| Summary: | 碩士 === 國立聯合大學 === 化學工程學系碩士班 === 106 === In this study, the negative electrolyte (V3+/V2+) of all-vanadium redox flow battery (All-VRFB) was replaced by ammonium ferrous(II) sulfate to set up a vanadium/iron redox flow battery (Vanadium/Ferrum redox flow battery, V/Fe-RFB). And we improved the flow channel model and electrode to modify the performance of V/Fe-RFB . In the experimental design, the charge-discharge test was carried out on the V/Fe-RFB system using the serpentine flow path and the staggered flow path, respectively. The staggered flow model was found with the ability to evenly distribute the electrolyte and more reaction time. The V/Fe-RFB system achieves excellent battery efficiency. Finally, the C/TiO2/Co-P composite electrode was prepared by sol-gel method and electroless plating. The surface morphology and electrochemical activity of the composite electrode were analyzed. The results showed that the C/TiO2/Co-P composite electrode can effectively improve the diffusion coefficient D0 value, the electric double layer capacitance value Cd value and the electrochemical activity of the V/Fe-RFB system.
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