Polypyrrole/iron oxide/reduced graphene oxide ternary composite as a binderless electrode material with high cyclic stability for supercapacitors

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• 作者：Adam Moyseowicz ^{adam.moyseowicz@pwr.edu.pl} ; Agata Śliwak ^{agata.sliwak@pwr.edu.pl} ; Ewa Miniach ^{ewa.miniach@pwr.edu.pl} ; Grażyna Gryglewicz ; ^{grazyna.gryglewicz@pwr.edu.pl}
• 关键词：Nano-structures ; Polymer-matrix composites (PMCs) ; 3-dimensional reinforcement ; Electrical properties ; Graphene-based composite
• 刊名：Composites Part B: Engineering
• 出版年：2017
• 出版时间：15 January 2017
• 年：2017
• 卷：109
• 期：Complete
• 页码：23-29
• 全文大小：1726 K
• 卷排序：109

文摘

Herein, we present a facile two-step synthesis of polypyrrole/Fe2O3/reduced graphene oxide (PFG) ternary composite. It includes the preparation of the binary Fe2O3/reduced graphene oxide (FG) composite under hydrothermal conditions, followed by oxidative polymerization of pyrrole on the FG composite surface. X-ray diffraction measurements revealed the presence of the α-Fe2O3 phase in both composites. The electrochemical measurements performed using the composite electrodes in a 1 M Na2SO4 solution revealed that the binder-free PFG electrode exhibits a high specific capacitance of 140 F g−1 with an excellent capacitance retention of 93% after 5000 cycles at 1 A g−1 which can be attributed to the synergistic effect between polypyrrole and FG composite.