Speakers

-Burak Aktekin
-Duncan Paul Fagg
-Y. Eren Kalay

 

-Alexander Karl Opitz
-Burak Ulgut

 

Additional names and topics will be announced soon. You can write to us regarding the topics to be covered mESC-School 23, together with whom you would recommend as instructor. Please contact us at o-c@mesc-is.org



Dr. Durak Aktekin
Justus Liebig University Giessen

In-situ and Operando Experiments in Battery Research

Burak Aktekin  received his B.Sc(2010) and M.Sc (2013) in Metallurgical  and Materials Engineering Department in Middle East Technical University. He then joined Uppsala University where he worked on the high voltage spinel positive electrodes   for LiBs. His research activities covered  (post)synthesis modifications of cathode materials, electrode and cell preparation in different formats, as well as  a study of liquid (and polymer) electrolytes. Having obtained his PhD in 2019   and following a brief  postdoctoral period   at Uppsala University, Dr. Aktekin joined J. Janeks’s research group at  the Institute of Physical Chemistry, Justus Liebig University Giessen where he is working on Interfaces in solid-state batteries   Dr. Aktekin  has experience in a wide range of analytical tools within the context of battery research including synchrotron/neutron diffraction to perform in situ and operando experiments.  

DuncanFagg

Dr.  Duncan Paul Fagg
University of Aveiro, Portugal.

Solid State Proton Conductors: Materials, Applications and Measurements ”

Dr. Duncan Fagg is currently employed as a Principal Researcher in the nanotechnology research division (NRD)   in the University of Aveiro, Portugal. He  obtained his B.SC in Chemistry and Materials science  Nottingham University 1992 and Ph.D. in Chemistry Aberdeen University 1997. He has over 20 years of research experience with previous placements in CICECO Aveiro, Portugal, ICV Autonomous University Madrid, Spain, Dept.Chemical Engineering, Patras Greece, School of Chemistry, St-Andrews University Scotland, and Risø DTU National Laboratory for Sustainable Energy, Roskilde Denmark.  He is the author of over 100 international scientific publications in areas covering   Solid Oxide Fuel Cells (SOFC), Solid Oxide Electrolyser Cells (SOEC), Oxygen separation membranes, Hydrogen separation membranes, Hydrogen Storage.

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Dr.  Alexander Karl Opitz
TU Wien

Electrochemical Impedance Spectroscopy for Solid Oxide Electrolysis/Fuel Cells  Research

In the light of climate changes caused by anthropogenic CO2 emissions, efficient energy conversion and especially storage of excess sustainable energy are of increasing importance. Solid oxide electrolysis and fuel cells (SOECs & SOFCs) are expected to play an important role in future energy storage and conversion scenarios due to their high thermodynamic efficiency and large fuel flexibility reaching from hydrogen to carbon based fuels. For an efficient operation of SOECs & SOFCs, optimized materials such as solid electrolytes with high ion conductivity and best-performing electrodes are needed. Besides the individual materials, it is also often the numerous interfaces in these devices, which play an important role.
Impedance spectroscopy is a tool, which allows separation of individual electrochemical elementary parameters such as grain and grain boundary conductivities in solid electrolytes, surface and interface resistances in mixed conducting electrodes, and also capacitive contributions such as interfacial or chemical capacitances. This presentation deals with the role of impedance spectroscopy for the basic characterisation of materials used in SOECs/SOFCs. Discussed examples reach from conductivity measurements on electrolyte materials over material characterisation using geometrically well-defined model systems, to real 3D porous cermet electrodes.

Alexander K. Opitz is the head of the research group Electrochemical Energy Conversion at TU Wien(Vienna, Austria). There he also received his PhD in 2011. He was a visiting scientist at MIT in 2017 and returned to a tenure track position at TU Wien, where he is now an Assistant Professor in the research division of Technical Electrochemistry. He is doing research in the fields of Solid State Ionics (electrode kinetics, current pathways, and electrochemically active zones of solid state electrochemical systems), heterogeneous catalysis (in-situ spectroscopic and analytic studies on the surface chemistry and catalytic activity of electrodes), and materials chemistry (synthesis and characterization of novel, alternative materials for solid oxide cells).

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Prof. Y Eren Kalay
Middle East Technical University


“In Situ Synchrotron Diffraction and Rietveld Analysis”

In this lecture, following the basics of  X-ray  diffraction, emphasis will be placed on in-situ characterization techniques based on synchrotron radiation  using sequential Rietveld analysis.

Yunus Eren Kalay received his B.Sc(2001) and M.Sc.(2003) degrees in Metallurgical and Materials Engineering from the Middle East Technical University. He obtained his PhD in Iowa State University in 2009. He was a post-doc for 2 years in Ames laboratory before he joined METU where he is an associate professor at the Materials Engineering Dept. Professor Kalay’s research centers on amorphous alloys, namely on the evolvement and the control of amorphous structure during solidification. Prof Kalay has an in-depth expertise on material characterization techniques. This includes advanced electron microscopy techniques which he applied to a wide spectrum of material problems ranging from electronic packaging, rare earth-free magnets and single crystal enhancement. His expertise also includes in-situ experiments involving synchrotron radiation. He actively promotes the use of synchrotron radiation and  in-situ experiments  for material research. Prof Kalay is the editor of MATTER, a journal dedicated to publishing undergraduate research. He is also an active promoter of science in pre-university education.

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Prof. Burak Ulgut
Bilkent University


“Electrochemical Impedance Spectroscopy for Battery Research”

Impedance spectroscopy is an experimental tool that can yield fundamental materials information in  electrochemical storage systems. Basics of impedance spectroscopy will be covered including the basic math and experimental methods. Emphasis will be placed on validating the obtained data and distinguishing the effects of instrumental and sample-based artifacts from actual physical parameters. Applications to energy storage will be discussed using examples of supercapacitors and batteries.

Prof..Burak Ülgüt got his PhD in Electrochemistry from Cornell University in 2007. He  was a postdoc at the Optoelectronics group in the same university for a year. He  then spent 6 years in Gamry Instruments developing various instrumental tools about Electrochemical Impedance Spectroscopy and Spectroelectrochemistry. In 2014 he returned to Turkey to spend a year at Inci Aku as an R&D executive. In the fall of 2015 he joined the Chemistry department of Bilkent University where he is leading a research group working on developing new electrochemical measurement and modeling methodologies mostly geared towards a better understanding of energy storage and conversion systems.

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