Chen Dan, Cheng Linqi, Chen Weiben, Wang Heng-Guo, Cui Fengchao, Chen Long
State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University Changchun 130012 China
Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Science, Tianjin University Tianjin 300072 China.
Chem Sci. 2024 Jun 18;15(29):11564-11571. doi: 10.1039/d4sc00932k. eCollection 2024 Jul 24.
There is growing interest in 2D conjugated metal-organic frameworks (2D -MOFs) for batteries due to their reversible redox chemistry. Nevertheless, currently reported 2D -MOFs based on n-type ligands are mostly focused on the storage of cations for batteries. Herein, we successfully synthesize nitrogen-rich and electron-deficient p-type ligand-based Ni(HATQ) assembled from 2,3,7,8,12,13-hexaaminotricycloquinazoline (HATQ), and the ion co-storage feature of cations and anions in sodium ion batteries (SIBs) is demonstrated for 2D -MOFs for the first time. The redox chemistry from the p-type ligand and π-d hybridization center endows the Ni(HATQ) cathode with high capacity and good rate performance, especially excellent capacity retention of 95% after 1000 cycles. These findings provide a promising avenue for the exploration of other p-type multidentate chelating ligands toward new 2D -MOFs and expand the application of 2D -MOFs in energy storage systems.
由于其可逆的氧化还原化学性质，二维共轭金属有机框架（2D -MOF）在电池领域的研究兴趣日益浓厚。然而，目前报道的基于n型配体的二维金属有机框架大多集中于电池阳离子存储。在此，我们成功合成了由2,3,7,8,12,13-六氨基三环喹唑啉（HATQ）组装而成的富含氮且缺电子的基于p型配体的Ni(HATQ)，并首次展示了二维金属有机框架在钠离子电池（SIB）中阳离子和阴离子的离子共存储特性。来自p型配体的氧化还原化学性质和π-d杂化中心赋予了Ni(HATQ)阴极高容量和良好的倍率性能，尤其是在1000次循环后具有95%的优异容量保持率。这些发现为探索其他用于新型二维金属有机框架的p型多齿螯合配体提供了一条有前景的途径，并拓展了二维金属有机框架在储能系统中的应用。
