ABSTRACT
The rapid popularization of portable electronic devices has urgently required on-chip energy storage devices to develop in the direction of miniaturization, high performance, and high integration. Two-dimensional (2D) materials received extensive attention in recent years because of their various advantageous properties, such as good flexibility, chemical stability, and excellent conductivity and thermal conductivity. In recent years, tuning of bandgap and electronic properties has suggested new opportunities to achieve high-performance micro-energy devices. In this chapter, first outline the current methods for regulating the energy band and electronic properties of 2D materials (Graphene, TMDC, and MXenes), and explain their characteristics, mechanism, and advantages in detail. Subsequently, the progresses of these materials in energy conversion and storage devices such as supercapacitors, lithium-ion batteries, sodium-ion batteries, and potassium-ion batteries were introduced and discussed in depth. In addition, this chapter also introduces perspectives related to the challenges and opportunities in this promising field of research.
