Long‐lifespan Polyanionic Organic Cathodes for Highly Efficient Organic Sodium‐ion Batteries
Di Li, Wu Tang, Chen Yue Yong, Zheng Hui Tan, Chuan Wang, Cong Fan
Abstract
Abstract An organic Na‐ion battery is reported with a polyanionic 9,10‐anthraquinone‐2,6‐disulfonate (Na 2 AQ26DS, 130 mAh g −1 ) cathode and the Na‐intercalated state (Na 4 TP) of sodium terephthalate (Na 2 TP, 255 mAh g −1 ) as the anode. The resulting full cells deliver the maximum discharge capacity of 131 mAh g −1 cathode in 0.5–3.2 V, simultaneously maintaining the average value of ≈62 mAh g −1 cathode during 1200 cycles (0.5 A g −1 , ≈4 C). These results are among the best performing organic sodium‐ion full cells reported to date.
Topics & Concepts
AnodeSodiumCathodeBattery (electricity)Organic radical batteryIonChemistryInorganic chemistrySodium-ion batteryAnthraquinoneMaterials scienceChemical engineeringElectrochemistryOrganic chemistryElectrodePhysical chemistryPhysicsEngineeringFaraday efficiencyPower (physics)Quantum mechanicsAdvancements in Battery MaterialsAdvanced Battery Materials and TechnologiesAdvanced Battery Technologies Research