The past years have shown important performance improvement in EDLCs performance thanks to the design of porous carbons and electrolytes with tailored properties. However, although EDLCs are now used in several applications including for the ever-growing electric mobility market (trams and hybrid electric vehicles), the main challenge for ECs lies in the improvement of their energy density. This presentation will give an overview of the joint work achieved together with Prof Yury Gogosti on the effect of the electrolyte confinement on the capacitive performance of 3-Dimensional and 2-D materials. We will start by the mechanistic study of ion adsorption in porous carbon electrodes, where the use of advanced electrochemical techniques such as quartz crystal microbalance (EQCM) revealed specific ion-carbon surface interactions responsible for improved electrochemical performance. The second part of the talk will be focus on high-rate MXenes materials pioneered by Yury and M. Barsoum, and show how the careful control of the electrode architecture and surface composition have led to drastic improvement of the electrochemical performance. Besides offering new opportunities for designing high energy density supercapacitors, this set of results also shows the major impact of Yury Gogotsi’s contribution to the field of energy storage.

Fast energy storage processes: From double layer adsorption to high-rate redox reactions

ACS Fall 2021

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.