Investigation of Tetramorpholinohydroquinone as a Potential Catholyte in a Flow Battery

Emil Drazevic, Casaba Szabo, Denes Konya, Torben Lund, Kristina Wedege, Anders Bentien

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Resumé

Redox flow batteries (RFB) based on organic redox active species have low-cost potential for large-scale electrical energy storage. Currently, there are a range of organic molecules as candidates for the negative side of the RFB, e.g. anthraquinones and alloxazines. However, for the positive side there is no obvious organic molecules mainly because of too low stability and to a lesser extend a low standard potential. Currently, a stable performance was achieved only with inorganic or organo-inorganic species at the positive side, e.g. bromine, ferricyanide, and water-soluble derivatives of ferrocene. Previous attempts to utilize hydroquinones at the positive side, such as 4,5-dibenzoquinone-1,3-benzene disulfonate, or water-soluble derivations of 2,2,6,6-Tetramethyl-1-piperidinyloxy, results in unstable battery performance. Based on the available literature it appears as if unsubstituted and partially unsubstituted hydroquinones are not stable in water. For this reason a new fully substituted hydroquinone was specifically designed and examined for the positive side of the organic RFB in symmetric RFB setup. It has four fully protonated morpholino groups and a solubility of 2 M (107 Ah/L) in water and a formal redox potential of 0.89 VNHE.
OriginalsprogEngelsk
TidsskriftACS Applied Energy Materials
Vol/bind2
Udgave nummer7
Sider (fra-til)4745-4754
Antal sider10
ISSN2574-0962
DOI
StatusUdgivet - 17 jun. 2019

Emneord

  • organic redox species, redox flow battery, catholyte, quinone

Citer dette

Drazevic, Emil ; Szabo, Casaba ; Konya, Denes ; Lund, Torben ; Wedege, Kristina ; Bentien, Anders. / Investigation of Tetramorpholinohydroquinone as a Potential Catholyte in a Flow Battery. I: ACS Applied Energy Materials. 2019 ; Bind 2, Nr. 7. s. 4745-4754.
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abstract = "Redox flow batteries (RFB) based on organic redox active species have low-cost potential for large-scale electrical energy storage. Currently, there are a range of organic molecules as candidates for the negative side of the RFB: e.g., anthraquinones and alloxazines. However, for the positive side there are no obvious organic molecules mainly because of stability that is too low and to a lesser extent a low standard potential. Currently, a stable performance has been achieved only with inorganic or organo-inorganic species at the positive side: e.g., bromine, ferricyanide, and water-soluble derivatives of ferrocene. Previous attempts to utilize hydroquinones at the positive side, such as 4,5-dibenzoquinone-1,3-benzenedisulfonate, or water-soluble derivations of 2,2,6,6-tetramethyl-1-piperidinyloxy resulted in unstable battery performance. On the basis of the available literature it appears as if unsubstituted and partially unsubstituted hydroquinones are not stable in water. For this reason a new fully substituted hydroquinone was specifically designed and examined for the positive side of the organic RFB in a symmetric RFB setup. It has four fully protonated morpholino groups, a solubility of 2 M (107 Ah/L) in water, and a formal redox potential of 0.89 VNHE; however, its performance is highly dependent on the pH and the electrolyte composition.",
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Investigation of Tetramorpholinohydroquinone as a Potential Catholyte in a Flow Battery. / Drazevic, Emil; Szabo, Casaba; Konya, Denes ; Lund, Torben; Wedege, Kristina; Bentien, Anders.

I: ACS Applied Energy Materials, Bind 2, Nr. 7, 17.06.2019, s. 4745-4754.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Investigation of Tetramorpholinohydroquinone as a Potential Catholyte in a Flow Battery

AU - Drazevic, Emil

AU - Szabo, Casaba

AU - Konya, Denes

AU - Lund, Torben

AU - Wedege, Kristina

AU - Bentien, Anders

PY - 2019/6/17

Y1 - 2019/6/17

N2 - Redox flow batteries (RFB) based on organic redox active species have low-cost potential for large-scale electrical energy storage. Currently, there are a range of organic molecules as candidates for the negative side of the RFB: e.g., anthraquinones and alloxazines. However, for the positive side there are no obvious organic molecules mainly because of stability that is too low and to a lesser extent a low standard potential. Currently, a stable performance has been achieved only with inorganic or organo-inorganic species at the positive side: e.g., bromine, ferricyanide, and water-soluble derivatives of ferrocene. Previous attempts to utilize hydroquinones at the positive side, such as 4,5-dibenzoquinone-1,3-benzenedisulfonate, or water-soluble derivations of 2,2,6,6-tetramethyl-1-piperidinyloxy resulted in unstable battery performance. On the basis of the available literature it appears as if unsubstituted and partially unsubstituted hydroquinones are not stable in water. For this reason a new fully substituted hydroquinone was specifically designed and examined for the positive side of the organic RFB in a symmetric RFB setup. It has four fully protonated morpholino groups, a solubility of 2 M (107 Ah/L) in water, and a formal redox potential of 0.89 VNHE; however, its performance is highly dependent on the pH and the electrolyte composition.

AB - Redox flow batteries (RFB) based on organic redox active species have low-cost potential for large-scale electrical energy storage. Currently, there are a range of organic molecules as candidates for the negative side of the RFB: e.g., anthraquinones and alloxazines. However, for the positive side there are no obvious organic molecules mainly because of stability that is too low and to a lesser extent a low standard potential. Currently, a stable performance has been achieved only with inorganic or organo-inorganic species at the positive side: e.g., bromine, ferricyanide, and water-soluble derivatives of ferrocene. Previous attempts to utilize hydroquinones at the positive side, such as 4,5-dibenzoquinone-1,3-benzenedisulfonate, or water-soluble derivations of 2,2,6,6-tetramethyl-1-piperidinyloxy resulted in unstable battery performance. On the basis of the available literature it appears as if unsubstituted and partially unsubstituted hydroquinones are not stable in water. For this reason a new fully substituted hydroquinone was specifically designed and examined for the positive side of the organic RFB in a symmetric RFB setup. It has four fully protonated morpholino groups, a solubility of 2 M (107 Ah/L) in water, and a formal redox potential of 0.89 VNHE; however, its performance is highly dependent on the pH and the electrolyte composition.

KW - organic redox species, redox flow battery, catholyte, quinone

UR - https://pubs.acs.org/doi/suppl/10.1021/acsaem.9b00351/suppl_file/ae9b00351_si_001.pdf

U2 - 10.1021/acsaem.9b00351

DO - 10.1021/acsaem.9b00351

M3 - Journal article

VL - 2

SP - 4745

EP - 4754

JO - ACS Applied Energy Materials

JF - ACS Applied Energy Materials

SN - 2574-0962

IS - 7

ER -