Journal
JOURNAL OF POWER SOURCES
Volume 249, Issue -, Pages 1-8Publisher
ELSEVIER
DOI: 10.1016/j.jpowsour.2013.10.068
Keywords
Nanoparticles; Nanostructures; Electrochemistry; Asymmetric supercapacitors; Manganese dioxides
Funding
- Taiwan Textile Research Institute
Ask authors/readers for more resources
An asymmetric supercapacitor (ASC) uses very thin petal-shaped MnO2 nanosheets as the positive electrode and a network of carbon nanotube-embedded polyacrylonitrile-based carbon nanofibers (CNT-CNF electrodes) as the negative electrode. It has a high specific capacitance and a high specific energy density in 0.5 M Na2SO4. An assembled MnO2//CNT-CNF ASC is operated reversibly at a high cell voltage of 2.0 V and exhibits a high specific capacitance of 93.99 F g(-1) and an excellent energy density of 52.22 Wh kg(-1), which is better than those of ASCs that are based on MnO2//carbon, which can be found in the literature. The Mn02//CNT-CNF ASC has superior cycling stability with 92% retention of initial specific capacitance after 2000 cycles. (C) 2013 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available