Approaching high performance Ni(Co) molybdate electrode materials for flexible hybrid devices.

Area of Science:

• Materials Science
• Electrochemistry
• Nanotechnology

Background:

• Transition metal molybdates are promising electrode materials for supercapacitors.
• Optimizing electrode material design is key to improving electrochemical performance.

Purpose of the Study:

• To prepare Ni_1-xCo_xMoO₄·nH₂O nanostructures.
• To investigate their potential as supercapacitor electrodes.

Main Methods:

• Facile hydrothermal synthesis of Ni_1-xCo_xMoO₄·nH₂O nanostructures.
• Electrochemical characterization for supercapacitor performance evaluation.

Main Results:

• The Ni_1-xCo_xMoO₄·nH₂O nanostructures achieved a specific capacitance of 1390 F g^-1 at 1 A g^-1.
• The supercapacitor device demonstrated an energy density of 72.45 Wh kg^-1 at a power density of 2688.8 W kg^-1.
• The electrode materials exhibited excellent cycling and mechanical stability.

Conclusions:

• Synergistic effects between Ni and Co elements enhance electrochemical performance.
• Ni_1-xCo_xMoO₄·nH₂O nanostructures are effective electrode materials for high-performance supercapacitors.
• The developed supercapacitors show great potential for practical energy storage applications.