.png){kind=icon}
.png){kind=icon}
Return
Dual-carbon and chalcogenide engineered Ni3Se4/delaminated V2C MXene /reduced graphene oxide composite as the bifunctional electrode for asymmetric supercapacitor and hydrogen evolution applications
.png){kind=icon}
PRE
AI
Y
B
H
R
J
DOI：10.1039/d6ta01599a.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
The rational design of multifunctional materials with superior electrochemical properties is vital for advancing energy storage and conversion technologies. Here, a ternary Ni3Se4/V2C/reduced graphene oxide (rGO) composite was developed, combining dual-carbon components with chalcogenides for supercapacitors and hydrogen evolution applications. For comparison, Ni3Se4, Ni3Se4/V2C, and Ni3Se4/rGO materials were also synthesized, and their electrochemical features were examined. In Ni3Se4/V2C/rGO, the Ni3Se4 exhibits a nanorod-nanoparticle morphology, while V2C nanosheets and rGO nanoflakes provide a conductive and robust framework. The Ni3Se4/V2C/rGO yields a specific capacity of 186 mA h g(-1) (1031 F g(-1)) at 1 A g(-1), with 67% rate capability at 30 A g(-1), and outstanding cycling stability of 96% after 5000 cycles at 10 A g(-1). The Ni3Se4/V2C/rGO//activated carbon device delivers 72.4 Wh kg(-1) and 16 kW kg(-1) of energy and power densities, respectively. It shows 90% capacity retention after 10 000 cycles and 97% coulombic efficiency at 10 A g(-1). The Ni3Se4/V2C/rGO exhibits excellent HER activity, providing an overpotential of 118.3 mV at 10 mA cm(-2), with a Tafel slope of 112 mV dec(-1), abundant active sites, and stability over 24 h. These results establish Ni3Se4/V2C/rGO as a notable bifunctional component for integrated energy storage and energy conversion applications.
Keywords:
NISE2 NANOPARTICLES
SELECTIVE SYNTHESIS
HIGHLY EFFICIENT
PERFORMANCE
ELECTROCATALYST
NANOWIRES
BATTERY
FOAM
Journal
IF:
9.5
Papers:
3.3W
Citations:
21.7W
Organization
Cited Papers