NiO/ZnO Composite Derived Metal-Organic Framework as Advanced Electrode Materials for Zinc Hybrid Redox Flow Battery |
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Authors: | Priya Lakshmanan Premnahth Jeyaraj Janshirani Dr Subadevi Rengapillai Prof Marimuthu Sivakumar |
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Institution: | #120, Energy Materials Lab Department of Physics, Science Block, Alagappa University, Karaikudi, 630003, Tamil Nadu India |
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Abstract: | NiO/ZnO composite derived metal-organic framework (MOF) is used as to modify carbon felt (CF) via a conventional solid-state reaction followed by ultrasonication. The prepared electrode material is used in zinc-hybrid redox flow batteries (RFBs) due to their high redox activity of Zn2+/Zn. The electrochemical performance of composite modified CF and pre-treated CF was studied by cyclic voltammetry (CV) in 0.5 M aqueous zinc chloride with 5 M potassium hydroxide solutions showed clear confirmation for enhanced electrocatalytic activity. The unique porous structure of NiO/ZnO-derived MOF with increased surface area improves the battery behavior significantlyThe peak current ratio for the as-prepared material is about 3 times higher than that of the pre-treated CF due to more active sites. Zinc-based RFB with modified CF electrode exhibited better electrochemical performance with voltage efficiency (VE, 88 %), which is higher than true redox flow batteries. |
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Keywords: | NiO/MOF NiO/ZnO composite redox flow battery solid state method state of charge |
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