MAS-NMR of [Pyr13][Tf2N] and [Pyr16][Tf2N] Ionic Liquids Confined to Carbon Black: Insights and Pitfalls

Electrolytes based on ionic liquids (IL) are promising candidates to replace traditional liquid electrolytes in electrochemical systems, particularly in combination with carbon-based porous electrodes. Insight into the dynamics of such systems is imperative for tailoring electrochemical performance....

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Autores principales:	Steffen Merz, Jie Wang, Petrik Galvosas, Josef Granwehr
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	[Pyr<sub>13</sub>][Tf<sub>2</sub>N] [Pyr<sub>16</sub>][Tf<sub>2</sub>N] MAS CPMG 13-interval PGSTE VXC72 carbon black Organic chemistry QD241-441
Acceso en línea:	https://doaj.org/article/da5560cffedb4870892f6e4237f52f02
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spelling	oai:doaj.org-article:da5560cffedb4870892f6e4237f52f022021-11-11T18:38:40ZMAS-NMR of [Pyr<sub>13</sub>][Tf<sub>2</sub>N] and [Pyr<sub>16</sub>][Tf<sub>2</sub>N] Ionic Liquids Confined to Carbon Black: Insights and Pitfalls10.3390/molecules262166901420-3049https://doaj.org/article/da5560cffedb4870892f6e4237f52f022021-11-01T00:00:00Zhttps://www.mdpi.com/1420-3049/26/21/6690https://doaj.org/toc/1420-3049Electrolytes based on ionic liquids (IL) are promising candidates to replace traditional liquid electrolytes in electrochemical systems, particularly in combination with carbon-based porous electrodes. Insight into the dynamics of such systems is imperative for tailoring electrochemical performance. In this work, 1-Methyl-1-propylpyrrolidinium bis(trifluoromethylsulfonyl)imide and 1-Hexyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide were studied in a carbon black (CB) host using spectrally resolved Carr-Purcell-Meiboom-Gill (CPMG) and 13-interval Pulsed Field Gradient Stimulated Echo (PFGSTE) Magic Angle Spinning Nuclear Magnetic Resonance (MAS-NMR). Data were processed using a sensitivity weighted Laplace inversion algorithm without non-negativity constraint. Previously found relations between the alkyl length and the aggregation behavior of pyrrolidinium-based cations were confirmed and characterized in more detail. For the IL in CB, a different aggregation behavior was found compared to the neat IL, adding the surface of a porous electrode as an additional parameter for the optimization of IL-based electrolytes. Finally, the suitability of MAS was assessed and critically discussed for investigations of this class of samples.Steffen MerzJie WangPetrik GalvosasJosef GranwehrMDPI AGarticle[Pyr<sub>13</sub>][Tf<sub>2</sub>N][Pyr<sub>16</sub>][Tf<sub>2</sub>N]MASCPMG13-interval PGSTEVXC72 carbon blackOrganic chemistryQD241-441ENMolecules, Vol 26, Iss 6690, p 6690 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	[Pyr<sub>13</sub>][Tf<sub>2</sub>N] [Pyr<sub>16</sub>][Tf<sub>2</sub>N] MAS CPMG 13-interval PGSTE VXC72 carbon black Organic chemistry QD241-441
spellingShingle	[Pyr<sub>13</sub>][Tf<sub>2</sub>N] [Pyr<sub>16</sub>][Tf<sub>2</sub>N] MAS CPMG 13-interval PGSTE VXC72 carbon black Organic chemistry QD241-441 Steffen Merz Jie Wang Petrik Galvosas Josef Granwehr MAS-NMR of [Pyr<sub>13</sub>][Tf<sub>2</sub>N] and [Pyr<sub>16</sub>][Tf<sub>2</sub>N] Ionic Liquids Confined to Carbon Black: Insights and Pitfalls
description	Electrolytes based on ionic liquids (IL) are promising candidates to replace traditional liquid electrolytes in electrochemical systems, particularly in combination with carbon-based porous electrodes. Insight into the dynamics of such systems is imperative for tailoring electrochemical performance. In this work, 1-Methyl-1-propylpyrrolidinium bis(trifluoromethylsulfonyl)imide and 1-Hexyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide were studied in a carbon black (CB) host using spectrally resolved Carr-Purcell-Meiboom-Gill (CPMG) and 13-interval Pulsed Field Gradient Stimulated Echo (PFGSTE) Magic Angle Spinning Nuclear Magnetic Resonance (MAS-NMR). Data were processed using a sensitivity weighted Laplace inversion algorithm without non-negativity constraint. Previously found relations between the alkyl length and the aggregation behavior of pyrrolidinium-based cations were confirmed and characterized in more detail. For the IL in CB, a different aggregation behavior was found compared to the neat IL, adding the surface of a porous electrode as an additional parameter for the optimization of IL-based electrolytes. Finally, the suitability of MAS was assessed and critically discussed for investigations of this class of samples.
format	article
author	Steffen Merz Jie Wang Petrik Galvosas Josef Granwehr
author_facet	Steffen Merz Jie Wang Petrik Galvosas Josef Granwehr
author_sort	Steffen Merz
title	MAS-NMR of [Pyr<sub>13</sub>][Tf<sub>2</sub>N] and [Pyr<sub>16</sub>][Tf<sub>2</sub>N] Ionic Liquids Confined to Carbon Black: Insights and Pitfalls
title_short	MAS-NMR of [Pyr<sub>13</sub>][Tf<sub>2</sub>N] and [Pyr<sub>16</sub>][Tf<sub>2</sub>N] Ionic Liquids Confined to Carbon Black: Insights and Pitfalls
title_full	MAS-NMR of [Pyr<sub>13</sub>][Tf<sub>2</sub>N] and [Pyr<sub>16</sub>][Tf<sub>2</sub>N] Ionic Liquids Confined to Carbon Black: Insights and Pitfalls
title_fullStr	MAS-NMR of [Pyr<sub>13</sub>][Tf<sub>2</sub>N] and [Pyr<sub>16</sub>][Tf<sub>2</sub>N] Ionic Liquids Confined to Carbon Black: Insights and Pitfalls
title_full_unstemmed	MAS-NMR of [Pyr<sub>13</sub>][Tf<sub>2</sub>N] and [Pyr<sub>16</sub>][Tf<sub>2</sub>N] Ionic Liquids Confined to Carbon Black: Insights and Pitfalls
title_sort	mas-nmr of [pyr<sub>13</sub>][tf<sub>2</sub>n] and [pyr<sub>16</sub>][tf<sub>2</sub>n] ionic liquids confined to carbon black: insights and pitfalls
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/da5560cffedb4870892f6e4237f52f02
work_keys_str_mv	AT steffenmerz masnmrofpyrsub13subtfsub2subnandpyrsub16subtfsub2subnionicliquidsconfinedtocarbonblackinsightsandpitfalls AT jiewang masnmrofpyrsub13subtfsub2subnandpyrsub16subtfsub2subnionicliquidsconfinedtocarbonblackinsightsandpitfalls AT petrikgalvosas masnmrofpyrsub13subtfsub2subnandpyrsub16subtfsub2subnionicliquidsconfinedtocarbonblackinsightsandpitfalls AT josefgranwehr masnmrofpyrsub13subtfsub2subnandpyrsub16subtfsub2subnionicliquidsconfinedtocarbonblackinsightsandpitfalls
_version_	1718431791571795968

MAS-NMR of [Pyr<sub>13</sub>][Tf<sub>2</sub>N] and [Pyr<sub>16</sub>][Tf<sub>2</sub>N] Ionic Liquids Confined to Carbon Black: Insights and Pitfalls

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