Fabrication of flexible planar micro-supercapacitors using laser scribed graphene electrodes incorporated with MXene

Abstract

The surge in demand for personalized electronic products has fueled the emergence and development of flexible electronic technology, giving rise to flexible energy storage devices. An integral component in these devices is planar micro-supercapacitors (MSCs), which hold immense promise for compatibility with flexible electronic products, especially in terms of their miniaturization, flexibility, integration, and customization. In this study, a fast, efficient, and environmentally friendly laser scribing technique has been employed to pattern MXene and graphene oxide (MXene/GO) composite films to prepare shape-controllable MXene and laser scribed graphene (MXene/LSG) patterned electrodes on a flexible substrate, which were then constructed into flexible MSCs. Based on the synergistic effect of these two-dimensional materials, MXene and LSG, the resulting adaptable devices exhibit exceptional electrochemical performance, including high areal capacitance, long cycle stability, superior flexibility, and mechanical stability. Furthermore, the use of a laser scribing process has pivotal implications for the scalable production of patterned electrodes and modular integration.