Issue 38, 2019

Zinc ion interactions in a two-dimensional covalent organic framework based aqueous zinc ion battery

Abstract

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 β-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.

Graphical abstract: Zinc ion interactions in a two-dimensional covalent organic framework based aqueous zinc ion battery

Supplementary files

Article information

Article type
Edge Article
Submitted
20 Jun 2019
Accepted
02 Aug 2019
First published
06 Aug 2019
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY-NC license

Chem. Sci., 2019,10, 8889-8894

Zinc ion interactions in a two-dimensional covalent organic framework based aqueous zinc ion battery

A. Khayum M, M. Ghosh, V. Vijayakumar, A. Halder, M. Nurhuda, S. Kumar, M. Addicoat, S. Kurungot and R. Banerjee, Chem. Sci., 2019, 10, 8889 DOI: 10.1039/C9SC03052B

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