Ultrastable superbase-derived protic ionic liquids

Huimin Luo; Gary A. Baker; Je Seung Lee; Richard M. Pagni; Sheng Dai

doi:10.1021/jp901312d

Ultrastable superbase-derived protic ionic liquids

Huimin Luo, Gary A. Baker, Je Seung Lee, Richard M. Pagni, Sheng Dai

Research output: Contribution to journal › Article › peer-review

98 Scopus citations

Abstract

Protic ionic liquids are synthesized via proton transfer from acids to organic bases. One of the key issues associated with conventional protic ionic liquids is the thermal instability resulting from temperature-induced decomposition via reverse proton transfer. This shortcoming significantly hampers the use of these protic ionic liquids in separations, electrochemical capacitors, fuel cells, and so forth. Herein we show that it is possible to prepare protic ionic liquids with thermal stabilities approaching those of common aprotic ionic liquids. Our new class of protic ionic liquids, derived via integrated neutralization and metathesis of superbasic phosphazenes or guanidines, exhibits exceptionally low vapor pressures at 150 °C while being stable to strong alkali agents such as aqueous KOH, suggesting potential in energy-related applications, including electrochemical capacitors and PEM-type fuel cells.

Original language	English
Pages (from-to)	4181-4183
Number of pages	3
Journal	Journal of Physical Chemistry B
Volume	113
Issue number	13
DOIs	https://doi.org/10.1021/jp901312d
State	Published - Apr 2 2009

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abstract = "Protic ionic liquids are synthesized via proton transfer from acids to organic bases. One of the key issues associated with conventional protic ionic liquids is the thermal instability resulting from temperature-induced decomposition via reverse proton transfer. This shortcoming significantly hampers the use of these protic ionic liquids in separations, electrochemical capacitors, fuel cells, and so forth. Herein we show that it is possible to prepare protic ionic liquids with thermal stabilities approaching those of common aprotic ionic liquids. Our new class of protic ionic liquids, derived via integrated neutralization and metathesis of superbasic phosphazenes or guanidines, exhibits exceptionally low vapor pressures at 150 °C while being stable to strong alkali agents such as aqueous KOH, suggesting potential in energy-related applications, including electrochemical capacitors and PEM-type fuel cells.",

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AU - Luo, Huimin

AU - Baker, Gary A.

AU - Lee, Je Seung

AU - Pagni, Richard M.

AU - Dai, Sheng

PY - 2009/4/2

Y1 - 2009/4/2

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AB - Protic ionic liquids are synthesized via proton transfer from acids to organic bases. One of the key issues associated with conventional protic ionic liquids is the thermal instability resulting from temperature-induced decomposition via reverse proton transfer. This shortcoming significantly hampers the use of these protic ionic liquids in separations, electrochemical capacitors, fuel cells, and so forth. Herein we show that it is possible to prepare protic ionic liquids with thermal stabilities approaching those of common aprotic ionic liquids. Our new class of protic ionic liquids, derived via integrated neutralization and metathesis of superbasic phosphazenes or guanidines, exhibits exceptionally low vapor pressures at 150 °C while being stable to strong alkali agents such as aqueous KOH, suggesting potential in energy-related applications, including electrochemical capacitors and PEM-type fuel cells.

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Ultrastable superbase-derived protic ionic liquids

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