Coskun Research Group has recently published a new article in the journal Chemistry Europe entitled, "Aromaticity-Switchable Tetraoxa[8]circulenes as Anode Materials for Sodium-Ion Batteries" in collaboration with Lattuada Research Group.

For more information: https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/ceur.202500149

Abstract

Despite being a key concept in chemistry, aromaticity and the switching thereof have only seldom been used in charge storage devices. Herein, this work explores how aromaticity switching in a tetraoxa[8]circulene derivative, named N-TOC, can be used in sodium-ion batteries and assesses the switching mechanism through computational approaches. N-TOC delivers exceptional cycling stability at 50 and 100 mA g⁻¹ over 500 cycles with a capacity retention of 91% and 89%. Supported by DFT calculations, this work investigates changes in aromatic motifs within N-TOC through changes in redox states upon charge storage, thus presenting a promising strategy for the design of organic electrodes in Na-ion batteries.