Molecule-aggregation organic electrodes in principle have the capability for "single-molecule-energy-storage" in metal-ion rechargeable batteries, which indicates that the same organic electrode can be simultaneously applied to multiple metal-ion rechargeable batteries. In this study, the polyanionic organic compound 9,10-anthraquinone-2,6-disulfonate (Na AQ26DS, 130 mAh g ) is used as a common cathode and metal bismuth (Bi) as a common anode to simultaneously assemble low-cost Na-ion and K-ion full cells. The Na-ion full cells can deliver the peak discharge capacity of 139 mAh g at 0.5-3.0 V, and the K-ion full cells can show the peak discharge capacity of 130 mAh g at 0.5-3.0 V. These results are comparable to the best organic-based Na-ion and K-ion full cells reported to date.
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