Facile synthesis of polyaniline/TiO₂/graphene oxide composite for high performance supercapacitors

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• 作者：Haifang Su ; Teng Wang ; Shengyi Zhang ; ^{syzhangi@126.com} ; Jiming Song ; Changjie Mao ; Helin Niu ; Baokang Jin ; Jieying Wu ; Yupeng Tian
• 关键词：Polyaniline ; Graphene oxide ; Titanium dioxide ; Composite ; Supercapacitor
• 刊名：Solid State Sciences
• 出版年：2012
• 期刊代码：98_12932558
• 类别：ch
• 出版时间：June, 2012
• 卷：14
• 期：6
• 页码：677-681
• 文件大小：806 K

摘要

The polyaniline/TiO₂/graphene oxide (PANI/TiO₂/GO) composite, as a novel supercapacitor material, is synthesized by in situ hydrolyzation of tetrabutyl titanate and polymerization of aniline monomer in the presence of graphene oxide. The morphology, composition and structure of the composites as-obtained are characterized by SEM, TEM, XRD and TGA. The electrochemical property and impedance of the composites are studied by cyclic voltammetry and Nyquist plot, respectively. The results show that the聽introduction of the GO and TiO₂ enhanced the electrode conductivity and stability, and then improved the supercapacitive behavior of PANI/TiO₂/GO composite. Significantly, the electrochemical measurement results show that the PANI/TiO₂/GO composite has a high specific capacitance (1020聽F聽g^鈭? at 2聽mV聽s^鈭?, 430聽F聽g^鈭? at 1聽A聽g^鈭?) and long cycle life (over 1000 times).