonated Poly (phenylene) Copolymer Proton Exchange Membranes by :
Download or read book Epoxy-crosslinked Sulfonated Poly (phenylene) Copolymer Proton Exchange Membranes written by and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: An epoxy-crosslinked sulfonated poly(phenylene) copolymer composition used as proton exchange membranes, methods of making the same, and their use as proton exchange membranes (PEM) in hydrogen fuel cells, direct methanol fuel cell, in electrode casting solutions and electrodes, and in sulfur dioxide electrolyzers. These improved membranes are tougher, have higher temperature capability, and lower SO.sub. 2 crossover rates.
Book Synopsis Polymer Electrolyte Fuel Cell Durability by : Felix N. Büchi
Download or read book Polymer Electrolyte Fuel Cell Durability written by Felix N. Büchi and published by Springer Science & Business Media. This book was released on 2009-02-08 with total page 489 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers a significant number of R&D projects, performed mostly after 2000, devoted to the understanding and prevention of performance degradation processes in polymer electrolyte fuel cells (PEFCs). The extent and severity of performance degradation processes in PEFCs were recognized rather gradually. Indeed, the recognition overlapped with a significant number of industrial dem- strations of fuel cell powered vehicles, which would suggest a degree of technology maturity beyond the resaolution of fundamental failure mechanisms. An intriguing question, therefore, is why has there been this apparent delay in addressing fun- mental performance stability requirements. The apparent answer is that testing of the power system under fully realistic operation conditions was one prerequisite for revealing the nature and extent of some key modes of PEFC stack failure. Such modes of failure were not exposed to a similar degree, or not at all, in earlier tests of PEFC stacks which were not performed under fully relevant conditions, parti- larly such tests which did not include multiple on–off and/or high power–low power cycles typical for transportation and mobile power applications of PEFCs. Long-term testing of PEFCs reported in the early 1990s by both Los Alamos National Laboratory and Ballard Power was performed under conditions of c- stant cell voltage, typically near the maximum power point of the PEFC.
Book Synopsis Development and Characterization of Sulfonated Poly (ether Ether Ketone) Membrane for Direct Methanol Fuel Cell Application by : Ahmad Fauzi Ismail
Download or read book Development and Characterization of Sulfonated Poly (ether Ether Ketone) Membrane for Direct Methanol Fuel Cell Application written by Ahmad Fauzi Ismail and published by . This book was released on 2007 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development & Characterization of Sulfonated Polyethersulfone Membrane for Proton Exchange Membrane Fuel Cell Application by : Mohd Aizuddin Hashim
Download or read book Development & Characterization of Sulfonated Polyethersulfone Membrane for Proton Exchange Membrane Fuel Cell Application written by Mohd Aizuddin Hashim and published by . This book was released on 2010 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sulfonation process was used to produce ion exchange polymer from a commercial polyethersulfone. Sulfonations were achieved by varying the degree of sulfonation (DS) in reaction time. Water and methanol uptake analysis showed this SPES6 have the potential to use in proton exchange membrane fuel cell application compared to another membrane. Methanol uptake analysis showed Nafion 117 have no potential to use in direct methanol fuel cell application because the tendency of Nafion to swell is very high. FTIR analysis showed that the peak of sulfonic group was appeared at wavelength 1072 to 1074 cm-1. TGA analysis showed that the range temperature that was assigned to the degradation of the polymer main chain at around 400°C.
Book Synopsis Polymeric Membrane Synthesis, Modification, and Applications by : Chandan Das
Download or read book Polymeric Membrane Synthesis, Modification, and Applications written by Chandan Das and published by CRC Press. This book was released on 2018-10-12 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: Membranes and membrane separation techniques have grown from a simple laboratory tool to an industrial process with considerable technical and commercial impact. The book deals with both the fundamental concepts of preparation, characterization and modification, practical applications along with recent advancements of electro-spun and phase inverted polymeric membranes. Divided into two parts, part one of this book covers the fundamental concepts and practical applications of novel electro-spun membranes while the latter covers basic concepts and further advancements of the conventional phase inverted membranes extensively. Key Features Covers fundamental concepts and practical applications of electro-spun and phase inverted polymeric membranes Includes general properties, characterization, preparation and modification of polymeric membranes Discusses advanced modification of polymeric membranes (functionalization, grafting) using phase inversion process, and effects of solubility parameter and additives on the phase inversion process Reviews electro-spun membranes for biomedical applications, industrial effluents treatment and removal of water contaminants Explores a separate economic analysis section for the discussed membranes
Book Synopsis Development and Characterizaiton of Sulfonated Polyimide Membrane for Proton Exchange Membrane Fuel Cell Applications by : Hai Zheng
Download or read book Development and Characterizaiton of Sulfonated Polyimide Membrane for Proton Exchange Membrane Fuel Cell Applications written by Hai Zheng and published by . This book was released on 2010 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Preparation and Characterization of Composite Proton Exchange Membranes for Fuel Cell Applications by : Jung-Chou Lin
Download or read book Preparation and Characterization of Composite Proton Exchange Membranes for Fuel Cell Applications written by Jung-Chou Lin and published by . This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis of Proton Exchange Membrane Based on Sulfonated Polyphenylsulfone for Fuel Cell Applications by : Swathi Burla
Download or read book Synthesis of Proton Exchange Membrane Based on Sulfonated Polyphenylsulfone for Fuel Cell Applications written by Swathi Burla and published by . This book was released on 2017 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthetic Membranes: by : P.M. Bungay
Download or read book Synthetic Membranes: written by P.M. Bungay and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 735 pages. Available in PDF, EPUB and Kindle. Book excerpt: The chapters in this book are based upon lectures given at the NATO Advanced Study Institute on Synthetic Membranes (June 26-July 8, 1983, Alcabideche, Portugal), which provided an integrated presentation of syn thetic membrane science and technology in three broad areas. Currently available membrane formation mechanisms are reviewed, as well as the manner in which synthesis conditions can be controlled to achieve desired membrane structures. Membrane performance in a specific separa tionprocess involves complex phenomena, the understanding of which re quires a multidisciplinary approach encompassing polymer chemistry, phys ical chemistry, and chemical engineering. Progress toward a global understanding of membrane phenomena is described in chapters on the principles of membrane transport. The chapters on membrane processes and applications highlight both established and emerging membrane processes, and elucidate their myriad applications. It is our hope that this book will be an enduring, comprehensive compen dium of the state of knowledge in the field of synthetic membranes. We have been encouraged in that hope by numerous expressions of interest in the book, coming from a variety of potential users.
Book Synopsis Multi-block Sulfonated Poly(phenylene) Copolymer Proton Exchange Membranes by :
Download or read book Multi-block Sulfonated Poly(phenylene) Copolymer Proton Exchange Membranes written by and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Improved multi-block sulfonated poly(phenylene) copolymer compositions, methods of making the same, and their use as proton exchange membranes (PEM) in hydrogen fuel cells, direct methanol fuel cells, in electrode casting solutions and electrodes. The multi-block architecture has defined, controllable hydrophobic and hydrophilic segments. These improved membranes have better ion transport (proton conductivity) and water swelling properties.
Book Synopsis Development of Structured Polymer Electrolyte Membranes for Fuel Cell Applications by : Jeffrey Gasa
Download or read book Development of Structured Polymer Electrolyte Membranes for Fuel Cell Applications written by Jeffrey Gasa and published by . This book was released on 2006 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
