Recent advances in 2D MXene and solid state electrolyte for energy storage applications: Comprehensive review

Environmental problems are raising, and demand for greater energy capacity is driving the investigation of reliable and efficient energy sources. As most energy sources are intermittent, there is a need for highly efficient energy storage technologies, such as supercapacitors (SCs), which can store significant amounts of energy. MXenes, a class of 2D transitional metallic carbides, nitrides, or carbonitrides, show great potential for energy storage in SCs due to their remarkable properties, including excellent voltage conductivity, large surface area, and outstanding mechanical strength. MXenes are widely used in SCs, batteries, and other energy storage devices because of their strong ability electrical conductivity and capacitive properties. Their large surface area, which enhances the interaction between electrodes and electrolytes, which is crucial for SCs because it allows more ions to be stored on the surface of the material. Therefore, MXenes are ideal for SC electrodes. This chapter covers strategies for the fabrication, activity development, and scalable production of industry-relevant MXene films. The structure of MXene, along with the impact of various factors on the electrochemical functionality and energy storage capabilities of MXene-based SCs, including the size and shape of MXene sheets, electrode architecture, electrolyte characteristics, is examined. In summary, this chapter highlights recent advancements in MXene synthesis, fundamental properties, and material composites, with a particular focus on the unique electrochemical efficiency of MXene-based electrodes and devices. It also addresses the challenges and advantages MXenes encounter in the rapidly evolving field of energy storage.