78964 - Electrochemistry T

Course Unit Page

Academic Year 2018/2019

Learning outcomes

At the end of the course the student has acquired basic knowledge of electrochemistry. In particular, the student knows the thermodynamic and kinetic aspects of electrode processes and the fundamentals of transport and interactions of charged species. The student learns how to apply this knowledge in the field of electrochemical energy conversion and storage, as well as about the corrosion of materials.

Course contents

Fundaments:
• Electronic and ionic conductors
• Electrolytes
• Electrochemical Cells
• Faraday's Laws

Electric conduction in the Electrolytes:
• Ionic Mobility
• Conductance
• Conductivity and Kohlrausch law
• Tansport

Interionic Interactions:
• Chemical Potential
• Debye-Hückel theory of the solutions

Electrode Potentials:
• Nernst Equation
• Electrode Potential
• StandardPotential

Mass Transport:
• Flux
• Migration
• Diffusion
•Convection

Electrode-Solution Interface Structure:
• Structure of the Electrode/Solution Interface
• Double electric Layer
• Electrc potential at the Interface
• Polarizable and non-polarizable Interfaces
• Semiconductor electrodes

Elementi di cinetica chimica ed elettrodica:
• Richiami di cinetica chimica
• Meccansimi di reazione
• Teoria dello stato di transizione
• La sovratensione
• Cinetica del trasferimento elettronico eterogeneo ed equazione di Butler-Volmer
• Effetto del trasporto di massa
• Teoria di Marcus del trasferimento elettronico

Tecniche di Indagine Elettrochimica:
• Legge di Cottrell e cronoamperometria
• voltammetria a scansione lineare di potenziale
• voltammetria ciclica di specie in soluzione e adsorbite su superficie
• Spettroscopia di Impedenza Elettrochimica (EIS)
• Tecniche elettrochimiche accoppiate a tecniche spettroscopiche (assorbimento ed emissione)
•Meccanismi di reazione elettrochimicamente indotti

Applicazioni:
• Sorgenti di energia elettrochimica
• Elettrocatalisi
• Celle a combustibile
• Sensori elettrochimici
• Corrosione

Readings/Bibliography

• Slides and Notes from the Lessons
CHIMICA FISICA, P. Atkins e J. de Paula, 4 ed., Zanichelli, 2004
ELECTROCHEMISTRY, C.H. Hamann, A. Hamnett e W. Vielstich, 2 ed., Wiley-VCH, 2007
Electrochemical Methods - Fundamentals and Applications, A. J. Bard, L. R. Faulkner, Wiley (II edition), 2001

Teaching methods

Lessons and excercises

Lab exercises and demonstrations of selected parts of the course

Assessment methods

Oral examination, lasting 40-50 min., concerning topics discussed during the classroom lessons.

Teaching tools

Slide Projection;

blackboard;

notebook.

Office hours

See the website of Massimo Marcaccio

See the website of Catia Arbizzani