Flower-like polyaniline/graphene hybrids for high-performance supercapacitor
Flower-like polyaniline/graphene hybrids for high-performance supercapacitor
复制标题
用于高性能超级电容器的花状聚苯胺/石墨烯杂化物
DOI：
10.1016/j.compscitech.2017.02.026
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发表时间：
2017-04-12
影响因子：
9.1
通讯作者：
Liu, Xiangyang
中科院分区：
文献类型：
--
作者：
Ke, Fuyou;Liu, Yu;Liu, Xiangyang
采用一锅法合成了一种新型花状聚苯胺/石墨烯杂化材料（PANI-ATRGO），并将其用作超级电容器的电极材料。结合傅里叶变换红外光谱、紫外可见吸收光谱、拉曼光谱、X射线衍射和电化学技术，系统地研究了这种独特结构的结构、形成机理和电化学性能。结果表明，ATRGO的“V型”氨基和PANT链之间的超分子组装在花状纳米结构的形成中起着关键作用。与原始PANI（487 F g（-1）at 1 A g（-1））相比，PANI-ATRGO电极材料除了优异的倍率容量和长期循环稳定性之外，还表现出超级电容器的比电容（1510 F g（-1）at 1 A g（-1））的显著改善。此外，我们还发现花状PANI-ATRGO杂化物比我们先前研究中相应的纳米棒阵列杂化物具有更好的电化学性能。这揭示了控制杂化材料的分级结构在高性能超级电容器开发中的意义。(C)2017爱思唯尔有限公司版权所有
A novel flower-like polyaniline/graphene hybrid (PANI-ATRGO) is prepared by a one-pot synthesis and used as electrode materials for supercapacitors. The structure, formation mechanism and electrochemical properties of such unique architecture are systematically investigated by combining Fourier transform infrared spectroscopy, Ultraviolet visible absorption spectroscopy, Raman spectroscope, X-ray diffraction and electrochemical techniques. The results suggest that "V-type" amino groups of ATRGO and supermolecular assembly between PANT chains play the key role in the formation of flower-like nanostructures. Compare to pristine PANI (487 F g(-1) at 1 A g(-1)), PANI-ATRGO electrode materials exhibit a remarkable improvement of the specific capacitance (1510 F g(-1) at 1 A g(-1)) for supercapacitor in addition to excellent rate capacity and long-term cycling stability. Moreover, it is found that flower-like PANI-ATRGO hybrids exhibit better electrochemical properties than the corresponding nanorod-array hybrids in our previous study. This reveals the significance of controlling the hierarchical structure of hybrid materials in the development of high-performance supercapacitor. (C) 2017 Elsevier Ltd. All rights reserved.