Sulfonated tryptanthrin anolyte increases performance in pH neutral aqueous redox flow batteries

Detalhes bibliográficos
Autor(a) principal: Pinheiro, Daniela
Data de Publicação: 2021
Outros Autores: Pineiro, Marta, Melo, J. Sérgio Seixas de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10316/107458
https://doi.org/10.1038/s42004-021-00523-0
Resumo: Aqueous organic redox flow batteries (AORFBs) hold great promise as low-cost, environmentally friendly and safe alternative energy storage media. Here we present aqueous organometallic and all-organic active materials for RFBs with a water-soluble active material, sulfonated tryptanthrin (TRYP-SO3H), working at a neutral pH and showing long-term stability. Electrochemical measurements show that TRYP-SO3H displays reversible peaks at neutral pH values, allowing its use as an anolyte combined with potassium ferrocyanide or 4,5-dihydroxy-1,3-benzenedisulfonic acid disodium salt monohydrate as catholytes. Single cell tests show reproducible charge-discharge cycles for both catholytes, with significantly improved results for the aqueous all-organic RFB reaching high cell voltage (0.94 V) and high energy efficiencies, stabilized during at least 50 working cycles.
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spelling Sulfonated tryptanthrin anolyte increases performance in pH neutral aqueous redox flow batteriesAqueous organic redox flow batteries (AORFBs) hold great promise as low-cost, environmentally friendly and safe alternative energy storage media. Here we present aqueous organometallic and all-organic active materials for RFBs with a water-soluble active material, sulfonated tryptanthrin (TRYP-SO3H), working at a neutral pH and showing long-term stability. Electrochemical measurements show that TRYP-SO3H displays reversible peaks at neutral pH values, allowing its use as an anolyte combined with potassium ferrocyanide or 4,5-dihydroxy-1,3-benzenedisulfonic acid disodium salt monohydrate as catholytes. Single cell tests show reproducible charge-discharge cycles for both catholytes, with significantly improved results for the aqueous all-organic RFB reaching high cell voltage (0.94 V) and high energy efficiencies, stabilized during at least 50 working cycles.This work was supported by Projects “Hylight” (No. 031625) 02/SAICT/2017, PTDC/ QUI-QFI/31625/2017, which is funded by the Portuguese Science Foundation (FCT) and Compete Centro 2020 and project “SunStorage - Harvesting and storage of solar energy”, reference POCI-01-0145-FEDER-016387, funded by European Regional Development Fund (ERDF), through COMPETE 2020—Operational Program for Competitiveness and Internationalization (OPCI), and by national funds, through FCT. The Coimbra Chemistry Center is supported by FCT, through Projects UIDB/00313/2020, and UIDP/ 00313/2020. FCT is also gratefully acknowledged for a Ph.D. grant to D.P. (ref SFRH/BD/ 74351/2010). D.P. also acknowledges project “SunStorage—Harvesting and storage of solar energy” for a research grantSpringer Nature2021-06-11info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/107458http://hdl.handle.net/10316/107458https://doi.org/10.1038/s42004-021-00523-0eng2399-3669Pinheiro, DanielaPineiro, MartaMelo, J. Sérgio Seixas deinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-17T14:56:40Zoai:estudogeral.uc.pt:10316/107458Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:23:48.659633Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Sulfonated tryptanthrin anolyte increases performance in pH neutral aqueous redox flow batteries
title Sulfonated tryptanthrin anolyte increases performance in pH neutral aqueous redox flow batteries
spellingShingle Sulfonated tryptanthrin anolyte increases performance in pH neutral aqueous redox flow batteries
Pinheiro, Daniela
title_short Sulfonated tryptanthrin anolyte increases performance in pH neutral aqueous redox flow batteries
title_full Sulfonated tryptanthrin anolyte increases performance in pH neutral aqueous redox flow batteries
title_fullStr Sulfonated tryptanthrin anolyte increases performance in pH neutral aqueous redox flow batteries
title_full_unstemmed Sulfonated tryptanthrin anolyte increases performance in pH neutral aqueous redox flow batteries
title_sort Sulfonated tryptanthrin anolyte increases performance in pH neutral aqueous redox flow batteries
author Pinheiro, Daniela
author_facet Pinheiro, Daniela
Pineiro, Marta
Melo, J. Sérgio Seixas de
author_role author
author2 Pineiro, Marta
Melo, J. Sérgio Seixas de
author2_role author
author
dc.contributor.author.fl_str_mv Pinheiro, Daniela
Pineiro, Marta
Melo, J. Sérgio Seixas de
description Aqueous organic redox flow batteries (AORFBs) hold great promise as low-cost, environmentally friendly and safe alternative energy storage media. Here we present aqueous organometallic and all-organic active materials for RFBs with a water-soluble active material, sulfonated tryptanthrin (TRYP-SO3H), working at a neutral pH and showing long-term stability. Electrochemical measurements show that TRYP-SO3H displays reversible peaks at neutral pH values, allowing its use as an anolyte combined with potassium ferrocyanide or 4,5-dihydroxy-1,3-benzenedisulfonic acid disodium salt monohydrate as catholytes. Single cell tests show reproducible charge-discharge cycles for both catholytes, with significantly improved results for the aqueous all-organic RFB reaching high cell voltage (0.94 V) and high energy efficiencies, stabilized during at least 50 working cycles.
publishDate 2021
dc.date.none.fl_str_mv 2021-06-11
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10316/107458
http://hdl.handle.net/10316/107458
https://doi.org/10.1038/s42004-021-00523-0
url http://hdl.handle.net/10316/107458
https://doi.org/10.1038/s42004-021-00523-0
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 2399-3669
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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dc.publisher.none.fl_str_mv Springer Nature
publisher.none.fl_str_mv Springer Nature
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