Revealing the Mg-Ion Storage Mechanism within a Covalent Organic Framework Electrode


Wright, MA ORCID: 0000-0003-0617-3992, Neale, AR ORCID: 0000-0001-7675-5432, Acín-Lalanza, A, Gao, H, Rosseinsky, MJ ORCID: 0000-0002-1910-2483, Cooper, AI ORCID: 0000-0003-0201-1021 and Hardwick, LJ ORCID: 0000-0001-8796-685X (2025) Revealing the Mg-Ion Storage Mechanism within a Covalent Organic Framework Electrode ACS Applied Energy Materials, 8 (22). pp. 16451-16456. ISSN 2574-0962, 2574-0962

Access the full-text of this item by clicking on the Open Access link.

Abstract

Magnesium batteries offer a promising alternative to lithium-ion systems, but suitable electrodes remain limited. Covalent organic frameworks (COFs) are attractive candidates due to their structural tunability and open channels for ion transport. We report a pyrene- 4,5,9,10-tetraone COF composite with carbon nanotubes as a Mg electrode, delivering 70 mAh g–1at 200 mA g–1and operating at 1.3 V. In situ Raman spectroscopy confirms carbonyl-centered redox on pyrene tetraone, supporting a Mg2+-driven carbonyl reduction. Compared with Li+, only partial carbonyl utilization occurs, attributed to steric and electrostatic constraints of divalent Mg2+. This incomplete conversion to magnesium-enolate inspires future work toward structural optimization.

Item Type: Article
Uncontrolled Keywords: Covalent Organic Framework, <italic>In Situ</italic> Raman, Mg Battery, Battery Materials, Organic Electrodes, Raman Spectroscopy
Divisions: Faculty of Science & Engineering
Faculty of Science & Engineering > School of Physical Sciences
Faculty of Science & Engineering > School of Physical Sciences > Chemistry
Depositing User: Symplectic Admin
Date Deposited: 02 Dec 2025 16:20
Last Modified: 28 Feb 2026 14:33
DOI: 10.1021/acsaem.5c03247
Open Access URL: https://doi.org//10.1021/acsaem.5c03247
Related Websites:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3195789
Disclaimer: The University of Liverpool is not responsible for content contained on other websites from links within repository metadata. Please contact us if you notice anything that appears incorrect or inappropriate.
Altmetric
CORE (COnnecting REpositories)