The development of organic-based systems for use in redox flow batteries
Organic compounds possess tremendous potential for energy storage as they are structural diverse and synthetically tuneable. Anthraquinone and o-tolidine displayed good chemical reversibility between their reduced and oxidised forms in the presence of trifluoroacetic acid. In a mixed reactant system...
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sg-ntu-dr.10356-1525252023-02-28T23:56:18Z The development of organic-based systems for use in redox flow batteries Shi, Raymond Rongsheng Richard D. Webster School of Physical and Mathematical Sciences Webster@ntu.edu.sg Science::Chemistry Organic compounds possess tremendous potential for energy storage as they are structural diverse and synthetically tuneable. Anthraquinone and o-tolidine displayed good chemical reversibility between their reduced and oxidised forms in the presence of trifluoroacetic acid. In a mixed reactant system (where both compounds existed together in solution), they were chemically compatible and stable under various conditions. The system also possessed two-electron per molecule transfer capability which is useful in designing a high energy battery system. With a controlled amount of diethyl malonate (DEM), the redox potential of vitamin K analogue (VKA) can be tuned to achieve a higher cell voltage. As such, the mixed reactant system comprising chemically modified VKA (VKA1) and a vitamin E analogue (VEA) exhibits an operational cell voltage of 1.23 V. The mixed reactants remain functional over a wide range of expected operational conditions, making it a reliable and stable organic-based electrolyte systems that is applicable towards the development of an all-organic battery for RFB applications. Doctor of Philosophy 2021-08-30T00:49:51Z 2021-08-30T00:49:51Z 2021 Thesis-Doctor of Philosophy Shi, R. R. (2021). The development of organic-based systems for use in redox flow batteries. Doctoral thesis, Nanyang Technological University, Singapore. https://hdl.handle.net/10356/152525 https://hdl.handle.net/10356/152525 10.32657/10356/152525 en This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0). application/pdf Nanyang Technological University |
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Science::Chemistry Shi, Raymond Rongsheng The development of organic-based systems for use in redox flow batteries |
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Organic compounds possess tremendous potential for energy storage as they are structural diverse and synthetically tuneable. Anthraquinone and o-tolidine displayed good chemical reversibility between their reduced and oxidised forms in the presence of trifluoroacetic acid. In a mixed reactant system (where both compounds existed together in solution), they were chemically compatible and stable under various conditions. The system also possessed two-electron per molecule transfer capability which is useful in designing a high energy battery system. With a controlled amount of diethyl malonate (DEM), the redox potential of vitamin K analogue (VKA) can be tuned to achieve a higher cell voltage. As such, the mixed reactant system comprising chemically modified VKA (VKA1) and a vitamin E analogue (VEA) exhibits an operational cell voltage of 1.23 V. The mixed reactants remain functional over a wide range of expected operational conditions, making it a reliable and stable organic-based electrolyte systems that is applicable towards the development of an all-organic battery for RFB applications. |
author2 |
Richard D. Webster |
author_facet |
Richard D. Webster Shi, Raymond Rongsheng |
format |
Thesis-Doctor of Philosophy |
author |
Shi, Raymond Rongsheng |
author_sort |
Shi, Raymond Rongsheng |
title |
The development of organic-based systems for use in redox flow batteries |
title_short |
The development of organic-based systems for use in redox flow batteries |
title_full |
The development of organic-based systems for use in redox flow batteries |
title_fullStr |
The development of organic-based systems for use in redox flow batteries |
title_full_unstemmed |
The development of organic-based systems for use in redox flow batteries |
title_sort |
development of organic-based systems for use in redox flow batteries |
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Nanyang Technological University |
publishDate |
2021 |
url |
https://hdl.handle.net/10356/152525 |
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1759857607510589440 |