Facile Synthesis of A 3D Flower-Like Mesoporous Ni@C Composite Material for High-Energy Aqueous Asymmetric Supercapacitors.
Chem Asian J
; 13(8): 1005-1011, 2018 Apr 16.
Article
in En
| MEDLINE
| ID: mdl-29480649
ABSTRACT
A 3D flower-like mesoporous Ni@C composite material has been synthesized by using a facile and economical one-pot hydrothermal method. This unique 3D flower-like Ni@C composite, which exhibited a high surface area (522.4â
m2 g-1 ), consisted of highly dispersed Ni nanoparticles on mesoporous carbon flakes. The effect of calcination temperature on the electrochemical performance of the Ni@C composite was systematically investigated. The optimized material (Ni@Câ
700) displayed high specific capacity (1306â
F g-1 at 2â
A g-1 ) and excellent cycling performance (96.7 % retention after 5000â
cycles). Furthermore, an asymmetric supercapacitor (ASC) that contained Ni@Câ
700 as cathode and mesoporous carbon (MC) as anode demonstrated high energy density (60.4â
W h kg-1 at a power density of 750â
W kg-1 ).
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Chem Asian J
Year:
2018
Document type:
Article