Facile synthesis of carbon nanofibers/MnO2 nanosheets as high-performance electrodes for asymmetric supercapacitors

We reported the facile synthesis of hollow carbon nanofibers/MnO2 (CNFs/MnO2) composites for high performance supercapacitor electrodes. The nanocomposites were prepared via electrospinning of carbon nanofibers/MnOx and subsequent hydrothermal coating of MnO2 nanosheets on the surface. The unique ho...

Full description

Saved in:
Bibliographic Details
Published in:Electrochimica acta 2016-08, Vol.210, p.754-761
Main Authors: Ning, Peigong, Duan, Xiaochuan, Ju, Xiaokang, Lin, Xiaoping, Tong, Xiaobin, Pan, Xi, Wang, Taihong, Li, Qiuhong
Format: Article
Language:English
Subjects:
Asymmetric supercapacitor
Carbon nanofibers
Electrospinning
MnO2
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We reported the facile synthesis of hollow carbon nanofibers/MnO2 (CNFs/MnO2) composites for high performance supercapacitor electrodes. The nanocomposites were prepared via electrospinning of carbon nanofibers/MnOx and subsequent hydrothermal coating of MnO2 nanosheets on the surface. The unique hollow structure and numerous MnO2 nanosheets increased the contact area between the electrodes and electrolyte so that the CNFs/MnO2 electrode exhibited higher electrochemical performance than the CNFs/MnOx composites. The CNFs/MnO2 composites displayed a specific capacitance of 151.1F/g at 1A/g, and 90% of the initial specific capacitance was maintained after 8000 cycles. An asymmetric supercapacitor was assembled with the CNFs/MnO2 composites and the active carbon. The asymmetric supercapacitor exhibited a high performance in 1M Na2SO4 aqueous solution with a working potential window ranging from 0 to 1.8V. Furthermore, the asymmetric supercapacitor possessed a cycling stability with 93.5% capacitance retained after 1500 cycles at 1A/g.
ISSN:0013-4686
1873-3859
DOI:10.1016/j.electacta.2016.05.214