Investigations into aqueous redox flow batteries based on ferrocene bisulfonate

Zhiling Zhao; Baosen Zhang; Briana R. Schrage; Christopher J. Ziegler; Aliaksei Boika

doi:10.1021/acsaem.0c02259

Investigations into aqueous redox flow batteries based on ferrocene bisulfonate

Zhiling Zhao, Baosen Zhang, Briana R. Schrage, Christopher J. Ziegler, Aliaksei Boika

Research output: Contribution to journal › Article › peer-review

30 Scopus citations

Abstract

The successful implementation of redox flow battery (RFB) technology requires the development of highly stable and soluble catholyte and anolyte materials that could be used in aqueous media. In this work, we investigated a highly soluble derivative of ferrocene-1,1'-bis(sulfonate)- ferrocene dianion disodium salt-as a possible catholyte in an all-anionic RFB design. Based on the results of cyclic voltammetry and charge/discharge cycling experiments, we determined that this compound can be unstable and prone to a nucleophilic attack by anions in certain supporting electrolytes. However, it is stable in neutral pH solutions with weak nucleophilic anions like nitrate. These findings are fundamental for the future development of improved RFB materials.

Original language	English
Pages (from-to)	10270-10277
Number of pages	8
Journal	ACS Applied Energy Materials
Volume	3
Issue number	10
DOIs	https://doi.org/10.1021/acsaem.0c02259
State	Published - Oct 26 2020
Externally published	Yes

Funding

The authors are grateful to The University of Akron and the National Science Foundation (CHE-1665267) for support of this research.

Funders	Funder number
National Science Foundation	CHE-1665267, 1665267
University of Akron

Keywords

Anionic catholyte
Charge/discharge
Cyclic voltammetry
Flow cell
Water-soluble ferrocene

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10.1021/acsaem.0c02259

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abstract = "The successful implementation of redox flow battery (RFB) technology requires the development of highly stable and soluble catholyte and anolyte materials that could be used in aqueous media. In this work, we investigated a highly soluble derivative of ferrocene-1,1'-bis(sulfonate)- ferrocene dianion disodium salt-as a possible catholyte in an all-anionic RFB design. Based on the results of cyclic voltammetry and charge/discharge cycling experiments, we determined that this compound can be unstable and prone to a nucleophilic attack by anions in certain supporting electrolytes. However, it is stable in neutral pH solutions with weak nucleophilic anions like nitrate. These findings are fundamental for the future development of improved RFB materials.",

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AU - Boika, Aliaksei

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Investigations into aqueous redox flow batteries based on ferrocene bisulfonate

Abstract

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