Title : ( Electrospun Carbon Nanofibers with in Situ Encapsulated Co3O4 Nanoparticles as Electrodes for High-Performance Supercapacitors )
Authors: S. Abouali , M. Akbari Garakani , Biao Zhang , Zheng-Long Xu , Elham Kamali Heidari , Jian-qiu Huang , Jiaqiang Huang , Jang-Kyo Kim ,
Full TextAbstract
A facile electrospinning method with subsequent heat treatments is employed to prepare carbon nanofibers (CNFs) containing uniformly dispersed Co3O4 nanoparticles as electrodes for supercapacitors. The Co3O4/ CNF electrodes with ∼68 wt % active particles deliver a remarkable capacitance of 586 F g−1 at a current density of 1 A g−1. When the current density is increased to 50 A g−1, ∼66% of the original capacitance is retained. The electrodes also present excellent cyclic stability of 74% capacity retention after 2000 cycles at 2 A g−1. These superior electrochemical properties are attributed to the uniform dispersion of active particles in the CNF matrix, which functions as a conductive support. The onionlike graphitic layers formed around the Co3O4 nanoparticles not only improve the electrical conductivity of the electrode but also prevent the separation of the nanoparticles from the carbon matrix.
Keywords
, cobalt oxide, electrospinning, carbon nanofiber, graphitization, pseudocapacitance, supercapacitor
@article{paperid:1065587,
author = {S. Abouali and M. Akbari Garakani and Biao Zhang and Zheng-Long Xu and Kamali Heidari, Elham and Jian-qiu Huang and Jiaqiang Huang and Jang-Kyo Kim},
title = {Electrospun Carbon Nanofibers with in Situ Encapsulated Co3O4 Nanoparticles as Electrodes for High-Performance Supercapacitors},
journal = {ACS Applied Materials and Interfaces},
year = {2015},
volume = {7},
number = {24},
month = {June},
issn = {1944-8244},
pages = {13503--13507},
numpages = {4},
keywords = {cobalt oxide; electrospinning; carbon nanofiber; graphitization; pseudocapacitance; supercapacitor},
}
%0 Journal Article
%T Electrospun Carbon Nanofibers with in Situ Encapsulated Co3O4 Nanoparticles as Electrodes for High-Performance Supercapacitors
%A S. Abouali
%A M. Akbari Garakani
%A Biao Zhang
%A Zheng-Long Xu
%A Kamali Heidari, Elham
%A Jian-qiu Huang
%A Jiaqiang Huang
%A Jang-Kyo Kim
%J ACS Applied Materials and Interfaces
%@ 1944-8244
%D 2015
