四氧化三鐵在亞硫酸溶液中表面電化學性質之探討
Other Title
Study on Surface Electrochemical Properties of Magnetite in Aqueous Sulfite Solution
Journal
界面科學會誌
Journal Volume
27
Journal Issue
3&4
Start Page
173
End Page
180
Date Issued
2005-09
Author(s)
王世育
Abstract
經由電鍍的方法所製得的薄膜Fe3O4電極，在1 M Na2SO3(aq)下的電容值為130 F/g，為了探討Fe3O4在Na2SO3(aq)中的偽電容機制，我們結合CV和EQCM的測試，此方法提供我們瞭解可逆的氧化和還原反應的路徑，在此發現SO3^2-離子會吸附在Fe3O4表面結構的Fe原子上，而且在還原的過程中會脫氧轉變成S^2-離子，這結果將使得此偽電容電容器為一可逆的反應。
Magnetite thin film exhibits a specific capacitance of ~130 F/g in 1 M Na2SO3(aq). Cyclic voltammetry was combined with Electrochemical Quartz Crystal Microbalance analysis to investigate the pseudocapacitive mechanism involved in this system. The results indicate that the pseudocapacitance originates from the specific adsorption of SO3^2- ions on Fe3O4 surface structure, followed by reversible redox transformation between -SO3 and -S surface species.
Subjects
超高電容器
氧化鐵
電化學石英晶體微量天平
偽電容機制
Supercapacitor
Fe3O4
electrochemical quartz crystal microbalance
pseudocapacitance mechanism
Type
journal article