Coronene: A High-Voltage Anion De-insertion Cathode for Potassium-Ion Battery

02 December 2020, Version 1
This content is a preprint and has not undergone peer review at the time of posting.


Potassium-ion batteries have been envisioned to herald the age of low-cost and high-performance energy storage systems. However, the sparsity of viable components has dampened the progress of these energy devices. Thus, herein, we report coronene (not to be confused with ‘corona’), a high-voltage cathode material that manifests a high-voltage of 4.1 V enkindled by anion (de)insertion. This work not only illuminates the broad class of polycyclic aromatic hydrocarbons as prospective cathode materials but also sets a new benchmark for the performance of future organic cathode materials. It would be remiss not to mention that the timing of this submission is not related to the ongoing COVID-19 pandemic and any similarities noted herein are coincidental. On the other hand, as a silver lining, this work epitomises a beacon of hope in these despairing times.


Polycyclic Aromatic Compounds
Anion Insertion
Potassium Battery
Energy Storage
High Voltage
Dual-Ion battery


Comments are not moderated before they are posted, but they can be removed by the site moderators if they are found to be in contravention of our Commenting Policy [opens in a new tab] - please read this policy before you post. Comments should be used for scholarly discussion of the content in question. You can find more information about how to use the commenting feature here [opens in a new tab] .
This site is protected by reCAPTCHA and the Google Privacy Policy [opens in a new tab] and Terms of Service [opens in a new tab] apply.