Flexible MXene/carbon nanotube composite paper with high volumetric capacitance

Area of Science:

• Materials Science
• Electrochemistry
• Nanotechnology

Background:

• Supercapacitors require advanced electrode materials for improved energy density and cycle life.
• MXene and carbon nanotubes (CNTs) are promising nanomaterials for energy storage applications due to their unique properties.

Purpose of the Study:

• To fabricate free-standing and flexible sandwich-like MXene/CNT paper electrodes.
• To evaluate the electrochemical performance of these composite electrodes for supercapacitor applications.

Main Methods:

• A simple filtration method was employed to create alternating layers of MXene and CNTs.
• The fabricated paper was characterized and tested as an electrode material in supercapacitors.

Main Results:

• The sandwich-like MXene/CNT paper demonstrated high volumetric capacitances.
• Excellent rate capabilities and cycling stability were observed for the composite electrodes.
• The free-standing and flexible nature of the paper was confirmed.

Conclusions:

• The developed MXene/CNT paper is a promising electrode material for high-performance flexible supercapacitors.
• The simple fabrication method offers a scalable approach for producing advanced energy storage materials.