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183. Hierarchical composites of polyaniline–graphene nanoribbons–carbon nanotubes as electrode materials in all-solid-state supercapacitors.
作者:M. K. Liu, Y.-E. Miao, C. Zhang, W. W. Tjiu, Z. B. Yang, H. S. Peng, T. X. Liu*
關鍵字:graphene nanoribbons, carbon nanotubes, polyaniline, composites, supercapacitors
論文來源:期刊
具體來源:Nanoscale, 2013, 5(16), 7312-7320.
發表時間:2013年

A three dimensional (3D) polyaniline (PANI)–graphene nanoribbon (GNR)–carbon nanotube (CNT) composite, PANI–GNR–CNT, has been prepared via in situ polymerization of an aniline monomer on the surface of a GNR–CNT hybrid. Here, the 3D GNR–CNT hybrid has been conveniently prepared by partially unzipping the pristine multi-walled CNTs, while the residual CNTs act as “bridges” connecting different GNRs. The morphology and structure of the resulting hybrid materials have been characterized using transmission electron microscopy (TEM), scanning electron microscopy (SEM), Raman spectroscopy and X-ray diffraction (XRD). Electrochemical tests reveal that the hierarchical PANI–GNR–CNT composite based on the two-electrode cell possesses much higher specific capacitance (890 F g-1) than the GNR–CNT hybrid (195 F g-1) and neat PANI (283 F g-1) at a discharge current density of 0.5 A g-1. At the same time, the PANI–GNR–CNT composite displays good cycling stability with a retention ratio of 89% after 1000 cycles, suggesting that this novel PANI–GNR–CNT composite is a promising candidate for energy storage applications.

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