New synthesized ionic liquid functionalized graphene oxide: Synthesis, characterization and its nanocomposite with conjugated polymer as effective electrode materials in an energy storage device
New synthesized ionic liquid functionalized graphene oxide: Synthesis, characterization and its nanocomposite with conjugated polymer as effective electrode materials in an energy storage device
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DOI：
10.1016/j.electacta.2018.09.177
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发表时间：
2018-12
影响因子：
6.6
通讯作者：
F. B. Ajdari;E. Kowsari;A. Ehsani;Milan Schorowski;T. Ameri
中科院分区：
文献类型：
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作者：
F. B. Ajdari;E. Kowsari;A. Ehsani;Milan Schorowski;T. Ameri
在这项工作中，我们通过化学途径合成了胺官能化的氧化石墨烯，称为FGO-235和FGO-178。采用FT-IR、拉曼光谱、热重分析（TG）、场发射扫描电镜（FE-SEM）、X射线衍射（XRD）和X射线光电子能谱（XPS）等分析手段对所制备的功能化氧化石墨烯（FIGO）进行了表征。为了提高聚邻氨基苯酚（POAP）的电化学性能，在合成的多孔结构FGO-178和FGO-235的存在下，通过电聚合POAP制备了FGO-235/POAP和FGO-178/POAP薄膜，作为电化学超级电容器的活性电极。关于电化学方法，恒电流充放电实验，循环伏安法（CV），和电化学阻抗谱进行，以调查系统的性能。FGO-235/POAP和FGO-178/POAP的比电荷分别为820和348 C g− 1。本工作介绍了一种最有效的电化学氧化还原电容器材料，其具有易于合成，高活性表面积和在水性电解质中的稳定性。
In this work, we synthesized amine functionalized graphene oxide called FGO-235 and FGO-178 by a chemical route. The prepared functionalized graphene oxide (FGOs) were characterized by different analytical methods including FT-IR, Raman spectroscopy, Thermal gravimetry (TG), Field-emission scanning electron microscopy (FE-SEM), X-Ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). To improve the electrochemical properties of the poly ortho aminophenol (POAP), we prepared FGO-235/POAP and FGO-178/POAP films through electro-polymerization of POAP in the presence of synthesized FGO-178 and FGO-235 with a porous structure, serving as the active electrode for electrochemical supercapacitor. With regards to electrochemical methods, galvanostatic charge–discharge experiments, cyclic voltammetry (CV), and electrochemical impedance spectroscopy were performed in order to investigate the performance of the system. The specific charges of 820 and 348 C g−1were obtained for FGO-235/POAP and FGO-178/POAP, respectively. This work introduced one of the most efficient materials for electrochemical redox capacitors which enjoyed easy synthesis, high active surface area, and stability in an aqueous electrolyte.