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Designing Cr complexes for a neutral Fe–Cr redox flow battery

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Abstract

We lay out the design principles of Cr complexes to address issues of slow kinetics and parasitic reactions in the Fe–Cr redox flow battery (ICRFB). We identify theoretically and experimentally dipicolinic acid as a promising ligand, and synthesize its derivative to improve the solubility of the Cr complex to 0.7 M. We couple it with ferrocyanide for a neutral ICRFB delivering 120 stable cycles.

Graphical abstract: Designing Cr complexes for a neutral Fe–Cr redox flow battery

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Article information


Submitted
17 Dec 2019
Accepted
11 Feb 2020
First published
11 Feb 2020

Chem. Commun., 2020, Advance Article
Article type
Communication

Designing Cr complexes for a neutral Fe–Cr redox flow battery

W. Ruan, J. Mao, S. Yang, C. Shi, G. Jia and Q. Chen, Chem. Commun., 2020, Advance Article , DOI: 10.1039/C9CC09704J

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