Ing Ind - Inf (Mag.)(ord. 270) - BV (477) ENERGY ENGINEERING - INGEGNERIA ENERGETICA
099362 - ELECTROCHEMICAL ENERGY CONVERSION AND STORAGE
The course aims to provide the students with the theoretical knowledge of physics, the engineering tools and the practical experience to understand, model and design the electrochemical devices, like battery and fuel cell that occupy a growing role in energy conversion and storage sector.
Risultati di apprendimento attesi
The student will acquire knowledge about:
thermodynamics of an electrochemical cell
kinetics electrochemical reactions
transport phenomena in electrolyte and porous electrode
measurement and diagnostic techniques for electrochemical devices
main features of state-of-art and close-to-market technologies for energy conversion and storage in automotive and stationary applications
The student will be able to describe an electrochemical energy device through mathematical models at the required level of complexity, including dynamic and off-design operation, making the proper assumptions.
The students will be able to apply the described knowledge and capability to:
analyse the operation of an electrochemical energy device during actual operation, through interpretation of experimental data and modelling analysis
perform a preliminary design of a electrochemical energy device and its components
evaluate the techno-economic competitiveness of an electrochemical device in a specific application
Physics of electrochemical processes
Basic concepts. Historical overview of electrochemical devices. Working principles of a fuel cell and a battery. Description of the electrochemical double layer.
Thermodynamics of an electrochemical cell. Definition of electrochemical potential and thermodynamic activity. Nernst Equation for ideal and real systems.
Kinetics of electrochemical reaction. Electrochemical reaction rate, definition of activation polarization. Analysis of single-step, two-step, parallel step reactions. Concentration polarization.
Ion transfer in electrolyte. Ionic transport by migration and diffusion, description of the Nernst-Planck equation, the electro-neutrality approximation, the effect of convective transport.
Mass transport phenomena in porous electrodes. Fick and Knudsen diffusion phenomena in porous media. The effect of convective transport, Darcy’s law.
Electrochemical measurement and diagnostic techniques. Polarization curve, cycling and linear voltammetry. The electrochemical impedance spectroscopy and its interpretation. Degradation long term and accelerated test. Description of advanced in-situ and ex-situ techniques.
Electrochemical energy technology
State of art of electrochemical energy conversion and storage technology for automotive, stationary and portable applications.
Batteries with aqueous and non aqueous electrolyte. General features. Lithium ion battery. State of charge and efficiency. Charging and discharging. Heat transfer.
Flow Batteries. General features. Independency of power and energy. Redox couples. Effect of fluid dynamics on mass transport. Migration and cross-contamination effect.
Polymer Electrolyte Fuel Cell. General features. Transport phenomena in catalyst layers. Degradation mechanisms. Water and heat management.
Solid Oxide Fuel Cell. General features. Internal reforming. Heat and mass transfer. Degradation mechanisms. Reverse operation, co-electrolysis.
Water Electrolyser. General features. Two-phase transport phenomena. Pressurized and variable load operation. Gas crossover.
Experimental characterisation and diagnostics. The students will attend to two frontal lessons and will be provided with videos regarding experiments carried out at MRT Fuel Cell Lab, comprising the operation of real devices in different conditions and related diagnostic analysis, in order to consolidate the theoretical knowledge and increase the practical ability to understand and predict the behaviour of real devices.
Mathematical modelling. Such activity, using Matlab software, aims at providing the engineering tools to simulate and design the devices with a physically correct approach and the appropriate level of complexity, with a special emphasis on transport phenomena.
Seminars on some specific topics will be held by external experts, permitting the students to receive the most recent and advanced knowledge about cutting-edge research activities.
Attendance of the course of Heat and Mass Transfer is suggested.
Modalità di valutazione
The students will be evaluated through the assignment of optional homework regarding the experimental and modelling practical lessons and a final exam about the whole course programme, that will include:
Theoretical questions about the knowledge identified in the expected learning outcome (item 1)
Exercises requiring simplified modelling analysis, preliminary design, experimental data analysis or techno-economic evaluation, as identified in the expected learning outcome (items 2 and 3)
Christine Lefrou, Pierre Fabry, Jean-Claude Poignet, Electrochemistry The Basics, With Examples, Editore: Springer, Anno edizione: 2012, ISBN: 978-3-642-30249-7
V. S. BAGOTSKY, FUNDAMENTALS OF ELECTROCHEMISTRY, Editore: Wiley, Anno edizione: 2006, ISBN: 978-0-471-70058-6
Tipo Forma Didattica
Ore di attività svolte in aula
Ore di studio autonome
Laboratorio Di Progetto
Informazioni in lingua inglese a supporto dell'internazionalizzazione
Insegnamento erogato in lingua
Disponibilità di materiale didattico/slides in lingua inglese
Disponibilità di libri di testo/bibliografia in lingua inglese
Possibilità di sostenere l'esame in lingua inglese
Disponibilità di supporto didattico in lingua inglese