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Communicationâ A new additive for increased stabilization of catholytes in vanadium flow batteries (VFBs)

Date
2019
Abstract
We report a newadditive,monobasic potassium arsenate (KH2AsO4), for improving the thermal stability of VFB catholytes.Using our standard accelerated testing methodology at 30â 70°C, we showed that the effect increases continuously with increasing concentration of arsenate over the range investigated (0 â 0.10 mol dmâ 3). In comparison to similar experiments with phosphate (H3PO4), the magnitude of the effect was greater for arsenate. A combination of arsenate and phosphate was also effective. Based on these results, we speculate that other Group-V elements in the +5 oxidation state may also stabilize VFB catholytes
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Description
peer-reviewed
Publisher
Electrochemical Society
Citation
Journal of The Electrochemical Society;166 (10)pp. A2270-A2272
Collections
Bernal Institute
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Oboroceanu_2019_communication.pdf
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Keywords
Catholytes, Flow Batteries
ULRR Identifiers
https://researchrepository.ul.ie/handle/10344/7919
 https://doi.org/10.34961/4835
Funding code
Funding Information
European Regional Development Fund, Enterprise Ireland (EI)
Sustainable Development Goals
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Type
Article
Rights
https://creativecommons.org/licenses/by-nc-sa/1.0/
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