Flexible graphene-polyaniline composite paper for high-performance supercapacitor
Flexible graphene-polyaniline composite paper for high-performance supercapacitor
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用于高性能超级电容器的柔性石墨烯-聚苯胺复合纸
DOI：
10.1039/c2ee24203f
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发表时间：
2013-04-01
影响因子：
32.5
通讯作者：
Yu, Shu-Hong
中科院分区：
文献类型：
--
作者：
Cong, Huai-Ping;Ren, Xiao-Chen;Yu, Shu-Hong
采用简便的一步法，首次大规模制备出具有灰色金属光泽的独立石墨烯纸。在此，氧化石墨烯分散体组装成有序纸与氧化石墨烯化学还原成石墨烯同时发生。石墨烯纸具有柔韧性好、重量低（0.2 g cm(-3)）和导电性高（15 Omega sq(-1)）等优点。此外，石墨烯纸的大小和形状与所使用的聚四氟乙烯基板的大小和形状可以自由交换。柔性石墨烯-聚苯胺纸随后表现出优异的超级电容器性能，具有增强的比电容（763 F g(-1)）和良好的循环稳定性，通过在上述石墨烯纸上电聚合聚苯胺纳米棒。本文提出的方法为开发低成本的电极材料用于潜在的能量存储装置显示了巨大的希望。
Free-standing graphene paper with a grey metallic luster has been fabricated for the first time, by a convenient one-step method on a large scale. Herein, the assembly of graphene oxide dispersion into ordered paper occurs simultaneously with the chemical reduction of graphene oxide to graphene. The graphene paper presents the advantages of good flexibility, low weight (0.2 g cm(-3)) and high electrical conductivity (15 Omega sq(-1)). Moreover, the size and shape of the graphene paper are freely exchanged for those of the Teflon substrate used. The flexible graphene-PANI paper subsequently exhibits excellent supercapacitor performance with an enhanced specific capacitance (763 F g(-1)) and good cycling stability by electropolymerization of PANI nanorods on the above graphene paper. The method presented here shows great promise for the development of low-cost electrode materials in potential energy storage devices.