Published October 2, 2025
| Version v1
Journal article
Open
Aromaticity-Switchable Tetraoxa[8]circulenes as Anode Materials for Sodium-Ion Batteries
Creators
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1.
University of Fribourg
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2.
Paul Scherrer Institute
Description
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.
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Chemical Characterization.zip
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Additional details
Funding
- Swiss National Science Foundation
- Pushing All Solid-State Batteries to Their Full Potential - Interface Engineering Guided by Advanced Diagnostics for High Performance Scalable Batteries 202296
Dates
- Available
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2025-10-02