電化學沉積聚苯胺薄膜電極應用於電化學超級電容器之研究

The study of polyaniline film by electrochemical deposition as the electrode material for electrochemical supercapacitor application

林經博(Jing-Bo Lin)

指導教授 ： 黃英邦

共同指導教授 ： 蔡木村(Mu-Tsun Tsai)

國立虎尾科技大學/工程學院/材料科學與工程系材料科學與綠色能源工程碩士班/碩士(2016年)

摘要

本研究是於0.5M苯胺及1.5M硫酸添加各種濃度硫酸鎳之混合水溶液中，利用電化學沉積法將聚苯胺摻雜鎳離子與未摻雜鎳離子沉積於鈦基材上作為電極材料，並藉由X光繞射分析儀(XRD)、掃描式電子顯微鏡(SEM)和傅立葉轉換紅外光譜(FT-IR)進行結構及表面形貌分析。本研究並將製備好的電極利用循環伏安法(Cyclic voltammetry；CV)及電化學交流阻抗法(EIS)於0.5M硫酸水溶液環境中，以三電極系統進行電化學性質測試，由實驗結果發現，在電化學測定中添加鎳離子的PAN薄膜比未添加鎳離子的薄膜具有較大的比電容量和較佳的循環穩定性。因此，添加鎳離子(Ni2+/PAN/Ti)的薄膜電極適合作為電化學超級電容器之應用。

關鍵字

循環伏安法 ； 聚苯胺 ； 電化學交流阻抗 ； 超級電容器

並列摘要

Polyaniline (PAN) films doped with Ni2+ and undoped films were synthesized by cyclic voltammetry (CV) on titanium substrates in 0.5 M aniline (An) and 1.5 M sulfuric acid (H2SO4) electrolyte with different concentration of nickel sulfate (NiSO4). The structure and morphology of polyaniline films doped with Ni2+ and undoped films were characterized by Fourier transform infrared (FTIR), X-ray diffraction (XRD) and Scanning electron microscopy (SEM) techniques.
The electrochemical properties of polyaniline (PAN) films doped with Ni2+ and undoped films were investigated by cyclic voltammetry and electrochemical impedance spectroscopy (EIS) in 0.5 M H2SO4 electrolyte in three-electrode system. The results indicate that the PAN/Ni2+ films show a larger specific capacitance and better cyclic stability compared with the pure PAN film. Therefore, the PAN/Ni2+ films are promising material for electrochemical supercapacitors applications.

並列關鍵字

Cyclic voltammetry ； Polyaniline ； Electrochemical impedance spectroscopy ； Electrochemical supercapacitor

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