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Updated: Jan 10, 2026
Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
Published on: June 9, 2023
Revealing the Mg-Ion Storage Mechanism within a Covalent Organic Framework Electrode
Matthew A Wright1,2,3,4, Alex R Neale1,3,4, Andrés Acín-Lalanza1,2,3
1Department of Chemistry, University of Liverpool, Liverpool L697ZD, United Kingdom.
None:
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-1 at 200 mA g-1 and 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.
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