Issue 24, 2023

Open-framework aluminum hexacyanoferrate as a cathode material for high voltage aqueous zinc-ion batteries: effect of Al3+ cations on three-phase transition of AlFe(CN)6

Abstract

Aqueous zinc-ion batteries (AZIBs) are considered promising energy storage devices for future large-scale energy storage systems due to their high safety, low production cost, and non-combustibility. However, low operating voltage and energy output are still drawbacks in their practical applications. Herein, we develop a cubic aluminum hexacyanoferrate/graphene high-voltage cathode material for rechargeable AZIBs, and it exhibits an activation process and can deliver a high output voltage of 1.8 V (vs. Zn/Zn2+) with a specific energy density of 125.56 W h kg−1. The voltage is increased by stretching the Fe–C bonds in the Fe–C[triple bond, length as m-dash]N–Al covalent structure. The reversible phase transformation between cubic AlFe(CN)6 and cubic–orthorhombic–monoclinic Zn0.5AlFe(CN)6 occurs with the intercalation/extraction of zinc ions, and the coordination environment of Al plays a decisive role in this key process. This work will provide a feasible reference for the structural design of high-voltage Prussian blue analog cathode materials.

Graphical abstract: Open-framework aluminum hexacyanoferrate as a cathode material for high voltage aqueous zinc-ion batteries: effect of Al3+ cations on three-phase transition of AlFe(CN)6

Supplementary files

Article information

Article type
Research Article
Submitted
28 Aug 2023
Accepted
24 Oct 2023
First published
03 Nov 2023

Inorg. Chem. Front., 2023,10, 7274-7284

Open-framework aluminum hexacyanoferrate as a cathode material for high voltage aqueous zinc-ion batteries: effect of Al3+ cations on three-phase transition of AlFe(CN)6

Y. Kong, Y. Xiao, S. Zhang, L. Chen, Z. Liu and Y. Wang, Inorg. Chem. Front., 2023, 10, 7274 DOI: 10.1039/D3QI01725G

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements