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Supercapacitors Based on Flexible Graphene/Polyaniline Nanofiber Composite Films

Qiong Wu, Yuxi Xu, Zhiyi Yao, Anran Liu, Gaoquan Shi

ACS Nano · 2010 · 2,239 citations

doi.org/10.1021/nn1000035

Abstract

Composite films of chemically converted graphene (CCG) and polyaniline nanofibers (PANI-NFs) were prepared by vacuum filtration the mixed dispersions of both components. The composite film has a layered structure, and PANI-NFs are sandwiched between CCG layers. Furthermore, it is mechanically stable and has a high flexibility; thus, it can be bent into large angles or be shaped into various desired structures. The conductivity of the composite film containing 44% CCG (5.5 x 10(2) S m(-1)) is about 10 times that of a PANI-NF film. Supercapacitor devices based on this conductive flexible composite film showed large electrochemical capacitance (210 F g(-1)) at a discharge rate of 0.3 A g(-1). They also exhibited greatly improved electrochemical stability and rate performances.

Cite this paper

Wu, Q., Xu, Y., Yao, Z., Liu, A., & Shi, G. (2010). Supercapacitors based on flexible Graphene/Polyaniline nanofiber composite films. ACS Nano, 4(4), 1963–1970. https://doi.org/10.1021/nn1000035

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