Anzeige
Erschienen in:
17.12.2018
Electrodeposited nickel aluminum-layered double hydroxide on Co3O4 as binder-free electrode for supercapacitor
Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 3/2019
EinloggenAktivieren Sie unsere intelligente Suche, um passende Fachinhalte oder Patente zu finden.
Wählen Sie Textabschnitte aus um mit Künstlicher Intelligenz passenden Patente zu finden. powered by
Markieren Sie Textabschnitte, um KI-gestützt weitere passende Inhalte zu finden. powered by
Abstract
Here, we report a heterostructured core–shell electrode consists of cobalt oxide (Co3O4) nanowire core and nickel aluminum (NiAl)-layered double hydroxide (NiAl-LDH; herein Co3O4@LDH) nanosheet shell grown on nickel foam as advanced electrode for supercapacitor. Benefiting from the core–shell configuration and smart hybridization, the optimized Co3O4@LDH core–shell electrode exhibits a high capacitance of 2011 F g−1 at 2 A g−1 and remains 1455 F g−1 at 40 A g−1, which outperforms the electrochemical performance of individual component of Co3O4 (720 F g−1 at 2 A g−1). A hybrid supercapacitor using Co3O4@LDH as positive electrode and carbon nanotube as negative electrode delivers an energy density of 18.1 Wh kg−1 at a power density of 375 kW kg−1 at a current density of 0.5 A g−1. Smart hybridization of core–shell electrode shows great promise as advanced electrode materials for supercapacitor with high electrochemical performance.