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Long‐lifespan Polyanionic Organic Cathodes for Highly Efficient Organic Sodium‐ion Batteries
Author(s) -
Li Di,
Tang Wu,
Yong Chen Yue,
Tan Zheng Hui,
Wang Chuan,
Fan Cong
Publication year - 2020
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.202000131
Subject(s) - anode , cathode , sodium , battery (electricity) , organic radical battery , ion , inorganic chemistry , sodium ion battery , chemistry , anthraquinone , materials science , chemical engineering , electrochemistry , organic chemistry , electrode , faraday efficiency , power (physics) , physics , quantum mechanics , engineering
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.