Redox-inactive ions control the redox-activity of molecular vanadium oxides

Greiner S, Schwarz B, Ringenberg M, Dürr M, Ivanovic-Burmazovic I, Fichtner M, Anjass M, Streb C (2020)

Publication Type: Journal article

Publication year: 2020

Journal

Chemical Science Royal Society of Chemistry

Book Volume: 11

Pages Range: 4450-4455

Journal Issue: 17

DOI: 10.1039/d0sc01401j

Abstract

Polyoxometalates are key materials for energy conversion and storage due to their unique chemical tunability and electrochemical reactivity. Herein, we report that functionalization of molecular vanadium oxides, polyoxovanadates, with redox-inert Ca2+cations leads to a significant increase in their electron storage capabilities. The electrochemical performance of the Ca2+-functionalized dodecavanadate [Ca2V12O32Cl(DMF)3]2−(={Ca2V12}) was thus compared with that of the precursor compound (H2NMe2)2[V12O32Cl]3−(={V12}).{Ca2V12}can store up to five electrons per cluster, while{V12}only shows one reversible redox transition. In initial studies, we demonstrated that{Ca2V12}can be used as an active material in lithium-ion cathodes. Our results show how redox-inert cations can be used as structural and electrostatic stabilizers, leading to major changes in the redox-chemistry of polyoxovanadates.

Authors with CRIS profile

Maximilian Dürr Lehrstuhl für Bioanorganische Chemie Ivana Ivanovic-Burmazovic Lehrstuhl für Bioanorganische Chemie

Involved external institutions

Universität Ulm DE Germany (DE) Universität Stuttgart DE Germany (DE) Helmholtz Institut Ulm DE Germany (DE)

How to cite

APA:

Greiner, S., Schwarz, B., Ringenberg, M., Dürr, M., Ivanovic-Burmazovic, I., Fichtner, M.,... Streb, C. (2020). Redox-inactive ions control the redox-activity of molecular vanadium oxides. Chemical Science, 11(17), 4450-4455. https://doi.org/10.1039/d0sc01401j

MLA:

Greiner, Simon, et al. "Redox-inactive ions control the redox-activity of molecular vanadium oxides." Chemical Science 11.17 (2020): 4450-4455.

BibTeX: Download