摘要
采用恒电流法在不同浓度的苯胺与1mol·L-1高氯酸的混合溶液中,在氧化铟锡(ITO)导电玻璃基底上制备了聚苯胺纳米线.系统研究了苯胺浓度、合成时间对其形貌及电化学性能的影响.SEM结果显示,在不同条件下制得的聚苯胺为线状,直径大约在100～500nm.采用恒电流充放电、循环伏安和交流阻抗谱对聚苯胺纳米线电极的电化学性能进行了表征.结果表明,其在3mol·L-1NH4Cl和2mol·L-1ZnCl2的混合溶液中恒电流充放电(电压范围-0.2～0.5V)的比容量最高可达746.7F.g-1.
Polyaniline（PANI）nanowires on indium tin oxides（ITO）conducting glass substrates were synthesized by means of a galvanostatic method from an aqueous solution of 1.0 mol·L^-1 HClO4 and different concentrations of aniline monomer.The effects of aniline concentration and synthesis time on their morphology and electrochemical performance were systematically investigated.Scanning electron microscopy（SEM）revealed that PANI synthesized in different conditions was a wire in shape with different diameters of 100 to 500 nm.Electrochemical characterization of the PANI electrode was performed in an aqueous solution of 3 mol·L^-1 NH4Cl and 2 mol·L^-1 ZnCl2 by galvanostatic charge-discharge,cyclic voltammetry（CV）and electrochemical impedance spectroscopy（EIS）.A high specific capacitance of 746.7 F·g^-1 was obtained within the potential range of-0.2 to 0.5 V.
出处
《北京科技大学学报》
EI
CAS
CSCD
北大核心
2010年第4期494-498,共5页
Journal of University of Science and Technology Beijing
基金
国家自然科学基金资助项目(No.50872011
No.50672006)
新世纪优秀人才支持计划资助项目(No.NCET-08-0723)
关键词
聚苯胺
纳米线
电沉积
比容量
超级电容器
polyaniline
nanowire
electrodeposition
specific capacitance
supercapacitor
