Molecular Engineering Strategies for Symmetric Aqueous Organic Redox Flow Batteries

Rocco Peter Fornari, Murat Mesta, Johan Hjelm, Tejs Vegge, Piotr de Silva*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Symmetric aqueous organic redox flow batteries (RFBs) are potentially a cheap, durable and safe energy storage technology. Unlike normal asymmetric flow batteries, they are based on electrolytes that exist in at least three oxidation states and can undergo a minimum of two distinct redox processes. We compute the redox potentials of selected electrolytes intending to understand how the interaction between the redox units affects the potentials. We find that electronic interaction between redox units and intramolecular hydrogen bonding can both be exploited to tune the difference between the redox potentials, i.e. the theoretical voltage of the battery. The redox potentials can be further fine-tuned in either direction by adding substituents. Starting from these observations we formulate a set of rules which will help finding ideal candidates for symmetric RFBs.
Original languageEnglish
JournalACS Materials Letters
ISSN2639-4979
DOIs
Publication statusAccepted/In press - 2020

Cite this

@article{0971eddd28d248a690ef0551352872ea,
title = "Molecular Engineering Strategies for Symmetric Aqueous Organic Redox Flow Batteries",
abstract = "Symmetric aqueous organic redox flow batteries (RFBs) are potentially a cheap, durable and safe energy storage technology. Unlike normal asymmetric flow batteries, they are based on electrolytes that exist in at least three oxidation states and can undergo a minimum of two distinct redox processes. We compute the redox potentials of selected electrolytes intending to understand how the interaction between the redox units affects the potentials. We find that electronic interaction between redox units and intramolecular hydrogen bonding can both be exploited to tune the difference between the redox potentials, i.e. the theoretical voltage of the battery. The redox potentials can be further fine-tuned in either direction by adding substituents. Starting from these observations we formulate a set of rules which will help finding ideal candidates for symmetric RFBs.",
author = "Fornari, {Rocco Peter} and Murat Mesta and Johan Hjelm and Tejs Vegge and {de Silva}, Piotr",
year = "2020",
doi = "10.1021/acsmaterialslett.0c00028",
language = "English",
journal = "ACS Materials Letters",
issn = "2639-4979",
publisher = "ACS Publications",

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Molecular Engineering Strategies for Symmetric Aqueous Organic Redox Flow Batteries. / Fornari, Rocco Peter; Mesta, Murat; Hjelm, Johan; Vegge, Tejs; de Silva, Piotr.

In: ACS Materials Letters , 2020.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Molecular Engineering Strategies for Symmetric Aqueous Organic Redox Flow Batteries

AU - Fornari, Rocco Peter

AU - Mesta, Murat

AU - Hjelm, Johan

AU - Vegge, Tejs

AU - de Silva, Piotr

PY - 2020

Y1 - 2020

N2 - Symmetric aqueous organic redox flow batteries (RFBs) are potentially a cheap, durable and safe energy storage technology. Unlike normal asymmetric flow batteries, they are based on electrolytes that exist in at least three oxidation states and can undergo a minimum of two distinct redox processes. We compute the redox potentials of selected electrolytes intending to understand how the interaction between the redox units affects the potentials. We find that electronic interaction between redox units and intramolecular hydrogen bonding can both be exploited to tune the difference between the redox potentials, i.e. the theoretical voltage of the battery. The redox potentials can be further fine-tuned in either direction by adding substituents. Starting from these observations we formulate a set of rules which will help finding ideal candidates for symmetric RFBs.

AB - Symmetric aqueous organic redox flow batteries (RFBs) are potentially a cheap, durable and safe energy storage technology. Unlike normal asymmetric flow batteries, they are based on electrolytes that exist in at least three oxidation states and can undergo a minimum of two distinct redox processes. We compute the redox potentials of selected electrolytes intending to understand how the interaction between the redox units affects the potentials. We find that electronic interaction between redox units and intramolecular hydrogen bonding can both be exploited to tune the difference between the redox potentials, i.e. the theoretical voltage of the battery. The redox potentials can be further fine-tuned in either direction by adding substituents. Starting from these observations we formulate a set of rules which will help finding ideal candidates for symmetric RFBs.

U2 - 10.1021/acsmaterialslett.0c00028

DO - 10.1021/acsmaterialslett.0c00028

M3 - Journal article

JO - ACS Materials Letters

JF - ACS Materials Letters

SN - 2639-4979

ER -