Erscheinungsdatum: 18.11.2014, Medium: Taschenbuch, Einband: Kartoniert / Broschiert, Titel: Development of graphite and carbon nanotube filled thermoplastic based bipolar plates for all-vanadium redox flow batteries, Autor: Caglar, Burak, Verlag: Fraunhofer Verlag, Sprache: Englisch, Schlagworte: Chemie // Technik // Werkstoffe // Berufe // Industrie // Nanotechnologie // Technologie // Chemische Industrie // Elektrotechnik // Industrielle Chemie und Chemietechnologie, Rubrik: Chemische Technik, Seiten: 121, Abbildungen: num., mostly col. illus. and tab., Gattung: Dissertation, Reihe: Wissenschaftliche Schriftenreihe des Fraunhofer ICT (Nr. 61), Gewicht: 192 gr, Verkäufer: averdo
Carbon-polymer composite bipolar plate for PEM fuel cell ab 68 € als Taschenbuch: Development characterization and performance evaluation. Aus dem Bereich: Bücher, Wissenschaft, Physik,
Development of graphite and carbon nanotube filled thermoplastic based bipolar plates for all-vanadium redox flow batteries ab 30 € als Taschenbuch: . Aus dem Bereich: Bücher, Wissenschaft, Technik,
Development of graphite and carbon nanotube filled thermoplastic based bipolar plates for all-vanadium redox flow batteries ab 30 EURO
Carbon-polymer composite bipolar plate for PEM fuel cell ab 68 EURO Development characterization and performance evaluation
Considerable efforts are being given to develop commercially viable technologies in order to alleviate the dependence on hydrocarbons as well as to reduce carbon dioxide emission by the use of fossil fuel. The proton exchange membrane fuel cell (PEMFC) has emerged as one of the most promising clean energy technology for residential and automotive applications. The high power density, low operating temperature, convenient fuel supply, longer lifetime, and modularity are the attractive features of PEMFC. This book covers the detailed methodology for development and characterization of composite bipolar plate for PEMFC. It also includes the methodology for synthesis and characterization of graphene. The synthesized monolayer graphene was used as one of the reinforcements for the composite bipolar plate. The state of the art for development and performance evaluation of PEMFC is discussed in detail. The information presented in this book will be helpful to the researchers, academicians, and manufacturers for the development of the composite bipolar plate for PEMFC.
Lead-Acid Batteries for Future Automobiles provides an overview on the innovations that were recently introduced in automotive lead-acid batteries and other aspects of current research. Innovative concepts are presented, some of which aim to make lead-acid technology a candidate for higher levels of powertrain hybridization, namely 48-volt mild or high-volt full hybrids.Lead-acid batteries continue to dominate the market as storage devices for automotive starting and power supply systems, but are facing competition from alternative storage technologies and being challenged by new application requirements, particularly related to new electric vehicle functions and powertrain electrification.Presents an overview of development trends for future automobiles and the demands that they place on the batteryDescribes how to adapt LABs for use in micro and mild hybrid EVs via collector construction and materials, via carbon additives, via new cell construction (bipolar), and via LAB hybrids with Li-ion and supercap systemsSystem integration of LABs into vehicle power-supply and hybridization conceptsShort description of competitive battery technologies
Polymer electrolyte membrane fuel cell (PEMFC) is one of the challenging energy conversion devices for transportation and distributed power generation systems due to its attractive features such as high power density, low operating temperature, minimal emissions, negligible noise, and high efficiency. The success of the PEMFC technology is largely influenced by bipolar plate as well as electrocatalyst support apart from other components. This book covers the detailed methodology for synthesis and characterization of graphene. The synthesized monolayer graphene is investigated as reinforcement into the carbon-polymer composite bipolar plate. The developed optimized composite bipolar plate is evaluated for high temperature PEMFC (HT-PEMFC) application. Moreover, the graphene is used as an electrocatalyst support to enhance the electrochemical activity of PEMFC electrocatalyst. The state of the art information for the development and performance evaluation of PEMFC is discussed in detail. The information presented in this book will be helpful to the researchers, academicians, and manufacturers for the development of efficient bipolar plate and electrocatalyst for PEMFC.
The ongoing trend for high-frequency (HF) applicationsdrives the development of high-speed devices.Therefore, trustworthy device simulations are inevitable for understanding and designing future HF devices.During the last decade, the predictive capabilities of Drift-Diffusion (DD) and Hydrodynamic (HD) transport models turned out to be insufficient for state-of-the-art high-frequency transistors. Consequently, a more physics based transport model helps to counter these issues and thus, the Boltzmann transport equation (BTE) comes into focus. In this thesis, a deterministic solution method for the BTE is pursued.First, physical fundamentals and mathematical preconsiderations for the treatment of the BTE are reviewed. This covers the calculation of band structures/dispersion relations, an overview of scattering mechanisms and a detailed description of the coordinate transformations required for analyzing prominent semiconducting materials, such as Silicon-Germaniumand III-V compounds, like Indium-Phosphide.The second part focuses on the numerical treatment of the BTE. Besides the employed normalization strategy, the discretization of the BULK BTE is described in detail. Based on the latter, the extensions for the device BTE are specified.A method for the direct calculation of stationary BTE solutions - for the BULK and device case - is introduced and an overview of the WENO method is outlined.The third part is dedicated to the applications of the deterministic solution method and simulation results of the BTE. Recipes for calculating the most important quantities, like current/electron densities, are given. Simulation results for the BULK case and for hetero-junction bipolar transistors are presented and analyzed. Here, the focus is put on both Silicon/Silicon-Germanium and Indium-Phosphide/Indium-Gallium-Arsenide material systems. The part is concluded by a critical review on the current field of application.A summary and an outlook on future extensions concludes the thesis. Besides pointing out the achievements of this work, the last section also gives a short motivation for adapting the method to 1D semiconductors, like carbon nanotubes.