Three-dimensional skeleton networks of graphene wrapped polyaniline nanofibers: An excellent structure for high-performance flexible solid-state supercapacitors

Hu, Nantao; Zhang, Liling; Yang, Chao; Zhao, Jian; Yang, Zhi; Wei, Hao; Liao, Hanbin; Feng, Zhenxing; Fisher, Adrian; Zhang, Yafei; Xu, Zhichuan J.

doi:10.1038/srep19777

Title: Three-dimensional skeleton networks of graphene wrapped polyaniline nanofibers: An excellent structure for high-performance flexible solid-state supercapacitors

Journal Article · Fri Jan 22 00:00:00 EST 2016 · Scientific Reports

DOI:https://doi.org/10.1038/srep19777· OSTI ID:1253755

Hu, Nantao ^[1]; Zhang, Liling ^[2]; Yang, Chao ^[2]; Zhao, Jian ^[3]; Yang, Zhi ^[2]; Wei, Hao ^[2]; Liao, Hanbin ^[3]; Feng, Zhenxing ^[4]; Fisher, Adrian ^[5]; Zhang, Yafei ^[2]; Xu, Zhichuan J. ^[3]

Shanghai Jiao Tong Univ. (China); Nanyang Technological Univ. (Singapore)
Shanghai Jiao Tong Univ. (China)
Nanyang Technological Univ. (Singapore); Nanyang Technological Univ. (Singapore). Solar Fuels Lab.
Argonne National Lab. (ANL), Argonne, IL (United States). Chemical Sciences and Engineering Division
Univ. of Cambridge (United Kingdom)

Thin, robust, lightweight, and flexible supercapacitors (SCs) have aroused growing attentions nowadays due to the rapid development of flexible electronics. Graphene-polyaniline (PANI) hybrids are attractive candidates for high performance SCs. In order to utilize them in real devices, it is necessary to improve the capacitance and the structure stability of PANI. Here we report a hierarchical three-dimensional structure, in which all of PANI nanofibers (NFs) are tightly wrapped inside reduced graphene oxide (rGO) nanosheet skeletons, for high-performance flexible SCs. The as-fabricated film electrodes with this unique structure showed a highest gravimetric specific capacitance of 921 F/g and volumetric capacitance of 391 F/cm³. The assembled solid-state SCs gave a high specific capacitance of 211 F/g (1 A/g), a high area capacitance of 0.9 F/cm², and a competitive volumetric capacitance of 25.6 F/cm³. The SCs also exhibited outstanding rate capability (~75% retention at 20 A/g) as well as excellent cycling stability (100% retention at 10 A/g for 2000 cycles). Additionally, no structural failure and loss of performance were observed under the bending state. Lastly, this structure design paves a new avenue for engineering rGO/PANI or other similar hybrids for high performance flexible energy storage devices.

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Research Organization:: Argonne National Laboratory (ANL), Argonne, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: AC02-06CH11357

OSTI ID:: 1253755

Journal Information:: Scientific Reports, Vol. 6; ISSN 2045-2322

Publisher:: Nature Publishing GroupCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 110 works

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