High Performance All-solid Supercapacitors Based on the Network of Ultralong Manganese dioxide/Polyaniline Coaxial Nanowires.

Content Provider	Europe PMC
Author	Zhou, Junli Yu, Lin Liu, Wei Zhang, Xiaodan Mu, Wei Du, Xu Zhang, Zhe Deng, Yulin
Copyright Year	2015
Abstract	In recent years, thin, lightweight and flexible solid supercapacitors are of considerable interest as energy storage devices. Here we demonstrated all-solid supercapacitors (SSCs) with high electrochemical properties, low self-discharge characteristics based on manganese dioxide/polyaniline (MNW/PANI) coaxial nanowire networks. The synergistic effect of MnO2/PANI plus the unique coaxial nanostructure of the ultralong nanowires with a highly interconnected network effectively enhance the conductivity and capacitive performance of the SSCs device. The MNW/PANI composite with 62.5% MnO2 exhibits an outstanding areal specific capacitance reaching 346 mF/cm(2) at 5 mV s(-1) which is significant higher than most previously reported solid supercapacitors (15.3 mF/cm(2)-109 mF/cm(2)) and is close to the that of the best graphene films solid state supercapacitors (372 mF/cm(2)). In contrast, only 190 mF/cm(2) of areal specific capacitance was obtained for the pure MnO2 NW network. The supercapacitors also exhibited low leakage current as small as 20.1 μA, which demonstrated that the MNW/PANI SSCs have great potential for practical applications.
Journal	Scientific Reports [Sci Rep]
Volume Number	5
DOI	10.1038/srep17858
PubMed Central reference number	PMC4672316
PubMed reference number	26644364
e-ISSN	20452322
Language	English
Publisher	Nature Publishing Group
Publisher Date	2015-12-08
Access Restriction	Open
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary