Communication-observation of Arrhenius behavior of catholyte stability in vanadium flow batteries

Daniela Oboroceanu; Nathan Quill; Catherine Lenihan; Deirdre Ní Eidhin; Sergiu P. Albu; Robert P. Lynch; D. Noel Buckley

doi:10.1149/2.0361614jes

Communication-observation of Arrhenius behavior of catholyte stability in vanadium flow batteries

Daniela Oboroceanu, Nathan Quill, Catherine Lenihan, Deirdre Ní Eidhin, Sergiu P. Albu, Robert P. Lynch, D. Noel Buckley

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

Abstract

The stability of typical vanadium flowbattery (VFB) catholytes with respect to precipitation of V₂O₅ was investigated at temperatures in the range 30-60°C. In all cases a precipitate formed after an induction time, which decreased with increasing temperature and concentration of V^V and increased with concentration of sulfate. Arrhenius-type plots are shown for two typical solutions. These have excellent linearity and have similar slopes which yield an apparent activation energy of 1.79 eV (172 kJ mol^-1). The variation of induction time with temperature for various concentrations of V^V was simulated, and stability diagrams for additive-free VFB catholytes were generated.

Original language	English
Pages (from-to)	A2919-A2921
Journal	Journal of the Electrochemical Society
Volume	163
Issue number	14
DOIs	https://doi.org/10.1149/2.0361614jes
Publication status	Published - 2016

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title = "Communication-observation of Arrhenius behavior of catholyte stability in vanadium flow batteries",

abstract = "The stability of typical vanadium flowbattery (VFB) catholytes with respect to precipitation of V2O5 was investigated at temperatures in the range 30-60°C. In all cases a precipitate formed after an induction time, which decreased with increasing temperature and concentration of VV and increased with concentration of sulfate. Arrhenius-type plots are shown for two typical solutions. These have excellent linearity and have similar slopes which yield an apparent activation energy of 1.79 eV (172 kJ mol-1). The variation of induction time with temperature for various concentrations of VV was simulated, and stability diagrams for additive-free VFB catholytes were generated.",

author = "Daniela Oboroceanu and Nathan Quill and Catherine Lenihan and Eidhin, {Deirdre N{\'i}} and Albu, {Sergiu P.} and Lynch, {Robert P.} and Buckley, {D. Noel}",

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doi = "10.1149/2.0361614jes",

language = "English",

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T1 - Communication-observation of Arrhenius behavior of catholyte stability in vanadium flow batteries

AU - Oboroceanu, Daniela

AU - Quill, Nathan

AU - Lenihan, Catherine

AU - Eidhin, Deirdre Ní

AU - Albu, Sergiu P.

AU - Lynch, Robert P.

AU - Buckley, D. Noel

PY - 2016

Y1 - 2016

N2 - The stability of typical vanadium flowbattery (VFB) catholytes with respect to precipitation of V2O5 was investigated at temperatures in the range 30-60°C. In all cases a precipitate formed after an induction time, which decreased with increasing temperature and concentration of VV and increased with concentration of sulfate. Arrhenius-type plots are shown for two typical solutions. These have excellent linearity and have similar slopes which yield an apparent activation energy of 1.79 eV (172 kJ mol-1). The variation of induction time with temperature for various concentrations of VV was simulated, and stability diagrams for additive-free VFB catholytes were generated.

AB - The stability of typical vanadium flowbattery (VFB) catholytes with respect to precipitation of V2O5 was investigated at temperatures in the range 30-60°C. In all cases a precipitate formed after an induction time, which decreased with increasing temperature and concentration of VV and increased with concentration of sulfate. Arrhenius-type plots are shown for two typical solutions. These have excellent linearity and have similar slopes which yield an apparent activation energy of 1.79 eV (172 kJ mol-1). The variation of induction time with temperature for various concentrations of VV was simulated, and stability diagrams for additive-free VFB catholytes were generated.

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M3 - Article

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SN - 0013-4651

VL - 163

SP - A2919-A2921

JO - Journal of the Electrochemical Society

JF - Journal of the Electrochemical Society

IS - 14

ER -

Communication-observation of Arrhenius behavior of catholyte stability in vanadium flow batteries

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