Plasma-induced, nitrogen-doped graphene-based aerogels for high-performance supercapacitors.
Light Sci Appl
; 5(10): e16130, 2016 Oct.
Article
in En
| MEDLINE
| ID: mdl-30167120
ABSTRACT
Commonly used energy storage devices include stacked layers of active materials on two-dimensional sheets, and the limited specific surface area restricts the further development of energy storage. Three-dimensional (3D) structures with high specific surface areas would improve device performance. Herein, we present a novel procedure to fabricate macroscopic, high-quality, nitrogen-doped, 3D graphene/nanoparticle aerogels. The procedure includes vacuum filtration, freeze-drying, and plasma treatment, which can be further expanded for large-scale production of nitrogen-doped, graphene-based aerogels. The behavior of the supercapacitor is investigated using a typical nitrogen-doped graphene/Fe3O4 nanoparticle 3D structure (NG/Fe3O4). Compared with 3D graphene/Fe3O4 structures prepared by the traditional hydrothermal method, the NG/Fe3O4 supercapacitor prepared by the present method has a 153% improvement in specific capacitance, and there is no obvious decrease in specific capacitance after 1000 cycles. The present work provides a new and facile method to produce large-scale, 3D, graphene-based materials with high specific capacitance for energy storage.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Light Sci Appl
Year:
2016
Type:
Article
Affiliation country:
China