High Temperature Polymer Electrolyte Membrane Fuel Cells
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High Temperature Polymer Electrolyte Membrane Fuel Cells
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Author : Qingfeng Li
language : en
Publisher: Springer
Release Date : 2015-10-15
High Temperature Polymer Electrolyte Membrane Fuel Cells written by Qingfeng Li and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-10-15 with Technology & Engineering categories.
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.
High Temperature Polymer Electrolyte Membrane Fuel Cells
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Author : Christian Siegel
language : en
Publisher: Logos Verlag Berlin GmbH
Release Date : 2015-03-20
High Temperature Polymer Electrolyte Membrane Fuel Cells written by Christian Siegel and has been published by Logos Verlag Berlin GmbH this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-03-20 with Fuel cells categories.
A three-dimensional computational fluid dynamics model of a high temperature polymer electrolyte membrane fuel cell, employing a high temperature stable polybenzimidazole membrane electrode assembly doped with phosphoric acid, was developed and implemented using a commercially available finite element software. Three types of flow-fields were modeled and simulated. Selected simulation results at reference operating conditions were compared to the performance curves and to segmented solid-phase temperature and current density measurements. For the segmented measurements, an inhouse developed prototype cell was designed and manufactured. The segmented cell was successfully operated and the solid-phase temperature and the current density distribution were recorded, evaluated, and discussed. Sequentially scanned segmented electrochemical impedance spectroscopy measurements were performed to qualitatively support the observed trends. These measurements were used to identify and determine the causes of the inhomogeneous current density distributions. An equivalent circuit model was developed, the obtained spectra were analyzed, and the model parameters discussed. This work helps to provide a better understanding of the internal behaviour of a running high temperature polymer electrolyte membrane fuel cell and presents valuable data for modeling and simulation. For large fuel cells and complete fuel cell stacks in particular, well designed anode and cathode inlet and outlet sections are expected to aid in achieving flatter quantities distributions and in preventing hot spots over the membrane electrode assembly area, and to develop proper start-up, shut-down, and tempering concepts.
Recent Advances In High Temperature Pem Fuel Cells
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Author : Sivakumar Pasupathi
language : en
Publisher: Academic Press
Release Date : 2016-09-13
Recent Advances In High Temperature Pem Fuel Cells written by Sivakumar Pasupathi and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-09-13 with Technology & Engineering categories.
Hydrogen and Fuel Cells Primers is a series focused on Energy applications. Its concise volumes present those coming into this broad and multidisciplinary field with the most recent advances in each of its particular topics. They bring together information that has thus far been scattered in many different sources under one single title, which makes them a useful reference for industry professionals, researchers and graduate students, especially those starting in a new topic of research. This volume, Recent Advances in High Temperature PEM Fuel Cells, provides an up-to-date progress of High Temperature Polymer Electrolyte Membrane Fuel Cells (HTPEMFCs), including three critical subjects for this type of fuel cells: Membrane Electrode Assembly (MEA) development, stack development and systems development. The MEA and stack development sections cover the recent advances in this area and highlight the areas in most need of improvement. The systems development section focuses on stationary systems, mainly Combined Heat and Power (CHP), based on HTPEMFCs. Finally the conclusions summarize the recent advances of HTPEMFCs in all these areas and provide some insights for future developments. Prof. Bruno G. Pollet, Series Editor Presents the most current knowledge in membrane electrode assembly, stack, and systems development for HTPEMFCs Highlights the areas that need improvement in electrode assembly and stack development Examines stationary high temperature PEMFC systems, including CHP
Polymer Membranes For Fuel Cells
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Author : Javaid Zaidi
language : en
Publisher: Springer Science & Business Media
Release Date : 2010-07-15
Polymer Membranes For Fuel Cells written by Javaid Zaidi and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-07-15 with Science categories.
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.
Characterization Of The Cathode Behavior In A High Temperature Polymer Electrolyte Membrane Fuel Cell
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Author : Ashish Ashok Kamat
language : en
Publisher:
Release Date : 2011
Characterization Of The Cathode Behavior In A High Temperature Polymer Electrolyte Membrane Fuel Cell written by Ashish Ashok Kamat and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.
Pem Fuel Cells
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Author : Gurbinder Kaur
language : en
Publisher: Elsevier
Release Date : 2021-11-16
Pem Fuel Cells written by Gurbinder Kaur and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-11-16 with Science categories.
PEM Fuel Cells: Fundamentals, Advanced Technologies, and Practical Application provides a comprehensive introduction to the principles of PEM fuel cell, their working condition and application, and the latest breakthroughs and challenges for fuel cell technology. Each chapter follows a systematic and consistent structure with clear illustrations and diagrams for easy understanding. The opening chapters address the basics of PEM technology; stacking and membrane electrode assembly for PEM, degradation mechanisms of electrocatalysts, platinum dissolution and redeposition, carbon-support corrosion, bipolar plates and carbon nanotubes for the PEM, and gas diffusion layers. Thermodynamics, operating conditions, and electrochemistry address fuel cell efficiency and the fundamental workings of the PEM. Instruments and techniques for testing and diagnosis are then presented alongside practical tests. Dedicated chapters explain how to use MATLAB and COMSOL to conduct simulation and modeling of catalysts, gas diffusion layers, assembly, and membrane. Degradation and failure modes are discussed in detail, providing strategies and protocols for mitigation. High-temperature PEMs are also examined, as are the fundamentals of EIS. Critically, the environmental impact and life cycle of the production and storage of hydrogen are addressed, as are the risk and durability issues of PEMFC technology. Dedicated chapters are presented on the economics and commercialization of PEMFCs, including discussion of installation costs, initial capital costs, and the regulatory frameworks; apart from this, there is a separate chapter on their application to the automotive industry. Finally, future challenges and applications are considered. PEM Fuel Cells: Fundamentals, Advanced Technologies, and Practical Application provides an in-depth and comprehensive reference on every aspect of PEM fuel cells fundamentals, ideal for researchers, graduates, and students. Presents the fundamentals of PEM fuel cell technology, electrolytes, membranes, modeling, conductivity, recent trends, and future applications Addresses commercialization, public policy, and the environmental impacts of PEMFC in dedicated chapters Presents state-of-the-art PEMFC research alongside the underlying concepts
Design Methodology Science And Technology To Manufacture High Temperature Polymer Electrolyte Membranes For Fuel Cells
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Author : Tequila A. L. Harris
language : en
Publisher:
Release Date : 2006
Design Methodology Science And Technology To Manufacture High Temperature Polymer Electrolyte Membranes For Fuel Cells written by Tequila A. L. Harris and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Proton exchange membrane fuel cells categories.
According to the Department of Energy (DOE), there exist many challenges in the commercialization of all fuel cells related to among other things the cost of manufacturing components, of particular interest, polymer electrolyte membranes (PEM). Unfortunately, due to variations in material properties, stringent quality requirements (e.g. dimensional accuracy, no holes), and non-standardized geometry, conventional manufacturing approaches may not be suitable for newer membrane solutions. Implementation of new, innovative, and/or customized conventional manufacturing processes to fuel cell membrane production can offer significant cost reductions, flexibility and repeatability to the fuel cell industry. This research presents a design methodology, the science, and technology to develop a PEM membrane casting system, The unique design methodology to develop a manufacturing casting system entails: 1) receiving input from material developer and end users; 2) gathering chemical, mechanical, and physical fluid properties 3) understanding the material's characteristics and behavior; 4) developing and evaluating system concepts; 5) prototyping and modeling (analytically and numerically) individual components and the system; 6) developing a detailed system design; 7) building and testing the system to compare analytical models to experimental data and; 8) optimizing the hardware and system based on comparison results. Using the aforementioned methodology, a case study involving development of a closed membrane casting system to cast high temperature PEM membrane solutions for an industrial proprietor has been performed. It was found that novel membrane solutions can be made into film uniformly and continuously using slot die casting. The hardware design, which plays a significant role in overall system performance and membrane quality, evolved over the course of conducting this case study. It was found that the internal geometry can be modeled based on flow between infinite parallel plates. In addition, novel features were incorporated to allow for scalability, ease of assembly and disassembly, a unique heating capability, gap retention without localized adjustment, and lip sealing. Prior to manufacturing the slot die, CFD modeling was used to predict the flow behavior where it was shown that the flow would be fully developed and uniform.
Nanocarbons For Energy Conversion Supramolecular Approaches
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Author : Naotoshi Nakashima
language : en
Publisher: Springer
Release Date : 2018-08-13
Nanocarbons For Energy Conversion Supramolecular Approaches written by Naotoshi Nakashima and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-08-13 with Technology & Engineering categories.
This book focuses on nanocarbons (carbon nanotubes, graphene, nanoporous carbon, and carbon black) and related materials for energy conversion, including fuel cells (predominately proton exchange membrane fuel cells [PEMFC]), Li-ion batteries, and supercapacitors. Written by a group of internationally recognized researchers, it offers an in-depth review of the structure, properties, and functions of nanocarbons, and summarizes recent advances in the design, fabrication and characterization of nanocarbon-based catalysts for energy applications. As such, it is an invaluable resource for graduate students, academics and industrial scientists interested in the areas of nanocarbons, energy materials for fuel cells, batteries and supercapacitors as well as materials design, and supramolecular science.
Pem Fuel Cell Testing And Diagnosis
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Author : Jiujun Zhang
language : en
Publisher: Newnes
Release Date : 2013-01-22
Pem Fuel Cell Testing And Diagnosis written by Jiujun Zhang and has been published by Newnes this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-01-22 with Technology & Engineering categories.
PEM Fuel Cell Testing and Diagnosis covers the recent advances in PEM (proton exchange membrane) fuel cell systems, focusing on instruments and techniques for testing and diagnosis, and the application of diagnostic techniques in practical tests and operation. This book is a unique source of electrochemical techniques for researchers, scientists and engineers working in the area of fuel cells. Proton exchange membrane fuel cells are currently considered the most promising clean energy-converting devices for stationary, transportation, and micro-power applications due to their high energy density, high efficiency, and environmental friendliness. To advance research and development of this emerging technology, testing and diagnosis are an essential combined step. This book aids those efforts, addressing effects of humidity, temperature and pressure on fuel cells, degradation and failure analysis, and design and assembly of MEAs, single cells and stacks. Provides fundamental and theoretical principles for PEM fuel cell testing and diagnosis. Comprehensive source for selecting techniques, experimental designs and data analysis Analyzes PEM fuel cell degradation and failure mechanisms, and suggests failure mitigation strategies Provides principles for selecting PEM fuel cell key materials to improve durability
High Temperature Solid Oxide Fuel Cells For The 21st Century
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Author : Kevin Kendall
language : en
Publisher: Elsevier
Release Date : 2015-11-21
High Temperature Solid Oxide Fuel Cells For The 21st Century written by Kevin Kendall and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-11-21 with Technology & Engineering categories.
High-temperature Solid Oxide Fuel Cells, Second Edition, explores the growing interest in fuel cells as a sustainable source of energy. The text brings the topic of green energy front and center, illustrating the need for new books that provide comprehensive and practical information on specific types of fuel cells and their applications. This landmark volume on solid oxide fuel cells contains contributions from experts of international repute, and provides a single source of the latest knowledge on this topic. A single source for all the latest information on solid oxide fuel cells and their applications Illustrates the need for new, more comprehensive books and study on the topic Explores the growing interest in fuel cells as viable, sustainable sources of energy