Y. Chen#, J. Li#, Q. Zhu#, K. Fan, Y. Cao, G. Zhang, C. Zhang, Y. Gao, J. Zou, T. Zhai, C. Wang*, Two-dimensional Organic Supramolecule via Hydrogen Bonding and π-π Stacking for Ultrahigh Capacity and Long-Life Aqueous Zinc-Organic Batteries. Angew. Chem. Int. Ed. 2022, DOI: 10.1002/anie.202116289.
原文链接：https://onlinelibrary.wiley.com/doi/10.1002/anie.202116289
Abstract: Aqueous zinc-ion batteries (ZIBs) are promising for next-generation energy storage. However, the reported electrode materials for ZIBs are facing the shortcomings including low capacity and unsatisfactory cycling stability etc. Herein, hexaazatrinaphthalene-quione (HATNQ) is reported for aqueous ZIBs. The HATNQ electrodes delivered an ultrahigh capacity (482.5 mAh g-1 at 0.2 A g-1) and outstanding cyclability of >10000 cycles at 5 A g-1. The capacity sets new record for organic cathodes in aqueous ZIBs. The high performances are ascribed to the rich C=O and C=N groups that endowed HATNQ with 2D layered supramolecular structure by multiple hydrogen bonds in plane with π-π interactions out of plane, leading to enhanced charge transfer, insolubility, and rapid ion transport for fast-charge and -discharge batteries. Moreover, the 2D supramolecular structure boosted the storage of Zn2+/H+, particularly the storage of Zn2+, due to the more favorable O···Zn···N coordination in HATNQ.
