Organophosphates as solvents for electrolytes in electrochemical devices

Andrew Hess; Greg Barber; Chen Chen; Thomas E. Mallouk; Harry R. Allcock

doi:10.1021/am403924t

Organophosphates as solvents for electrolytes in electrochemical devices

Andrew Hess, Greg Barber, Chen Chen, Thomas E. Mallouk, Harry R. Allcock

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

15 Scopus citations

Abstract

A homologous series of fire-retardant oligoalkyleneoxy-phosphates was synthesized for evaluation as liquid or gel-type electrolyte media for dye-sensitized solar cells (DSSCs) and secondary lithium batteries. Unoptimized DSSC electrolyte formulations for DSSCs achieved ionic conductivities as high as 5.71 × 10^-3 S·cm^-1 and DSSC test-cell efficiencies up to 3.6% as well as V_oc, J_sc, and ff up to 0.81 V, 8.03 mA·cm^-2, and 0.69, respectively. Poly(bis-(2-(2-methoxyethoxy)ethoxy)phosphazene)-based Li⁺-conducting gel electrolytes plasticized with the best performing phosphate had conductivities as high as 9.9 × 10^-4 S·cm^-1 at 30 C. All the liquids have boiling points higher than 197 C. The results show that the viscosity, glass transition temperatures, and conductivity of the phosphates are dependent mainly on the length of the longest alkyleneoxy chain.

Original language	English (US)
Pages (from-to)	13029-13034
Number of pages	6
Journal	ACS Applied Materials and Interfaces
Volume	5
Issue number	24
DOIs	https://doi.org/10.1021/am403924t
State	Published - Dec 26 2013

All Science Journal Classification (ASJC) codes

General Materials Science

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10.1021/am403924t

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title = "Organophosphates as solvents for electrolytes in electrochemical devices",

abstract = "A homologous series of fire-retardant oligoalkyleneoxy-phosphates was synthesized for evaluation as liquid or gel-type electrolyte media for dye-sensitized solar cells (DSSCs) and secondary lithium batteries. Unoptimized DSSC electrolyte formulations for DSSCs achieved ionic conductivities as high as 5.71 × 10-3 S·cm-1 and DSSC test-cell efficiencies up to 3.6% as well as Voc, Jsc, and ff up to 0.81 V, 8.03 mA·cm-2, and 0.69, respectively. Poly(bis-(2-(2-methoxyethoxy)ethoxy)phosphazene)-based Li+-conducting gel electrolytes plasticized with the best performing phosphate had conductivities as high as 9.9 × 10-4 S·cm-1 at 30 C. All the liquids have boiling points higher than 197 C. The results show that the viscosity, glass transition temperatures, and conductivity of the phosphates are dependent mainly on the length of the longest alkyleneoxy chain.",

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AU - Hess, Andrew

AU - Barber, Greg

AU - Chen, Chen

AU - Mallouk, Thomas E.

AU - Allcock, Harry R.

PY - 2013/12/26

Y1 - 2013/12/26

N2 - A homologous series of fire-retardant oligoalkyleneoxy-phosphates was synthesized for evaluation as liquid or gel-type electrolyte media for dye-sensitized solar cells (DSSCs) and secondary lithium batteries. Unoptimized DSSC electrolyte formulations for DSSCs achieved ionic conductivities as high as 5.71 × 10-3 S·cm-1 and DSSC test-cell efficiencies up to 3.6% as well as Voc, Jsc, and ff up to 0.81 V, 8.03 mA·cm-2, and 0.69, respectively. Poly(bis-(2-(2-methoxyethoxy)ethoxy)phosphazene)-based Li+-conducting gel electrolytes plasticized with the best performing phosphate had conductivities as high as 9.9 × 10-4 S·cm-1 at 30 C. All the liquids have boiling points higher than 197 C. The results show that the viscosity, glass transition temperatures, and conductivity of the phosphates are dependent mainly on the length of the longest alkyleneoxy chain.

AB - A homologous series of fire-retardant oligoalkyleneoxy-phosphates was synthesized for evaluation as liquid or gel-type electrolyte media for dye-sensitized solar cells (DSSCs) and secondary lithium batteries. Unoptimized DSSC electrolyte formulations for DSSCs achieved ionic conductivities as high as 5.71 × 10-3 S·cm-1 and DSSC test-cell efficiencies up to 3.6% as well as Voc, Jsc, and ff up to 0.81 V, 8.03 mA·cm-2, and 0.69, respectively. Poly(bis-(2-(2-methoxyethoxy)ethoxy)phosphazene)-based Li+-conducting gel electrolytes plasticized with the best performing phosphate had conductivities as high as 9.9 × 10-4 S·cm-1 at 30 C. All the liquids have boiling points higher than 197 C. The results show that the viscosity, glass transition temperatures, and conductivity of the phosphates are dependent mainly on the length of the longest alkyleneoxy chain.

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ER -

Organophosphates as solvents for electrolytes in electrochemical devices

Abstract

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