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Anthraquinone-2,6-disulfamidic acid: an anolyte with low decomposition rates at elevated temperatures.

ABSTRACT: A new sulfamidic acid anthraquinone derivative was synthesized from 2,6-diaminoanthraquinone with high yields, designed for utilization in redox flow batteries. The active material was investigated with cyclic voltammetry, revealing a reversible redox reaction at approximately -0.65 V vs. Ag/AgCl at pH-values above 12. A stress test in a redox flow battery was applied with hold times at critical states of charge and at 32 °C as well as at 60 °C. Furthermore, the stability was investigated at the maximum concentration of the anolyte. All in all, the material showed the lowest decomposition rates at 60 °C reported so far for an organic anolyte in a redox flow battery.

SUBMITTER: Rohland P

PROVIDER: S-EPMC9044267 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature

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Anthraquinone-2,6-disulfamidic acid: an anolyte with low decomposition rates at elevated temperatures.

Rohland Philip P Schreyer Kristin K Hager Martin D MD Schubert Ulrich S US

RSC advances 20211101 61

A new sulfamidic acid anthraquinone derivative was synthesized from 2,6-diaminoanthraquinone with high yields, designed for utilization in redox flow batteries. The active material was investigated with cyclic voltammetry, revealing a reversible redox reaction at approximately -0.65 V vs. Ag/AgCl at pH-values above 12. A stress test in a redox flow battery was applied with hold times at critical states of charge and at 32 °C as well as at 60 °C. Furthermore, the stability was investigated ...[more]

PMID: 35493233

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