Flexible Boron-Doped Laser-Induced Graphene Microsupercapacitors

Area of Science:

• Materials Science
• Electrochemistry
• Energy Storage

Background:

• Heteroatom-doped graphene is crucial for energy storage device electrodes.
• Developing efficient doping methods for graphene is an ongoing research area.

Purpose of the Study:

• To develop a facile method for preparing boron-doped porous graphene.
• To fabricate and evaluate flexible microsupercapacitors using this material.

Main Methods:

• Laser induction process using boric acid-containing polyimide sheets in ambient air.
• Fabrication of patterned active electrodes for microsupercapacitors.

Main Results:

• Achieved boron-doped porous graphene via a simple laser induction method.
• Boron doping increased areal capacitance by 3x compared to undoped graphene.
• Energy density increased 5-10x across various power densities.
• Demonstrated excellent cyclability and mechanical flexibility in the microsupercapacitors.

Conclusions:

• Boron-doped laser-induced graphene is a promising material for high-performance flexible microsupercapacitors.
• The facile ambient air preparation method is suitable for scalable microelectronics fabrication.
• The enhanced electrochemical performance highlights the potential of doped graphene in advanced energy storage.