One-pot synthesis of γ-MnS/reduced graphene oxide with enhanced performance for aqueous asymmetric supercapacitors.
Nanotechnology
; 28(6): 065402, 2017 Feb 10.
Article
em En
| MEDLINE
| ID: mdl-28050971
ABSTRACT
In this work, γ-MnS/reduced graphene oxide composites (γ-MnS/rGO) were prepared using a facile one-pot hydrothermal method. As an electrode material for supercapacitors, the γ-MnS/rGO-60 composite obtained under dosages of graphene oxide was 60 mg and exhibited an enhanced specific capacitance of 547.6 F g-1 at a current density of 1 A g-1, and outstanding rate capability (65% capacitance retention at 20 A g-1), with superior cycling stability and electrochemical reversibility. An asymmetric supercapacitor assembled from γ-MnS/rGO-60 composite and rGO (γ-MnS/rGO-60//rGO) showed a voltage window of 0-1.6 V and delivered a high energy density of 23.1 W h kg-1 at a power density of 798.8 W kg-1, and 15.9 W h kg-1 at 4.5 kW kg-1. Moreover, two such 1.0 × 1.0 cm2 devices connected together in series easily light up a group of LED lights, showing its potential practical application as an attractive energy storage device.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Nanotechnology
Ano de publicação:
2017
Tipo de documento:
Article