Development of novel pem membrane and multiphase cfd. Pem fuel cell stack sealing using silicone elastomers. The book provides a systematic and profound account of scientific challenges in fuel cell research. Extraction of the energy proton exchange membrane fuel. Selforganization in catalyst layers of polymer electrolyte fuel cells kourosh malek, michael eikerling, qianpu wang, titichai navessin, and zhongsheng liu institute for fuel cell innovation, national research council of canada, 4250 wesbrook mall, vancouver, bc v6t 1w5, canada, and department of chemistry. A global reactor engineering approach is applied to pem fuel cells to identify the essential physics that govern the dynamics in pem fuel cells. However, in a fuel cell the electrodes are not consumed. Afc made possible the generation of electricity from hydrogen. Download it once and read it on your kindle device, pc, phones or tablets. Pdf polymer electrolyte membrane fuel cells are the key to sustainable energy. Use features like bookmarks, note taking and highlighting while reading polymers for pem fuel cells wiley series on polymer engineering and. Nasa used such fuel cells in the 1960s to power apollo space missions. The methods in the book are essential to researchers and scientists in the field and will lead to further development in polymer and fuel cell technologies. This book is the first book exclusively dedicated on fuel cell membranes.
Polymers for pem fuel cells wiley series on polymer engineering and technology book 10 kindle edition by pu, hongting. The major approach to reducing the cost of fcs, which is crucial for the widespread acceptance of fcs as energy sources for various practical applications, is reducing the cost of the membrane. Alkaline fuel cell is an electrochemical device that can convert the chemical energy of h 2 directly into an electrical current. The roles of ion aggregation and phase separation in vinylic and aromaticbased polymers in proton conductivity and water transport are described. Bacon, thus they predate pem fuel cells and represent one of the oldest fuel cell types. Polymer electrolyte membrane pem fuel cells, automotive. The net power of this system is 10kw and the pick power is 14 kw. The proton exchange membrane fuel cell pemfc uses a waterbased, acidic polymer membrane as its electrolyte, with platinumbased electrodes. Polymer membranes for fuel cells javaid zaidi springer. Understanding the factors that control microstructure formation in catalyst layers cls of polymer electrolyte fuel cells is of vital importance for improving the operation of these cells. Considering the facts that water is generated within the fuel cell, and is often provided as external humidification, these pose a significant concern for low temperature operation. Pem fuel cells use a solid polymer membrane a thin plastic film as the electrolyte.
To develop a novel composite polymer electrolyte membrane pem using uniquely designed hydrocarbonbased aromatic sulfonated polymers and reinforcement technology to meet the doe durability, cost and performance targets for pem fuel cell vehicles and provide enhanced characteristics over stateoftheart pems. Polymers for pem fuel cells by hongting pu overdrive. Request pdf polymers for pem fuel cells including chemical, synthetic, and crossdisciplinary approaches. An overview of polymer electrolyte membranes for fuel cell. Selforganization in catalyst layers of polymer electrolyte. C2 coal utilization laboratory, university park pa 16802 objectives. Proton conducting membranes based on sulfonated aromatic polymers for pem fuel cells. Increasing demand for unconventional sources of energy is one of the key factors driving the growth. This is their essential function when incorporated into a membrane electrode assembly mea of a protonexchange membrane fuel cell or of a.
New protonconducting fluoropolymer electrolytes for pem fuel. Many use polyaromatic polymers, while others use partially fluorinated polymers. Polymers for pem fuel cells books pics download new books. Novel proton exchange membranes pems were investigated that show potential for operating at higher temperatures in both direct methanol dmfc and h2air pem fuel cells. Anion exchange membranes for alkaline fuel cells polymers. High temperature polymers for proton exchange membrane.
The need for thermally stable polymers immediately suggests the possibility of. Click read now pdf download, get it for free, register 100% easily. Pdf polymer electrolyte membrane fuel cells for sustainable. Polymers 2012, 4 915 figure 1 compares and illustrates the prominent features six types of fuel cells 1.
Through the work of thomas grubb and leonard niedrach, they invented and developed the first polymer electrolyte membrane pem fuel cell. Their distinguishing features include lower temperaturepressure ranges 50 to. Polymers for pem fuel cells books pics download new. Pem fuel cells use a solid polymer as an electrolyte and porous carbon electrodes containing a platinum or platinum alloy catalyst. Materials issues in polymer electrolyte membrane fuel cells. This work seeks to understand whether onboard fuel cell systems are technically feasible, and, if so, if they offer a performance advantage for the airplane as a. Polymers application in proton exchange membranes for fuel. The need for thermally stable polymers immediately suggests the possibility of heterocyclic polymers bearing appropriate ion conducting sites. Pem fuel cells use a proton conductive polymer membrane as electrolyte. Madeleine odgaard, in advanced fluoridebased materials for energy conversion, 2015. Early alkaline fuel cells operated with h 2 as the fuel at a temperature between 50 and 200oc and employed a liquid electrolyte e. Growing privatepublic partnerships and reduced environmental impact are other factors anticipated to propel the demand.
Polymer electrolyte fuel cell pefc has been receiving much attention on account of its attractive properties, low temperature operation, and high power density, as a power sources for transport, residential, and portable applications. As a rising multidisciplinary research field, polymers for pem fuel cells have attracted. This polymer is permeable to protons when it is saturated with water, but it does not conduct electrons. Most of the papers are focused on development of anion conducting polymers for aems 2000 2005 2010 2015 2020 year dario r. The relentless increase in the demand for useable power from energyhungry economies continues to drive energymaterial related research. Proton exchange membrane fuel cells for electrical power.
High temperature polymers for proton exchange membrane fuel cells. Welcome to friendly what are you looking for book polymers for pem fuel cells. Review of advanced materials for proton exchange membrane. New protonconducting fluoropolymer electrolytes for pem. Layer for pem fuel cell using a novel 3d printing technique and. Due to the relatively low temperatures and the use of. Chemical structure, polymer microstructure, sequence distribution, and morphology of acidbearing polymers are important factors in the design of polymer electrolyte membranes pems for fuel cells. Pem fuel cell stack sealing using silicone elastomers pdf. The center of pemfc is the polymer electrolyte membrane, as it defines the properties needed for other components of fuel cell and is the key component of a fuel cell system. This control strategy will be tested using a ballard 4. Protonexchange membrane fuel cells, also known as polymer electrolyte membrane pem fuel cells pemfc, are a type of fuel cell being developed mainly for transport applications, as well as for stationary fuel cell applications and portable fuel cell applications. Extraction of the energy proton exchange membrane fuel cells.
Novel nonpfsa proton exchange membrane for fuel cell application. Polymers for pem fuel cells wiley series on polymer engineering and technology by hongting pu including chemical, synthetic, and crossdisciplinary approaches. Use features like bookmarks, note taking and highlighting while reading polymers for pem fuel cells wiley series on polymer engineering and technology book 10. Including chemical, synthetic, and crossdisciplinary approaches. Pem proton exchange membrane fuel cells are lighter, smaller, and more efficient than other types of fuel cell. A fuel cell electrocatalytically generates electricity in a manner analogous to batteries. Proton exchange membrane fuel cells pemfc the reactions at the electrodes are. Hongting pu, polymers for pem fuel cells english isbn. Proton exchange membrane fuel cells pemfc have received attention owing to their low operating temperature and quick startup. Proton exchange membrane fuel cells pemfc the reactions at the electrodes are as follows. You can read all your books for as long as a month for free and will get the latest books notifications. Polymers for pem fuel cells request pdf researchgate. For a pem fuel cell, the electrolyte consists of a polymer membrane that is.
Workshop materials for high temperature pem fuel cells sponsored by. High temperature polymers for proton exchange membrane fuel cells by brian russel einsla abstract novel proton exchange membranes pems were investigated that show potential for operating at higher temperatures in both direct methanol dmfc and h2air pem fuel cells. Pem proton exchange membrane fuel cells are lighter, smaller, and more efficient than other types of. The primary theory is that for a gas of known or desired humidity we can calculate the pressure to operate the fuel cell from the 3d surface map of current density. The introductory chapters bring readers up to date on the urgency and implications of the global energy challenge, the prospects of electrochemical energy conversion technologies, and the thermodynamic and electrochemical principles underlying the operation of polymer electrolyte fuel. Pemfc cells operate at relatively low temperatures below 100 degrees celsius and can tailor electrical output to meet dynamic power requirements. Electrolytes which are used in 10kw fuel cell system are of polymeric type. Furthermore, it elaborates on the synthetic methods used for preparing pems, the current status of fuel cell technology and its application. Pem stands for polymer electrolyte membrane or proton exchange membrane. Mar 21, 2008 chemical structure, polymer microstructure, sequence distribution, and morphology of acidbearing polymers are important factors in the design of polymer electrolyte membranes pems for fuel cells.
Structural and morphological features of acidbearing. Proton exchange membrane fuel cells pemfc jens oluf jensen summer school on materials for the hydrogen society, reykjavik, june 19. A major breakthrough for pemfc started with the invention of a perfluorinated sulfonic acid pfsa membrane, introduced by e. Since the discovery of fuel cells in the nineteenth century, they have been designed for operation with liquid alkaline, acid, and solid oxide ion conducting electrolytes in different temperature ranges to produce electrical power for stationary, portable, and automotive applications. Caton fuel cell performance was obtained as functions of the humidity at the anode and. Among them, pemfc and dmfc offer many advantages such as high efficiency, high energy density, quiet. Reaction engineering of polymer electrolyte membrane fuel. Much research has been carried out to enhance the pefc performance by improving the electrode. Moreover, the application of this system is a distributed generation dg. Fuel cells are being commercialized to provide power to buildings like hospitals and schools, to replace batteries in portable electronic devices, and as replacements for internal combustion engines in vehicles. Polymer electrolyte fuel cells pemfcs are electrochemical devices that efficiently convert chemical energy of the fuel directly into electrical energy.
Fuel cells, as a future potential power source that provide cleanatthepointofuse power offer many advantages such as high efficiency, high energy density, quiet operation, and environmental friendliness. Polymer electrolyte fuel cells pefcs have attracted much interest due to. Reaction engineering of polymer electrolyte membrane fuel cells a new approach to elucidate the operation and control of polymer electrolyte membrane pem fuel cells is being developed. The global fuel cell market size was estimated at usd 10. Novel nonpfsa proton exchange membrane for fuel cell. Polymer electrolyte fuel cell an overview sciencedirect.
Rather, a fuel cell consumes fuel hydrogen for pem fuel cells at the anode and oxygen from the air at the cathode. Here, we employ, for the first time, coarsegrained molecular dynamics simulations to perform a structural analysis of the microphase segregation occurring during the fabrication process of cls. In order to become commercially viable, pemfc bipolar plates must be cheaper, lighter, and more compact. Development of a 10kw pem fuel cell system equipped with.
Investigation of the performance and water transport of a polymer electrolyte membrane pem fuel cell. Water soluble polymers as proton exchange membranes for fuel. Proton exchange membranes pem, such as nafion, currently used in fuel cells, require humidification to maintain proton conductivity using water as delivery media 5,6,7. This system has two polymeric stacks constituting of 65 cells each. Deployed on a commercial airplane, proton exchange membrane fuel cells may offer emissions reductions, thermal efficiency gains, and enable locating the power near the point of use. Fuel cells have high material costs, low power density and short lifetime, which are major barriers to their use. Alkaline fuel cell afc was the first type to be put into practical service, at the start of the twentieth century. Protonexchange membranes are primarily characterized by proton conductivity. Polymer electrolyte membrane pem fuel cellsalso called proton exchange membrane fuel cellsdeliver high power density and offer the advantages of low weight and volume compared with other fuel cells. A protonexchange membrane, or polymerelectrolyte membrane pem, is a semipermeable membrane generally made from ionomers and designed to conduct protons while acting as an electronic insulator and reactant barrier, e.
New protonconducting fluoropolymer electrolytes for pem fuel cells author. Low temperature damage in polymer exchange membrane pem. Advanced materials in polymer electrolyte fuel cells csic. Polymers for pem fuel cells wiley series on polymer. In order to meet automotive targets, pem fuel cells must be able to start, operate, and survive reliably from subfreezing temperatures. Alkaline anion exchange membrane fuel cells aemfc status. Pem fuel cells are low temperature fuel cells that use a solid polymer in the form of a solid phase proton conducting membrane as an electrolyte which eliminate the need to contain corrosive liquids. The scientific community is focused on the development of inexpensive and highperforming membrane materials for proton exchange membrane pem fuel cells fcs. Reaction engineering of polymer electrolyte membrane fuel cells. Water soluble polymers as proton exchange membranes for.