Highly Soluble Imidazolium Ferrocene Bis(sulfonate) Salts for Redox Flow Battery Applications

Briana R. Schrage; Baosen Zhang; Stephen C. Petrochko; Zhiling Zhao; Ariana Frkonja-Kuczin; Aliaksei Boika; Christopher J. Ziegler

doi:10.1021/acs.inorgchem.1c01473

Highly Soluble Imidazolium Ferrocene Bis(sulfonate) Salts for Redox Flow Battery Applications

Briana R. Schrage
, Baosen Zhang
, Stephen C. Petrochko
, Zhiling Zhao
, Ariana Frkonja-Kuczin
, Aliaksei Boika
, Christopher J. Ziegler

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

17 Scopus citations

Abstract

Redox flow batteries (RFBs) are scalable devices that employ solution-based redox active components for scalable energy storage. To maximize energy density, new highly soluble catholytes and anolytes need to be synthesized and evaluated for their electrochemical performance. To that end, we synthesized a series of imidazolium ferrocene bis(sulfonate) salts as highly soluble catholytes for RFB applications. Six salts with differing alkyl chain lengths on the imidazolium cation were synthesized, characterized, and electrochemically analyzed. While aqueous solubility was significantly improved, the reactivity of the imidazolium cation and the increased viscosities of the salt solutions in water (which increase with increasing imidazolium chain length) limit the applicability of these materials to RFB design.

Original language	English
Pages (from-to)	10764-10771
Number of pages	8
Journal	Inorganic Chemistry
Volume	60
Issue number	14
DOIs	https://doi.org/10.1021/acs.inorgchem.1c01473
State	Published - Jul 19 2021
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.

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10.1021/acs.inorgchem.1c01473

Cite this

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title = "Highly Soluble Imidazolium Ferrocene Bis(sulfonate) Salts for Redox Flow Battery Applications",

abstract = "Redox flow batteries (RFBs) are scalable devices that employ solution-based redox active components for scalable energy storage. To maximize energy density, new highly soluble catholytes and anolytes need to be synthesized and evaluated for their electrochemical performance. To that end, we synthesized a series of imidazolium ferrocene bis(sulfonate) salts as highly soluble catholytes for RFB applications. Six salts with differing alkyl chain lengths on the imidazolium cation were synthesized, characterized, and electrochemically analyzed. While aqueous solubility was significantly improved, the reactivity of the imidazolium cation and the increased viscosities of the salt solutions in water (which increase with increasing imidazolium chain length) limit the applicability of these materials to RFB design.",

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doi = "10.1021/acs.inorgchem.1c01473",

language = "English",

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AU - Schrage, Briana R.

AU - Zhang, Baosen

AU - Petrochko, Stephen C.

AU - Zhao, Zhiling

AU - Frkonja-Kuczin, Ariana

AU - Boika, Aliaksei

AU - Ziegler, Christopher J.

PY - 2021/7/19

Y1 - 2021/7/19

N2 - Redox flow batteries (RFBs) are scalable devices that employ solution-based redox active components for scalable energy storage. To maximize energy density, new highly soluble catholytes and anolytes need to be synthesized and evaluated for their electrochemical performance. To that end, we synthesized a series of imidazolium ferrocene bis(sulfonate) salts as highly soluble catholytes for RFB applications. Six salts with differing alkyl chain lengths on the imidazolium cation were synthesized, characterized, and electrochemically analyzed. While aqueous solubility was significantly improved, the reactivity of the imidazolium cation and the increased viscosities of the salt solutions in water (which increase with increasing imidazolium chain length) limit the applicability of these materials to RFB design.

AB - Redox flow batteries (RFBs) are scalable devices that employ solution-based redox active components for scalable energy storage. To maximize energy density, new highly soluble catholytes and anolytes need to be synthesized and evaluated for their electrochemical performance. To that end, we synthesized a series of imidazolium ferrocene bis(sulfonate) salts as highly soluble catholytes for RFB applications. Six salts with differing alkyl chain lengths on the imidazolium cation were synthesized, characterized, and electrochemically analyzed. While aqueous solubility was significantly improved, the reactivity of the imidazolium cation and the increased viscosities of the salt solutions in water (which increase with increasing imidazolium chain length) limit the applicability of these materials to RFB design.

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DO - 10.1021/acs.inorgchem.1c01473

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JO - Inorganic Chemistry

JF - Inorganic Chemistry

IS - 14

ER -

Highly Soluble Imidazolium Ferrocene Bis(sulfonate) Salts for Redox Flow Battery Applications

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