Elżbieta Frąckowiak - Electrolytes in electrochemical capacitors: beyond capacitive storage

Electrochemical capacitors (EC) are the devices based on the reversible storage of energy by electrostatic (capacitive) attraction of ions. Performance of EC are strongly governed by the type of electrolytes, namely aqueous, organic and ionic liquids. As a consequence, practical voltage range of EC in these electrolytes varies from 0.8 V to 3.5 V, respectively. Capacitive charge storage can be increased by faradaic reactions, frequently called pseudocapacitive effects. Exploring redox active species from electrolytic solution is another possibility for energy increase by pseudocapacitive effects. Practical application of such redox pairs will be determined by reversibility, pH of solution, concentration, price, availability, toxic character. Some of them can be used only as additive to electrolyte. This talks will present and discuss the use of differentes chemical species in electrochemical capacitors.

Présentation de l'intervenant

Elzbieta Frackowiak is a full professor in the Institute of Chemistry and Technical Electrochemistry at the Poznan University of Technology, Poland. Her research field is energy storage/conversion with special emphasis on electrochemical capacitors, lithium-ion batteries, fuel cells and hydrogen electrosorption in carbon materials. She is particularly interested in electrode materials from activated carbons, carbon nanotubes, carbons enriched with heteroatoms (nitrogen, oxygen), graphene materials, conducting polymers and composites.

E. Frackowiak coordinated a few international projects - NATO project Science for Peace SfP 973849 (1999-2005), Marie Curie Action FP7-PEOPLE-2011-IAPP - "Energy Caps” (2011-2015), FP7 project “NEST” (2012-2016), Polish-Swiss project “INGEC” (2012-2016). She served as a Chair of the Electrochemical Energy Conversion and Storage Division in the International Society of Electrochemistry for the term 2009-2014. She was a winner of the Foundation for Polish Science Prize (2011). She received Officer Cross Restituta Polonia for scientific achievements (2011). She was a Member of the National Centre Science Council (2012 – 2015). Since 2013 she serves as a President of the Polish Carbon Society.

In 2013 she became a member of the Polish Academy of Sciences (vice-president 2015-2018). Since 2014 she is a Fellow of the Royal Society of Chemistry. In 2016 she was appointed as a member of the Executive Board of EuroCASE (European Council of Academies of Applied Sciences, Technologies and Engineering). At present, she is associate editor of Carbon journal (Elsevier).

E. Frackowiak has authored more than 160 publications, has a significant number of patents (ca. 50), and 22 book chapters. Her scientific papers have received over 18 000 citations (H=57). 

ISEECap 2019

ISEECap 2019 (International Symposium on Enhanced Electrochemical Capacitors) gathered the most renowned international experts together with students and non-specialist engineers and researchers who share interest in electrochemical capacitors. A broad range of topics was covered, including electrochemical double layer capacitors, pseudocapacitive materials and related mechanisms, electrolytes and interfaces, modelling of phenomena and systems, microsupercapacitors and related components, systems integration and applications, fast charging battery electrodes for asymmetric and hybrid devices, characterization techniques, in-situ and operando methods. This edition celebrated the ten-year anniversary of the symposium series in the beautiful city of Nantes from 6th May to 10th May 2019.