Issue 33, 2024

Redox-active conductive metal–organic framework with high lithium capacities at low temperatures

Abstract

Lithium-ion batteries suffer from reduced capacities and stabilities at low temperature due to poor Li intercalation to the graphite anode. Graphite has a high activation energy (∼0.6 eV) to accommodate Li ions, resulting in a substantial capacity drop at low temperatures. Additionally, it can induce the formation of Li dendrites on the surface of graphite. To address this issue, we designed and synthesized a redox-active fluorothianthrene-based MOF (SKIER-5). SKIER-5, which undergoes three-electron redox reactions resulting from the fluorothianthrene-based organic ligand and Ni, exhibited excellent electrochemical performance at various temperatures when used as an anode. In particular, the discharge capacities of SKIER-5 were significantly higher than those of commercial graphite at low temperatures (<−10 °C) because of the lower activation energy (∼0.23 eV) for charge transfer. Moreover, it maintained stability when cycled at −20 °C, highlighting its potential as a promising anode material in low-temperature environments.

Graphical abstract: Redox-active conductive metal–organic framework with high lithium capacities at low temperatures

Associated articles

Supplementary files

Article information

Article type
Paper
Submitted
16 Mar 2024
Accepted
11 Jul 2024
First published
12 Jul 2024
This article is Open Access
Creative Commons BY-NC license

J. Mater. Chem. A, 2024,12, 21732-21743

Redox-active conductive metal–organic framework with high lithium capacities at low temperatures

Y. Kumar, T. H. Kim, I. Subiyanto, W. Devina, S. Byun, S. Nandy, K. H. Chae, S. Lim, B. Kim, S. Kang, S. O. Han, K. Yim, J. Yoo and H. Kim, J. Mater. Chem. A, 2024, 12, 21732 DOI: 10.1039/D4TA01779J

This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. You can use material from this article in other publications, without requesting further permission from the RSC, provided that the correct acknowledgement is given and it is not used for commercial purposes.

To request permission to reproduce material from this article in a commercial publication, 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 commercial 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