Improved synthesis of: N -ethyl-3,7-bis(trifluoromethyl)phenothiazine

Selin Ergun; Matthew D. Casselman; Aman Preet Kaur; N. Harsha Attanayake; Sean R. Parkin; Susan A. Odom

doi:10.1039/d0nj00184h

Improved synthesis of: N -ethyl-3,7-bis(trifluoromethyl)phenothiazine

Selin Ergun
, Matthew D. Casselman
, Aman Preet Kaur
, N. Harsha Attanayake
, Sean R. Parkin
, Susan A. Odom

Producción científica: Article › revisión exhaustiva

7 Citas (Scopus)

Resumen

N-Ethyl-3,7-bis(trifluoromethyl)phenothiazine is a highly soluble redox shuttle for overcharge protection in lithium-ion batteries with an oxidation potential of ca. 3.8 V vs. Li+/0 in carbonate solvents. This compound has enabled extensive overcharge protection of LiFePO4/graphite cells and does so at high charging rates at high concentrations. Our initial synthesis of this compound suffered from low yields and difficult purifications. Here we report a cleaner, higher-yielding synthesis and additional characterization of the product and its stable radical cation salt.

Idioma original	English
Páginas (desde-hasta)	11349-11355
Número de páginas	7
Publicación	New Journal of Chemistry
Volumen	44
N.º	26
DOI	https://doi.org/10.1039/d0nj00184h
Estado	Published - jul 14 2020

Nota bibliográfica

Publisher Copyright:
© The Royal Society of Chemistry and the Centre National de la Recherche Scientifique.

Financiación

We thank the National Science Foundation, Division of Chemistry for Award Numbers CHE-1300653 and CHE-1800482, and from support through an NSF EPSCoR grant, Award Number 1355438. Further, we the NSF for support through a Major Research Instrumentation grant through Award Number CHE-1626732.

Financiadores	Número del financiador
U.S. Department of Energy Chinese Academy of Sciences Guangzhou Municipal Science and Technology Project Oak Ridge National Laboratory Extreme Science and Engineering Discovery Environment National Science Foundation National Energy Research Scientific Computing Center National Natural Science Foundation of China	1300653, CHE-1300653, CHE-1626732, 1355438, 1800482, CHE-1800482
U.S. Department of Energy Chinese Academy of Sciences Guangzhou Municipal Science and Technology Project Oak Ridge National Laboratory Extreme Science and Engineering Discovery Environment National Science Foundation National Energy Research Scientific Computing Center National Natural Science Foundation of China
Kansas NSF EPSCoR

ODS de las Naciones Unidas

Este resultado contribuye a los siguientes Objetivos de Desarrollo Sostenible

Affordable and clean energy

ASJC Scopus subject areas

Catalysis
General Chemistry
Materials Chemistry

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abstract = "N-Ethyl-3,7-bis(trifluoromethyl)phenothiazine is a highly soluble redox shuttle for overcharge protection in lithium-ion batteries with an oxidation potential of ca. 3.8 V vs. Li+/0 in carbonate solvents. This compound has enabled extensive overcharge protection of LiFePO4/graphite cells and does so at high charging rates at high concentrations. Our initial synthesis of this compound suffered from low yields and difficult purifications. Here we report a cleaner, higher-yielding synthesis and additional characterization of the product and its stable radical cation salt.",

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AU - Kaur, Aman Preet

AU - Attanayake, N. Harsha

AU - Parkin, Sean R.

AU - Odom, Susan A.

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AB - N-Ethyl-3,7-bis(trifluoromethyl)phenothiazine is a highly soluble redox shuttle for overcharge protection in lithium-ion batteries with an oxidation potential of ca. 3.8 V vs. Li+/0 in carbonate solvents. This compound has enabled extensive overcharge protection of LiFePO4/graphite cells and does so at high charging rates at high concentrations. Our initial synthesis of this compound suffered from low yields and difficult purifications. Here we report a cleaner, higher-yielding synthesis and additional characterization of the product and its stable radical cation salt.

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Improved synthesis of: N -ethyl-3,7-bis(trifluoromethyl)phenothiazine

Resumen

Nota bibliográfica

Financiación

ODS de las Naciones Unidas

ASJC Scopus subject areas

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