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

Abstract

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/cm 3. 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/cm 2, and a competitive volumetric capacitance of 25.6 F/cm 3. 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.

Authors:
 [1];  [2];  [2];  [3];  [2];  [2];  [3];  [4];  [5];  [2];  [3]
  1. Shanghai Jiao Tong Univ. (China); Nanyang Technological Univ. (Singapore)
  2. Shanghai Jiao Tong Univ. (China)
  3. Nanyang Technological Univ. (Singapore); Nanyang Technological Univ. (Singapore). Solar Fuels Lab.
  4. Argonne National Lab. (ANL), Argonne, IL (United States). Chemical Sciences and Engineering Division
  5. Univ. of Cambridge (United Kingdom)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1253755
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 6; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Hu, Nantao, Zhang, Liling, Yang, Chao, Zhao, Jian, Yang, Zhi, Wei, Hao, Liao, Hanbin, Feng, Zhenxing, Fisher, Adrian, Zhang, Yafei, and Xu, Zhichuan J. Three-dimensional skeleton networks of graphene wrapped polyaniline nanofibers: An excellent structure for high-performance flexible solid-state supercapacitors. United States: N. p., 2016. Web. doi:10.1038/srep19777.
Hu, Nantao, Zhang, Liling, Yang, Chao, Zhao, Jian, Yang, Zhi, Wei, Hao, Liao, Hanbin, Feng, Zhenxing, Fisher, Adrian, Zhang, Yafei, & Xu, Zhichuan J. Three-dimensional skeleton networks of graphene wrapped polyaniline nanofibers: An excellent structure for high-performance flexible solid-state supercapacitors. United States. doi:10.1038/srep19777.
Hu, Nantao, Zhang, Liling, Yang, Chao, Zhao, Jian, Yang, Zhi, Wei, Hao, Liao, Hanbin, Feng, Zhenxing, Fisher, Adrian, Zhang, Yafei, and Xu, Zhichuan J. Fri . "Three-dimensional skeleton networks of graphene wrapped polyaniline nanofibers: An excellent structure for high-performance flexible solid-state supercapacitors". United States. doi:10.1038/srep19777. https://www.osti.gov/servlets/purl/1253755.
@article{osti_1253755,
title = {Three-dimensional skeleton networks of graphene wrapped polyaniline nanofibers: An excellent structure for high-performance flexible solid-state supercapacitors},
author = {Hu, Nantao and Zhang, Liling and Yang, Chao and Zhao, Jian and Yang, Zhi and Wei, Hao and Liao, Hanbin and Feng, Zhenxing and Fisher, Adrian and Zhang, Yafei and Xu, Zhichuan J.},
abstractNote = {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.},
doi = {10.1038/srep19777},
journal = {Scientific Reports},
issn = {2045-2322},
number = ,
volume = 6,
place = {United States},
year = {2016},
month = {1}
}

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