Biocompatible Parylene-C Laser-Induced Graphene Electrodes for Microsupercapacitor Applications

Area of Science:

• Materials Science
• Nanotechnology
• Electrochemistry

Background:

• Laser irradiation offers a fast, cost-effective route to porous graphene films.
• Graphene-based materials are crucial for advanced electronic and energy-storage devices.

Purpose of the Study:

• To systematically study laser-induced graphene (LIG) formation on parylene-C membranes.
• To fabricate and characterize ultrathin, solid-state microsupercapacitors (MSCs) using parylene-C LIG electrodes.

Main Methods:

• Utilized a CO2 infrared laser for graphene formation on parylene-C.
• Characterized the resulting graphene using Raman spectroscopy.
• Fabricated microsupercapacitors as a proof-of-concept application.

Main Results:

• Achieved low sheet resistance (9.4 Ω/sq) for laser-induced graphene on parylene-C.
• Raman analysis confirmed multilayered graphenic material formation.
• Demonstrated good electrochemical performance in LIG-MSC devices with 1.66 mF/cm² capacitance and 96% stability after 10,000 cycles.

Conclusions:

• Parylene-C is a viable precursor for scalable, cost-effective LIG fabrication.
• LIG-based MSCs show potential for flexible, wearable, and biocompatible electronic applications.
• This research expands knowledge of LIG processes and precursor materials.