Investigation of Tetramorpholinohydroquinone as a Potential Catholyte in a Flow Battery
| Autor: | Kristina Wedege, Emil Drazevic, Torben Lund, Anders Bentien, Casaba Szabo, Denes Konya |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
EXCHANGE MEMBRANES
PH Energy Engineering and Power Technology ANOLYTE 02 engineering and technology 010402 general chemistry 01 natural sciences Redox high water solubility Organic molecules CAPACITY Materials Chemistry Electrochemistry Chemical Engineering (miscellaneous) Redox active organic redox species Electrical and Electronic Engineering STABILITY Chemistry catholyte 021001 nanoscience & nanotechnology Flow battery SAFE 0104 chemical sciences Electrical energy storage Quinone hydroquinone Chemical engineering redox flow battery all-organic battery 0210 nano-technology STORAGE |
| Zdroj: | Drazevic, E, Szabo, C, Konya, D, Lund, T, Wedege, K & Bentien, A 2019, ' Investigation of Tetramorpholinohydroquinone as a Potential Catholyte in a Flow Battery ', ACS Applied Energy Materials, vol. 2, no. 7, pp. 4745-4754 . https://doi.org/10.1021/acsaem.9b00351 |
| DOI: | 10.1021/acsaem.9b00351 |
| Popis: | 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 V-NHE; however, its performance is highly dependent on the pH and the electrolyte composition. |
| Databáze: | OpenAIRE |
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