Nano zirconium oxide/carbon black as a new electrode material for electrochemical double layer capacitors

详细信息	查看全文 | 推荐本文 |

• 作者：Mahdi Nasibi^a ; ^{mahdi.nasibi@gmail.com} ; Mohammad Ali Golozar^b ; Gholamreza Rashed^a
• 关键词：Nano zirconium oxide ; Electrochemical capacitor ; Cyclic voltammetry ; Electrochemical impedance spectroscopy ; Scanning electron microscopy
• 刊名：Journal of Power Sources
• 出版年：2012
• 期刊代码：58_03787753
• 类别：ce
• 出版时间：15 May, 2012
• 卷：206
• 期：Complete
• 页码：108-110
• 文件大小：595 K

摘要

In this paper, nano ZrO₂/carbon black was evaluated as a possible electrode candidate material for electrochemical capacitors. Mechanical pressing as a fast and easy method was used for electrode fabrication. Regarding the utility in supercapacitors, the electrochemical properties of the produced nanocomposite was studied using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) tests in 2 M KCl, KOH and NaNO₃ electrolytes. Scanning electron microscopy (SEM) was used to characterize the microstructure and nature of the nanocomposite produced. The results obtained show that the 30:60:10 (carbon black:ZrO₂:polytetrafluoroethylene) type electrode has a specific capacitance as high as 43.20 F g^鈭?, in the potential range of 鈭?.15 to 0.55 V (vs. SCE) in 2 M KCl at scan rate of 10 mV s^鈭?. SEM images confirm the porous structure of ZrO₂/carbon black nanocomposite electrode. Also, charge/discharge cycling test shows a good reversibility and confirms that the electrical resistance would increase after 100 cycles.