Unprecedented expansion of graphite with low power laser for high-quality liquid phase exfoliated graphene.

ABSTRACT: As graphene and related materials increasingly integrate into various industries, producing high-quality graphene sheets on a large scale becomes crucial. Here, we present a unique approach to the large-scale production of graphene through laser-assisted graphite expansion followed by ultrasonic exfoliation. The present method utilizes laser technology to significantly expand graphite, achieving an expansion rate of 800 mL g^-1 with a deficient energy consumption of just two watts laser. The graphene produced via ultrasonication of expanded graphite samples exhibited high quality (I_D/I_G) ~ 0.13 and a few layers with a (I_2D/I_G) ~ 0.52. Free-standing films with different thicknesses (11-69 µm) were successfully prepared through filtration

SUBMITTER: Elkaffas R 

PROVIDER: S-EPMC12460847 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature