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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Main Author: Shi, Raymond Rongsheng
Other Authors: Richard D. Webster
Format: Thesis-Doctor of Philosophy
Language:English
Published: Nanyang Technological University 2021
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Online Access:https://hdl.handle.net/10356/152525
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Institution: Nanyang Technological University
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spelling 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
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Science::Chemistry
spellingShingle Science::Chemistry
Shi, Raymond Rongsheng
The development of organic-based systems for use in redox flow batteries
description 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
publisher Nanyang Technological University
publishDate 2021
url https://hdl.handle.net/10356/152525
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