Electrochemical behavior of nanostructured manganese oxide electrodes prepared by surfactant-assisted anodic electrodeposition

• Main Authors: Thanh-Phu Tran, 陳清富
• Other Authors: Mao-Sung Wu
• Format: Others
• Language: en_US
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/24398136546188424021

碩士 === 國立高雄應用科技大學 === 精密模具與機械產研碩士外國專班 === 99 === In this study, sodium dodecyl sulfate (SDS) and cetyltrimethylammonium bromide (CTAB) were utilized to prepare the nanostructured manganese oxide electrodes by surfactant-assisted anodic electrodeposition. The effects of the surfactant concentration on the electrochemical behavior were investigated. Field-emission scanning electron microscope (FE-SEM) was used to identify the film surface morphology. The electrochemical performances of the films were characterized via cyclic voltammetry, galvanostatic charge/discharge and cycle-life test in 1 M Na2SO4 electrolyte. The SEM image showed that the morphology of surfactant-assisted manganese oxide film was composed of nanowires. The electrochemical results showed that the specific capacitance values of 10 mM SDS-assisted and 1 mM CTAB-assisted MnO2 electrodes were approximately 254.4 Fg-1 and 253.2 Fg-1, respectively, which are higher than that of a bare MnO2 film deposited by anodic deposition (234.6 Fg-1).