RuO2/MWCNT/ stainless steel mesh as a novel positive electrode in vanadium redox flow batteries

The present work describes the preparation and electrochemical characterization of RuO 2 /MWCNT/Stainless Steel Mesh (SSM) electrode as compared with a MWCNT/SSM electrode in the positive half-cell of a Vanadium Redox Flow Battery (VRFB). The electrochemical characterization of prepared electrode wa...

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Bibliographic Details
Main Authors: Gobal, Fereydoon, Faraji, Masoud
Format: Article
Language:English
Online Access:Get full text
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Summary:The present work describes the preparation and electrochemical characterization of RuO 2 /MWCNT/Stainless Steel Mesh (SSM) electrode as compared with a MWCNT/SSM electrode in the positive half-cell of a Vanadium Redox Flow Battery (VRFB). The electrochemical characterization of prepared electrode was carried out using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and galvanostatic charge/discharge procedures. The electrochemical activity of MWCNT/SSM modified with RuO 2 as positive electrode in a VRFB was notably improved. The RuO 2 -included electrodes demonstrated high peak current ratio, small peak potential difference and high electron transfer rate constant, confirming excellent electro-catalytic activity and reversibility. These good electrochemical results, together with the long term stability of the prepared electrode, represent a significant step forward in the development of highly effective positive electrode materials for VRFBs. The present work describes the preparation and electrochemical characterization of RuO 2 /MWCNT/Stainless Steel Mesh (SSM) electrode as compared with a MWCNT/SSM electrode in the positive half-cell of a Vanadium Redox Flow Battery (VRFB).
ISSN:2046-2069
DOI:10.1039/c5ra12342a