| 초록 |
Traditional inorganic redox species such as vanadium, zinc and iron for redox flow battery have suffered low solubility in aqueous solution, low electrochemical reactivity and high cost. Conversely, organic redox compounds are taken notice as new electrolyte material due to its molecular diversity, environmental benignity and potential low cost. Therefore, we demonstrate that a 4-hydroxy-2,2,6,6-tetramethyl-1-piperidinyloxyl (TEMPOL) electrolyte is significantly stable on its redox reversibility compared to a vanadium sulfate. Electrochemical measurements were employed with cyclic voltammetry, electrochemical impedance spectroscopy and Tafel plot. Research on these properties will be the key to enable the successful implementation of this inexpensive and eco-friendly battery. |
