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Energy Engineering - Electrochemical Energy Conversion and Storage

Electrochemical Energy Conversion and Storage


Synthetic program:

Il corso fornisce le conoscenze di base della fisica per la modellizzazione e la progettazione di sistemi elettrochimici per la conversione e l'accumulo di energia, ed include i seguenti aspetti: la termodinamica di una cella elettrochimica, la cinetica delle reazioni elettrochimiche, i fenomeni di trasporto nell'elettrolita e negli elettrodi porosi, tecniche di misura e diagnostica. Dopo un'analisi delle tecnologie elettrochimiche per la conversione e l'accumulo di energia, verranno in seguito approfondite le caratteristiche e le problematiche dei seguenti sistemi per applicazioni stazionarie e automobilistiche, per mezzo di attività sperimentali e modelli fisici, con particolare attenzione ai fenomeni di trasporto: batterie con e senza elettrolita liquido, batterie a flusso, celle a combustibile polimeriche, celle a combustibile ad ossido solido, elettrolizzatori.

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.

Lecture Notes

Complete course:

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Divided by topic:

Type File name Year
Digital notes Batteries 2020/2021
Digital notes Batteries (3) 2018/2019
Digital notes Battery technology 2018/2019
Digital notes Current issues in Li ion batteries (part 1) 2018/2019
Digital notes Current issues in Li ion batteries (part 2) 2018/2019
Digital notes Current issues in Li ion batteries (part 3) 2018/2019
Digital notes Fuel cells 2020/2021
Digital notes Fuel cells (2) 2018/2019
Digital notes Introduction 2018/2019
Digital notes Introduction (1) 2018/2019
Digital notes Kinetics (part 1) 2018/2019
Digital notes Kinetics (part 2) 2018/2019
Digital notes Mass transport (part 1) 2018/2019
Digital notes Mass transport (part 2) 2018/2019
Digital notes Modelling battery 2018/2019
Digital notes PEMFC analysis (part 1) 2018/2019
Digital notes PEMFC analysis (part 2) 2018/2019
Digital notes PEMFC technology (part 1) 2018/2019
Digital notes PEMFC technology (part 2) 2018/2019
Digital notes Thermodynamics 2018/2019

Other:

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Exercises

Complete course:

Type File name Year
Digital notes Exam simulation 2017/2018
Handwritten notes Exam typology exercises : solution 2017/2018
Digital notes Exam typology exercises : text 2017/2018

Divided by topic:

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Exams

First partial exam:

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Full exam:

Type Date
Text 26/06/2017
Solution 26/06/2017
Text 13/07/2017
Solution 13/07/2017
Solution 15/09/2017
Text 05/02/2018
Text 15/09/2017
Solution 05/02/2018
Text 29/06/2018
Solution 29/06/2018
Text 19/07/2018
Solution 19/07/2018
Text 13/09/2018
Solution 13/09/2018
Text 25/01/2019
Solution 25/01/2019
Text 14/06/2019
Solution 14/06/2019
Text 17/07/2019
Solution 17/07/2019
Text 13/09/2019
Solution 13/09/2019
Text 24/01/2020
Solution 24/01/2020
Text 12/02/2020
Solution 12/02/2020
Text 12/06/2020
Solution 12/06/2020
Text 15/07/2020
Solution 15/07/2020
Text 02/09/2020
Solution 02/09/2020
Text 13/01/2021
Solution 13/01/2021
Text 05/02/2021
Solution 05/02/2021
Text 18/06/2021
Solution 18/06/2021

Oral exam:

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Multiple choice test:

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Other:

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Other

Laboratory:

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Projects:

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Presentations:

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Live

Quick daily notes, exercises and audio recordings. Files will be approved on priority but deleted after 365 days. 2 points will be assigned by default.

Quick contents:

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