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\}",

note = "Publisher Copyright: {\textcopyright} The Author(s) 2016.",

year = "2016",

doi = "10.1149/2.0361614jes",

language = "English",

volume = "163",

pages = "A2919--A2921",

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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.

UR - https://www.scopus.com/pages/publications/85006489317

U2 - 10.1149/2.0361614jes

DO - 10.1149/2.0361614jes

M3 - Article

AN - SCOPUS:85006489317

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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