Sodium 9,10-anthraquinone-2,6-disulfonate (Na AQ26DS), with polyanionic character and two O-Na ionic bonds, is found to be a highly stable organic cathode in Na-ion batteries, delivering capacities of approximately 120 mAh g for 300 cycles (50 mA g ) and around 99 mAh g for 1000 cycles (1 A g ). These results are the best performance reported to date for small-molecule, anthraquinone-based organic cathodes in Li-, Na-, or K-ion batteries.
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| http://dx.doi.org/10.1002/cssc.201900539 | DOI Listing |
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