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Electrochemical components /
This book focuses on the methods of storage commonly used in hybrid systems. After an introductory chapter reviewing the basics of electrochemistry, Chapter 2 is given over to the storage of electricity in the form of hydrogen. Once hydrogen has been made, we have to be able to convert it back into...
| Clasificación: | Libro Electrónico |
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| Otros Autores: | |
| Formato: | Electrónico eBook |
| Idioma: | Inglés |
| Publicado: |
London :
ISTE,
2013.
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| Colección: | Electrical engineering series.
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| Temas: | |
| Acceso en línea: | Texto completo |
Tabla de Contenidos:
- Cover; Title Page; Contents; Preface; Chapter 1. Basic Concepts of Electrochemistry used in Electrical Engineering; 1.1. Introduction; 1.2. Brief description and principles of operation of electrochemical components; 1.2.1. Principle of operation; 1.2.2. Brief description of groups of components; 1.3. Redox reaction; 1.4. Chemical energy; 1.4.1. Enthalpy, entropy and free energy; 1.4.2. Enthalpy, entropy and free energy of formation; 1.5. Potential or voltage of an electrode; 1.6. Reversible potential of a cell; 1.7. Faradaic current density and the Butler-Volmer equation.
- 1.8. Butler-Volmer equation for a whole cell1.9. From the Butler-Volmer equation to the Tafel equation; 1.10. Faraday's law; 1.11. Matter transfer model: Nernst model; 1.12. Concept of limit current; 1.13. Expression of the polarization curve; 1.14. Double-layer capacity; 1.15. Electrochemical impedance; 1.16. Reagents and products in the gaseous phase: total pressure, partial pressure, molar fraction and mixture; 1.17. Corrected exercises; 1.17.1. Calculation of the variation in enthalpy during the formation of a mole of water.
- 1.17.2. Calculation of the variation in entropy for the formation of a mole of water1.17.3. Calculation of the variation in free energy during the formation of a mole of water; 1.17.4. Calculation of the Nernst potential for a cell in a PEM fuel cell (PEMFC); 1.17.5. Faraday equations for a Pb accumulator; 1.17.6. Calculation of the mass of water consumed by an electrolysis cell; Chapter 2. Water Electrolyzers; 2.1. Introduction; 2.2. Principles of operation of the main water electrolyzers; 2.3. History of water electrolysis; 2.4. Technological elements; 2.4.1. Alkaline technology.
- 2.4.2. PEM technology2.4.3. SO technology; 2.4.4. Comparison of the three water electrolyzer technologies; 2.4.5. Specifications of a commercial electrolyzer; 2.5. Theoretical approach to an electrolyzer; 2.5.1. Energy-related elements; 2.5.2. Electrical behavior in the quasi-static state; 2.5.3. Electrical behavior in the dynamic state with a large signal; 2.5.4. Electrical behavior in a dynamic state with a small signal (impedance); 2.6. Experimental characterization of the electrical behavior of an electrolyzer; 2.6.1. Polarization curve (quasi-static characterization).
- 2.6.2. Impedance spectroscopy (dynamic small-signal characterization)2.6.3. Current steps; 2.6.4. Current sweeping (large-signal dynamic characterization); 2.6.5. Combining the approaches to characterization (advanced approach); 2.7. Procedures for parameterizing the models; 2.7.1. Minimal combinatorial approach to experimental characterizations; 2.7.2. Multiple impedance spectra approach; 2.7.3. Low-frequency multi-sweeping approach; 2.7.4. Toward an optimal and systematic combinatorial exploitation of the experimental characterizations.