A simple and innovative route to electrosynthesis of Eu2O3 nanoparticles and its nanocomposite with p-type conductive polymer: Characterisation and electrochemical properties.
A simple and innovative route to electrosynthesis of Eu2O3 nanoparticles and its nanocomposite with p-type conductive polymer: Characterisation and electrochemical properties.
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DOI：
10.1016/j.jcis.2016.03.065
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发表时间：
2016-07
影响因子：
9.9
通讯作者：
H. Mohammad Shiri;A. Ehsani
中科院分区：
文献类型：
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作者：
H. Mohammad Shiri;A. Ehsani
导电聚合物通常用作氧化还原超级电容器的电极。但是，由于重复充放电过程中聚合物上的应力积累，纯导电聚合物的循环寿命较差，需要进一步提高。将传统的导电聚合物活性材料与纳米材料结合起来制备杂化电极被认为是有效的途径之一。本文采用一种简单快速的电化学方法制备了Eu 2 O3纳米粒子和杂化POAP/Eu 2 O3作为电化学超级电容器的活性电极。采用X射线粉末衍射、场发射扫描电子显微镜和X射线能谱对Eu 2 O3和复合薄膜的结构和形貌进行了表征。采用循环伏安法、恒流充放电和交流阻抗等电化学方法研究了它们的电化学性能。所制备的复合材料具有优异的比电容性能和95%的库仑效率。所制备的复合材料具有优异的电容性能，其比电容高达375 F g-1，库仑效率为95%。本文介绍了一种新型的纳米复合材料，该材料具有易于合成、高活性表面积和在水溶液中的稳定性等优点。
Conductive polymers are usually used as an electrode in redox supercapacitor. However, due to accumulation of stress on polymer during repeating charge-discharge process, the cycle life of pure conductive polymer is poor, which needs to be further improved. For this purpose, combining conventional conductive polymers active material and nanomaterials to fabricate hybrid electrode has been considered to be one of the efficient avenues. In this paper, a simple and rapid electrochemical method has been carried out to prepare Eu2O3nanoparticles and hybrid POAP/Eu2O3to serve as the active electrode for electrochemical supercapacitor. Structural and morphological characterisations of Eu2O3and composite film were carried out using powder X-ray diffraction, field emission scanning electron microscopy and energy dispersion of X-rays. Their electrochemical properties were also investigated using cyclic voltammetry, galvanostatic charge–discharge and electrochemical impedance spectroscopy. The as-prepared composites had excellent properties in the specific capacitance and a coulombic efficiency of 95%. The as-prepared composites had excellent properties in the capacitance, and its specific capacitance was up to 375 F g−1and a coulombic efficiency of 95%. This work introduces new nanocomposite materials for electrochemical redox capacitors with advantages including ease synthesis, high active surface area and stability in an aqueous electrolyte.