<p>The growing worldwide need for next-generation electrode materials for supercapacitor applications are growing rapidly. Two-dimensional (2D) systems originating from van der Waals (vdW) layered materials, such as graphene, are widely recognized for their excellent conductivity, large surface area, and stability. Meanwhile, non-van der Waals (nvdW) 2D counterparts, such as borophene, have recently gained momentum due to their polymorphic nature, structural anisotropy, and outstanding electrical performance. This paper demonstrates the development of electrodes constructed from a borophene–graphene hybrid architecture, strategically designed to integrate graphene’s extensive surface accessibility with borophene’s remarkable electrical conductivity. The fabricated electrodes exhibit a specific capacitance of 597 F·g⁻¹ at 1 A·g⁻¹, with capacitance retention of 81.20% at 24000 cycles and an energy density of 10.17 Wh·kg⁻¹ and power density 175.18 W.kg⁻¹. The originality of the proposed work lies in the integration of vdW and nvdW 2D materials into a hybrid system, which constructively tackles the constraints of conventional carbon-based electrodes. These findings establish borophene–graphene hybrids as promising candidates for next-generation supercapacitors and provide new perspectives for the rational design of flexible, scalable energy storage devices.</p>