.png){kind=icon}
.png){kind=icon}
Return
ZnCo2O4/CuS/rGO ternary nanocomposites with enhanced capacitance and stability for advanced supercapacitors
.png){kind=icon}
PRE
AI
A
A
S
P
DOI：10.1007/s10934-025-01907-6.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
The development of efficient and stable electrode materials is essential for advancing next-generation supercapacitors. In this study, ternary ZnCo2O4/CuS/rGO nanocomposites were successfully fabricated using a straightforward hydrothermal approach. The resulting hybrid exhibits a layered, sheet-like structure with a high specific surface area of 78.4 m(2) g(-1) and mesopores averaging 3 nm, providing plentiful active sites and promoting rapid ion transport. Electrochemical evaluation shows that the ZnCo2O4/CuS/rGO electrode achieves a high specific capacitance of 953 F g(-1) (158.8 mAh g(- 1)) at 1 A g(-1), nearly doubling the performance of the binary ZnCo2O4/CuS material, which exhibits the specific capacitance of 508 F g(-1) (84.6 mAhg(- 1)) at 1 A g(-1)). The composite also demonstrates outstanding stability, retaining 95.5% of its initial capacitance and a coulombic efficiency of similar to 101.5% after 5000 cycles. The assembled asymmetric supercapacitor delivers an energy density of 65 Wh kg(-1) at 877 W kg(-1), while maintaining 35 Wh kg(-1) at 3117 W kg(-1), confirming its high-rate capability and robust performance. These findings demonstrate that ZnCo2O4/CuS/rGO is an excellent electrode material for high-performance energy storage devices since it is both inexpensive and long-lasting.
Keywords:
ZnCo2O4/CuS/rGO nanocomposite
Hydrothermal synthesis
Supercapacitor electrode
Specific capacitance
Asymmetric device
Journal
IF:
3.2
Papers:
154
Citations:
5.0K
Organization
No organization information available