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Abstract
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, 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.
