Ionic conductivity and glass transition of phosphoric acids

Yangyang Wang; Nathan A. Lane; Che Nan Sun; Fei Fan; Thomas A. Zawodzinski; Alexei P. Sokolov

doi:10.1021/jp403867a

Ionic conductivity and glass transition of phosphoric acids

Yangyang Wang, Nathan A. Lane, Che Nan Sun, Fei Fan, Thomas A. Zawodzinski, Alexei P. Sokolov

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Abstract

Here we report the low-temperature dielectric and viscoelastic properties of phosphoric acids in the range of H₂O:P₂O₅ 1.5-5. Both dielectric and viscosity measurements allow us to determine the glass-transition temperatures of phosphoric acids. The obtained glass-transition temperatures are in good agreement with previous differential scanning calorimetric measurements. Moreover, our analysis reveals moderate decoupling of ionic conductivity from structural relaxation in the vicinity of the glass transition.

Original language	English
Pages (from-to)	8003-8009
Number of pages	7
Journal	Journal of Physical Chemistry B
Volume	117
Issue number	26
DOIs	https://doi.org/10.1021/jp403867a
State	Published - Jul 3 2013

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abstract = "Here we report the low-temperature dielectric and viscoelastic properties of phosphoric acids in the range of H2O:P2O5 1.5-5. Both dielectric and viscosity measurements allow us to determine the glass-transition temperatures of phosphoric acids. The obtained glass-transition temperatures are in good agreement with previous differential scanning calorimetric measurements. Moreover, our analysis reveals moderate decoupling of ionic conductivity from structural relaxation in the vicinity of the glass transition.",

author = "Yangyang Wang and Lane, {Nathan A.} and Sun, {Che Nan} and Fei Fan and Zawodzinski, {Thomas A.} and Sokolov, {Alexei P.}",

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AU - Wang, Yangyang

AU - Lane, Nathan A.

AU - Sun, Che Nan

AU - Fan, Fei

AU - Zawodzinski, Thomas A.

AU - Sokolov, Alexei P.

PY - 2013/7/3

Y1 - 2013/7/3

N2 - Here we report the low-temperature dielectric and viscoelastic properties of phosphoric acids in the range of H2O:P2O5 1.5-5. Both dielectric and viscosity measurements allow us to determine the glass-transition temperatures of phosphoric acids. The obtained glass-transition temperatures are in good agreement with previous differential scanning calorimetric measurements. Moreover, our analysis reveals moderate decoupling of ionic conductivity from structural relaxation in the vicinity of the glass transition.

AB - Here we report the low-temperature dielectric and viscoelastic properties of phosphoric acids in the range of H2O:P2O5 1.5-5. Both dielectric and viscosity measurements allow us to determine the glass-transition temperatures of phosphoric acids. The obtained glass-transition temperatures are in good agreement with previous differential scanning calorimetric measurements. Moreover, our analysis reveals moderate decoupling of ionic conductivity from structural relaxation in the vicinity of the glass transition.

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Ionic conductivity and glass transition of phosphoric acids

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