SPECTRAL GRAPHITE AS ELECTRODE MATERIAL FOR THE ALL-VANADIUM REDOX FLOW BATERY

Authors

  • Dana-Maria SABOU Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University, Cluj-Napoca, Romania. Email: dsabou@chem.ubbcluj.ro. https://orcid.org/0000-0001-6199-6081
  • Sorin-Aurel DORNEANU Faculty of Chemistry and Chemical Engineering; Interdisciplinary Research Institute on Bio Nano Sciences; Research Center of Electrochemistry and Nonconventional Materials, Babes-Bolyai University, Cluj-Napoca, Romania. Email: dorneanu@chem.ubbcluj.ro. https://orcid.org/0000-0002-2690-6383
  • Petru ILEA Interdisciplinary Research Institute on Bio Nano Sciences, Babeş-Bolyai University, Cluj-Napoca, Romania. Email: pilea@chem.ubbcluj.ro. https://orcid.org/0000-0002-4334-2735

Keywords:

all vanadium battery, spectral graphite, cyclic voltammetry

Abstract

The ability of unmodified or PbO2 coated spectral graphite (SG), to act as positive electrode in an all-vanadium redox flow battery was tested. Our results showed that the unmodified SG requires simple pretreatment and is efficient in terms of current due to a large active area, 4 times greater than the geometrical one. The PbO2 deposits were grown on surfaces that previously received only basic treatment but present a poor stability. In all experiments, large separations of anodic and cathodic peak potentials (between 118 and 1015 mV) were observed, proving the irreversibility of the VV to VIV redox couple on all studied materials.

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STUDIA UBB CHEMIA, Volume 60 (LX), No. 3, September 2015

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Published

2015-09-30

How to Cite

SABOU, D.-M. ., DORNEANU, S.-A. ., & ILEA, P. . (2015). SPECTRAL GRAPHITE AS ELECTRODE MATERIAL FOR THE ALL-VANADIUM REDOX FLOW BATERY. Studia Universitatis Babeș-Bolyai Chemia, 60(3), 193–203. Retrieved from https://studia.reviste.ubbcluj.ro/index.php/chemia/article/view/8480

Issue

Volume 60, No. 3, 2015

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Articles

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