Back to Search
Start Over
Facile synthesis of carbon nanotube-supported NiO//Fe 2 O 3 for all-solid-state supercapacitor s .
- Source :
-
Beilstein journal of nanotechnology [Beilstein J Nanotechnol] 2019 Sep 23; Vol. 10, pp. 1923-1932. Date of Electronic Publication: 2019 Sep 23 (Print Publication: 2019). - Publication Year :
- 2019
-
Abstract
- We have successfully prepared iron oxide and nickel oxide on carbon nanotubes on carbon cloth for the use in supercapacitors via a simple aqueous reduction method. The obtained carbon cloth-carbon nanotube@metal oxide (CC-CNT@MO) three-dimensional structures combine the high specific capacitance and rich redox sites of metal oxides with the large specific area and high electrical conductivity of carbon nanotubes. The prepared CC-CNT@Fe <subscript>2</subscript> O <subscript>3</subscript> anode reaches a high capacity of 226 mAh·g <superscript>-1</superscript> at 2 A·g <superscript>-1</superscript> with a capacitance retention of 40% at 40 A·g <superscript>-1</superscript> . The obtained CC-CNT@NiO cathode exhibits a high capacity of 527 mAh·g <superscript>-1</superscript> at 2 A·g <superscript>-1</superscript> and an excellent rate capability with a capacitance retention of 78% even at 40 A·g <superscript>-1</superscript> . The all-solid-state asymmetric supercapacitor fabricated with these two electrodes delivers a high energy density of 63.3 Wh·kg <superscript>-1</superscript> at 1.6 kW·kg <superscript>-1</superscript> and retains 83% of its initial capacitance after 5000 cycles. These results demonstrate that our simple aqueous reduction method to combine CNT and metal oxides reveals an exciting future in constructing high-performance supercapacitors.<br /> (Copyright © 2019, Zhang et al.; licensee Beilstein-Institut.)
Details
- Language :
- English
- ISSN :
- 2190-4286
- Volume :
- 10
- Database :
- MEDLINE
- Journal :
- Beilstein journal of nanotechnology
- Publication Type :
- Academic Journal
- Accession number :
- 31598459
- Full Text :
- https://doi.org/10.3762/bjnano.10.188