期刊
CHEMICAL SCIENCE
卷 10, 期 38, 页码 8889-8894出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9sc03052b
关键词
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资金
- UGC
- CSIR [TLP003526]
- Materials Chemistry Consortium [EP/P020194]
- IISER-Kolkata start-up research
- DST-Swarnajayanti Fellowship grant
The two-dimensional structural features of covalent organic frameworks (COFs) can promote the electrochemical storage of cations like H+, Li+, and Na+ through both faradaic and non-faradaic processes. However, the electrochemical storage of cations like Zn2+ ion is still unexplored although it bears a promising divalent charge. Herein, for the first time, we have utilized hydroquinone linked beta-ketoenamine COF acting as a Zn2+ anchor in an aqueous rechargeable zinc ion battery. The charge-storage mechanism comprises of an efficient reversible interlayer interaction of Zn2+ ions with the functional moieties in the adjacent layers of COF (-182.0 kcal mol(-1)). Notably, due to the well-defined nanopores and structural organization, a constructed full cell, displays a discharge capacity as high as 276 mA h g(-1) at a current rate of 125 mA g(-1).
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