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- Title
Postcomposition Preparation and Supercapacitive Properties of Polyaniline Nanotube/Graphene Oxide Composites with Interfacial Electrostatic Interaction.
- Authors
Zhang, Yong; Xiong, Shanxin; Wang, Yuyun; Wu, Bohua; Chu, Jia; Wang, Xiaoqin; Zhang, Runlan; Gong, Ming; Li, Zhen; Qu, Mengnan; Chen, Zhenming
- Abstract
Polyaniline nanotubes (PANI-T) and graphene oxide (GO) have been compounded by a postcomposition method with the assistance of electrostatic adsorption. Using this so-called postcomposition method, both the electric double-layer capacitance of the GO and the pseudocapacitance of the conducting polymer can be utilized. PANI-T prepared by a rapid mixing method was positively charged by pretreatment with (3-aminopropyl)triethoxysilane (APTES). PANI/GO composites were obtained by mixing the positively charged PANI-T and negatively charge GO with the assistance of electrostatic attraction. Charge–discharge measurements in 1 mol L−1 H2SO4 aqueous electrolyte revealed that the specific capacitance of PANI-T/GO-10% could reach 1220 F g−1 at a current density of 0.5 A g−1, being much higher than the value of 648 F g−1 for PANI-T. After 500 cycles of charge–discharge testing, the composite retained 97% of its capacitance. These enhanced supercapacitive properties can be attributed to the two types of energy storage mechanism and the electrostatic interaction between GO and PANI-T. Preparation of such PANI-T/GO composite electrode materials by electrostatic adsorption thus provides an efficient approach for improvement of the supercapacitive properties of conducting polymers or metal oxides.
- Subjects
ELECTROSTATIC interaction; GRAPHENE oxide; POLYANILINES; CONDUCTING polymers; ELECTRIC capacity; COMPOSITE materials; SUPERCAPACITOR electrodes
- Publication
Journal of Electronic Materials, 2020, Vol 49, Issue 7, p4076
- ISSN
0361-5235
- Publication type
Article
- DOI
10.1007/s11664-020-08128-4