Events at Department of Energy Technology

Industrial/PhD Course: Electrochemical Impedance Spectroscopy – Theory, Measurement and Analysis

Time

30.08.2021 kl. 08.30 - 03.09.2021 kl. 16.30

Description

Organizer: 

Professor Søren Højgaard Jensen, Aalborg University, Denmark

Lecturers: 

Professor Søren Højgaard Jensen, Aalborg University 
Associate Professor Samuel Simon Araya, Aalborg University 

ECTS:  5 

Description: 

The course is a full-week course held in week 35.  

  • Day 1: Monday, August 30th: General introduction to impedance spectroscopy.   

This part of the course provides an introduction to concepts such as impedance elements, equivalent circuits, time-frequency domain relations, Fourier and Laplace transform and measurement methods. This part explains what creates impedance in electrochemical systems and how the impedance can be measured.   

Lecturer: Søren and Samuel 

  • Day 2: Tuesday, August 31st: Measurement optimization and Lab session 

This part discusses possible sources of measurement errors and noise. Various methods for error minimization will be presented. Students will form groups of 3-4 persons where at least one person in the group have previous experience with impedance measurements and ideally have a running experiment/test setup. The groups will visit existing test setups, examine the impedance measurement conditions and discuss if there is anything that can be done to improve the impedance measurements.   

Lecturer: Søren and Samuel   

  • Day 3: Wednesday, September 1st: Impedance Modeling  

The goal of the modeling is to get the most information out of the measured impedance spectra, with due respect to the measurement uncertainties. Various equivalent circuits will be examined and used to model the impedance spectra provided by the students. Modeling tools will be introduced such as ZsimpWin, Zview and Elchemea.   

Lecturer: Søren and Samuel  

  • Day 4: Thursday, September 2nd: Advanced electrochemistry, measurement and analysis methods 

This part of the course provides an introduction to various advanced measurement methods such as 3-electrode setups, rotating disc measurements, higher harmonics, and systematic test variations. This part also present various advanced analysis methods such as DRT, ADIS and bulk fitting. 

Lecturer: Søren and Samuel  

  • Day 5: Friday, September 3rd: Online diagnostics and trends  

This part of the course discuss examples of online diagnostics of electrochemical devices and adaptive control thereof. The focus is on opportunities and challenges for further scientific and commercial applications of electrochemical impedance spectroscopy.  

Lecturer: Søren and Samuel  

Prerequisites: 

Familiarity with complex numbers and basic calculus.  

Form of evaluation: 

Class discussion, case study exercise, lab measurements, presentation of group work results. 

Price

6000 DKK for PhD students outside of Denmark and 8000 DKK for the Industry.

Host

Department of Energy Technology, Aalborg University

Address

Aalborg University, Pontoppidanstræde 101, room 1.015, 9220 Aalborg East

Registration Deadline

10.08.2021 kl. 00.00

Register at

https://phd.moodle.aau.dk