Facile fabrication of three-dimensional highly ordered structural polyaniline-graphene bulk hybrid materials for high performance supercapacitor electrodes
Facile fabrication of three-dimensional highly ordered structural polyaniline-graphene bulk hybrid materials for high performance supercapacitor electrodes
复制标题
轻松制造用于高性能超级电容器电极的三维高度有序结构聚苯胺-石墨烯块状杂化材料
DOI：
10.1039/c3ta13513f
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发表时间：
2014-01-01
影响因子：
11.9
通讯作者：
Su, Xinyan
中科院分区：
文献类型：
--
作者：
Liu, Yu;Ma, Yu;Su, Xinyan
通过引入磺化三嗪（ST）功能分子，并通过氢键和π-π堆积作用将其吸附在石墨烯片上，构建了一种用于高性能超级电容器电极的三维高度有序结构聚苯胺-石墨烯体相杂化材料.添加ST的目的是实现石墨烯纳米片在水中的更好分散，随后通过静电相互作用诱导聚苯胺（PANI）的异相成核。因此，通过苯胺在水溶液中的原位化学氧化聚合，促使聚苯胺纳米棒在单个磺化三嗪功能化石墨烯纳米片（STGNS）的两个表面上垂直生长。采用紫外-可见光谱（UV-vis）、红外光谱（FTIR）、拉曼光谱（Raman）和X射线衍射（XRD）等手段对可控聚苯胺纳米棒阵列-磺化三嗪功能石墨烯纳米片（PANI-STGNS）杂化材料的形成机理进行了详细研究。优化的PANI-STGNS 10块体杂化材料在1 A g（-1）下具有高达1225 F g（-1）的比电容，以及出色的倍率性能和循环稳定性，这对于其在高性能超级电容器电极中的应用至关重要。
A novel approach to constructing three-dimensional (3D) highly ordered structural polyaniline-graphene bulk hybrid materials was proposed for high performance supercapacitor electrodes, in which a functional molecule, sulfonated triazine (ST), was introduced and adsorbed on graphene sheets via hydrogen bonding and pi-pi stacking interactions. The aim of adding ST is to achieve better dispersion of graphene nanosheets in water, and subsequently induce heterogeneous nucleation of polyaniline (PANI) through electrostatic interactions. Thus, the PANI nanorods were impelled to grow vertically on both surfaces of the individual sulfonated triazine functional graphene nanosheets (STGNS) via in situ chemical oxidative polymerization of aniline in aqueous solution. The formation mechanism of well-controlled PANI nanorod array-sulfonated triazine functional graphene nanosheet (PANI-STGNS) hybrid materials was investigated in detail using a combination of UV-vis, FTIR, Raman spectroscopy and XRD. The optimized PANI-STGNS10 bulk hybrid material possesses a specific capacitance as high as 1225 F g(-1) at 1 A g(-1), together with outstanding rate capability and cycling stability, which are essential for its application in high performance supercapacitor electrodes.