Issue 21, 2023

A nickel-based metal–organic framework as a new cathode for chloride ion batteries with superior cycling stability

Abstract

Chloride ion batteries (CIBs) have drawn growing attention as attractive candidates for large-scale energy storage technology because of their high theoretical energy densities (2500 W h L−1), dendrite-free characteristics and abundance of chloride-containing materials available worldwide. However, the further development of CIBs is greatly limited by sluggish Cl diffusion and distinct structural variation of cathode materials, resulting in severe decayed capacity and inferior rate performance. Metal–organic framework (MOF) materials possess regular pores/channels and flexible structural designability to accommodate charge carrier ions, but the application of MOFs in anion-type batteries has not been reported. Here, we demonstrate the first example of Ni(dpip) with two different opening sizes of tubular channels serving as the cathode for high performance CIBs. The Ni-based MOF exhibited a stable reversible capacity of 155 mA h g−1 with an admirable low capacity decay of 0.026% per cycle over 500 cycles and superior kinetics with a 10−10 cm2 s−1 average diffusion coefficient for chloride ions as well. The high performance of the Ni(dpip) cathode results from the synergetic redox couples of Ni metal nodes and N-ligands, the unique double-channel structure for reversible Cl-storage, and the low chloride diffusion energy barrier. This work switches on the new application of MOF-based materials as cathodes for CIBs.

Graphical abstract: A nickel-based metal–organic framework as a new cathode for chloride ion batteries with superior cycling stability

Supplementary files

Article information

Article type
Edge Article
Submitted
22 3 2023
Accepted
23 4 2023
First published
24 4 2023
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., 2023,14, 5643-5649

A nickel-based metal–organic framework as a new cathode for chloride ion batteries with superior cycling stability

Q. Yin, Z. Song, S. Yang, G. Wang, Y. Sui, J. Qi, D. Zhao, L. Hou and Y. Li, Chem. Sci., 2023, 14, 5643 DOI: 10.1039/D3SC01497E

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