| 초록 |
In the electrodes for all vanadium redox flow batteries, it is needed to the lower electrodes resistance, the higher electrochemical activity and reaction area. a carbon base material and graphite is commonly used as electrode material for all vanadium redox flow battery. These carbon base material and graphite have a low electrochemical activity. So, in this paper, we conducted a acid treatment, as a wet process, and observed a performance and efficiency of batteries through charge-discharge test. Also, We confirmed that a oxygen functional group improving a electrochemical activity is generated through XPS(X-ray Photoelectron Spectroscopy) analysis. Furthermore, We confirmed a oxidation · reduction reaction and reversibility through a CV(Cyclic voltammetry) test and resistance of electrode through a impedance measurement. |
