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|Title:||Self-assembled graphene@PANI nanoworm composites with enhanced supercapacitor performance|
|Citation:||Luo, Y., Kong, D., Jia, Y., Luo, J., Lu, Y., Zhang, D., Qiu, K., Li, C.M., Yu, T. (2013-05-07). Self-assembled graphene@PANI nanoworm composites with enhanced supercapacitor performance. RSC Advances 3 (17) : 5851-5859. ScholarBank@NUS Repository. https://doi.org/10.1039/c3ra00151b|
|Abstract:||Self-assembled hierarchical graphene@polyaniline (PANI) nanoworm composites have been fabricated using graphene oxide (GO) and aniline as the starting materials. The worm-like PANI nanostructures were successfully obtained via a simple polymerization route. The graphene-wrapped hierarchical PANI nanoworm structures could be prepared using a three-step process by dispersing the PANI nanoworms sequentially into the relevant solution. The morphologies and microstructures of the samples were examined by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy. Electrochemical properties were also characterized by cyclic voltammetry (CV) and galvanostatic charge-discharge. The results indicated that the integration of graphene and the worm-like PANI nanocomposites possessed excellent electrochemical properties. These hierarchical worm-like graphene@PANI nanostructures could afford an interconnected network with a lot of well-defined nanopores, and further provided more active sites and excellent electron transfer path for improving the electric conductivity as well as good mechanical properties. Supercapacitor devices based on these self-assembled nanocomposites showed high electrochemical capacitance (488.2 F g-1) at a discharge rate of 0.5 A g -1, which also could effectively improve electrochemical stability and rate performances. © 2013 The Royal Society of Chemistry.|
|Source Title:||RSC Advances|
|Appears in Collections:||Staff Publications|
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