The development of sustainable energy applications has become crucial due to the rising energy demand and urgent environmental concerns. This led to the development of energy storage solutions suitable for electric vehicles and renewable energy resources. Graphene, a two-dimensional carbon material, has attracted attention within the scientific community due to its superior electronic, thermal, mechanical, and optical properties. This led to the successful incorporation of graphene in various energy technologies. Numerous methods to synthesize graphene have been used; however, scalability of these methods, without sacrificing the quality control, remain challenging. The presented work aims to synthesize graphenic materials using top-down approaches in environmentally-friendly and economically-scalable methods. The use of Taylor-Couette reactor setups has been investigated to synthesize graphenic materials. The Taylor-Couette reactor consists of two coaxial cylinders where the fluid is inserted into the gap in-between the cylinders. The rotation of the cylinders creates numerous flow structures and varying shear rates that have proven to be advantageous for graphene synthesis. We first demonstrate how imposing an axial flow in a Taylor-Couette reactor with a rotating inner cylinder and still outer cylinder could transform the graphene oxide synthesis from a batch process into a continuous one. This results in effective oxidation of the graphite precursor and a structurally-uniform graphene oxide product with large lateral dimensions. Secondly, rotating the outer cylinder while the inner cylinder is still in the Taylor-Couette reactor has been utilized to induce high shearing of graphite particles in an aqueous system, resulting in effective expansion and exfoliation levels on the graphene structure without creating structural defects. Finally, incorporating metal precursors into the aqueous exfoliation process in outer-rotating Taylor-Couette reactor results in in-situ deposition of the metal nanoparticles on the exfoliated graphene sheets. This produces graphene/metal hybrids that are suitable for a variety of energy and composite applications.