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DABCOnium: An Efficient and High‐Voltage Stable Singlet Oxygen Quencher for Metal–O(2) Cells

Singlet oxygen ((1)O(2)) causes a major fraction of the parasitic chemistry during the cycling of non‐aqueous alkali metal‐O(2) batteries and also contributes to interfacial reactivity of transition‐metal oxide intercalation compounds. We introduce DABCOnium, the mono alkylated form of 1,4‐diazabicy...

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Autores principales: Petit, Yann K., Leypold, Christian, Mahne, Nika, Mourad, Eléonore, Schafzahl, Lukas, Slugovc, Christian, Borisov, Sergey M., Freunberger, Stefan A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6563493/
https://www.ncbi.nlm.nih.gov/pubmed/30884063
http://dx.doi.org/10.1002/anie.201901869
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author Petit, Yann K.
Leypold, Christian
Mahne, Nika
Mourad, Eléonore
Schafzahl, Lukas
Slugovc, Christian
Borisov, Sergey M.
Freunberger, Stefan A.
author_facet Petit, Yann K.
Leypold, Christian
Mahne, Nika
Mourad, Eléonore
Schafzahl, Lukas
Slugovc, Christian
Borisov, Sergey M.
Freunberger, Stefan A.
author_sort Petit, Yann K.
collection PubMed
description Singlet oxygen ((1)O(2)) causes a major fraction of the parasitic chemistry during the cycling of non‐aqueous alkali metal‐O(2) batteries and also contributes to interfacial reactivity of transition‐metal oxide intercalation compounds. We introduce DABCOnium, the mono alkylated form of 1,4‐diazabicyclo[2.2.2]octane (DABCO), as an efficient (1)O(2) quencher with an unusually high oxidative stability of ca. 4.2 V vs. Li/Li(+). Previous quenchers are strongly Lewis basic amines with too low oxidative stability. DABCOnium is an ionic liquid, non‐volatile, highly soluble in the electrolyte, stable against superoxide and peroxide, and compatible with lithium metal. The electrochemical stability covers the required range for metal–O(2) batteries and greatly reduces (1)O(2) related parasitic chemistry as demonstrated for the Li–O(2) cell.
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spelling pubmed-65634932019-06-17 DABCOnium: An Efficient and High‐Voltage Stable Singlet Oxygen Quencher for Metal–O(2) Cells Petit, Yann K. Leypold, Christian Mahne, Nika Mourad, Eléonore Schafzahl, Lukas Slugovc, Christian Borisov, Sergey M. Freunberger, Stefan A. Angew Chem Int Ed Engl Communications Singlet oxygen ((1)O(2)) causes a major fraction of the parasitic chemistry during the cycling of non‐aqueous alkali metal‐O(2) batteries and also contributes to interfacial reactivity of transition‐metal oxide intercalation compounds. We introduce DABCOnium, the mono alkylated form of 1,4‐diazabicyclo[2.2.2]octane (DABCO), as an efficient (1)O(2) quencher with an unusually high oxidative stability of ca. 4.2 V vs. Li/Li(+). Previous quenchers are strongly Lewis basic amines with too low oxidative stability. DABCOnium is an ionic liquid, non‐volatile, highly soluble in the electrolyte, stable against superoxide and peroxide, and compatible with lithium metal. The electrochemical stability covers the required range for metal–O(2) batteries and greatly reduces (1)O(2) related parasitic chemistry as demonstrated for the Li–O(2) cell. John Wiley and Sons Inc. 2019-04-09 2019-05-13 /pmc/articles/PMC6563493/ /pubmed/30884063 http://dx.doi.org/10.1002/anie.201901869 Text en © 2019 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA. This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc-nd/4.0/ License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.
spellingShingle Communications
Petit, Yann K.
Leypold, Christian
Mahne, Nika
Mourad, Eléonore
Schafzahl, Lukas
Slugovc, Christian
Borisov, Sergey M.
Freunberger, Stefan A.
DABCOnium: An Efficient and High‐Voltage Stable Singlet Oxygen Quencher for Metal–O(2) Cells
title DABCOnium: An Efficient and High‐Voltage Stable Singlet Oxygen Quencher for Metal–O(2) Cells
title_full DABCOnium: An Efficient and High‐Voltage Stable Singlet Oxygen Quencher for Metal–O(2) Cells
title_fullStr DABCOnium: An Efficient and High‐Voltage Stable Singlet Oxygen Quencher for Metal–O(2) Cells
title_full_unstemmed DABCOnium: An Efficient and High‐Voltage Stable Singlet Oxygen Quencher for Metal–O(2) Cells
title_short DABCOnium: An Efficient and High‐Voltage Stable Singlet Oxygen Quencher for Metal–O(2) Cells
title_sort dabconium: an efficient and high‐voltage stable singlet oxygen quencher for metal–o(2) cells
topic Communications
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6563493/
https://www.ncbi.nlm.nih.gov/pubmed/30884063
http://dx.doi.org/10.1002/anie.201901869
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