All-vanadium redox flow battery and operation method thereof

An all-vanadium redox flow battery and an operation method thereof, which belong to the field of flow batteries. The all-vanadium redox flow battery comprises a positive electrode electrolyte and a negative electrode electrolyte. A total vanadium ratio of the positive electrode electrolyte and the n...

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Bibliographic Details
Main Authors Lin, Zeqing, Liu, Ruonan, Zhao, Yelong, Li, Ying, Wang, Xiaoli, Zhang, Huamin, Gao, Xinliang
Format Patent
LanguageEnglish
Published 22.12.2016
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Summary:An all-vanadium redox flow battery and an operation method thereof, which belong to the field of flow batteries. The all-vanadium redox flow battery comprises a positive electrode electrolyte and a negative electrode electrolyte. A total vanadium ratio of the positive electrode electrolyte and the negative electrode electrolyte is maintained at the following ratio: positive electrode: negative electrode = 1:1.5-1:1.2. Both the positive electrode electrolyte and negative electrode electrolyte comprise additives, the concentration of the additives being 0.01mol/L-0.5mol/L. The additive is at least one selected from sulfuric acid, sulfate, phosphoric acid, phosphate, pyrophosphate, and polyphosphate. The all-vanadium redox flow battery can maintain high-energy-density operation, and can also significantly reduce discharge energy irreversible attenuation caused by a hydrogen evolution side-reaction.
Bibliography:Application Number: AU20140292587