그래핀 나노시트/ 엠진 복합재료 필름 플렉서블 슈퍼 커패시터의 제작

Abstract

In recent years, with the rapid development of emerging consumer electronics, it has been imperative to improve traditional energy storage devices to create light, small, flexible, long-life, and maintenance-free electronics. The supercapacitor, a new electrochemical energy storage device, has advantages for both the battery and capacitor and is an ideal candidate technology for small, light energy storage devices due to its features of high energy density, high power density, high charge-discharge efficiency, and long life, etc. Additionally, a supercapacitor with flexible, ultrathin, and ultra-light features has great use value and broad application prospects. In this paper, we explored flexible, ultrathin super-capacitor electrode materials in more depth. Recently, MXene has attracted considerable attention. As an electrode material for supercapacitors, it has many advantages, such as high conductivity, adjustable components, and controllable minimum thickness of the nanometer. Graphene is not only the thinnest material, but also the most robust; also, it has great flexibility and good surface hydrophobicity, which can be stretched by up to 20% of its own size. Graphene nanosheets/MXene composite films have common features with graphene and MXene. Here, we report flexible supercapacitors based on graphene nanosheets/MXene composite films prepared by a facile vacuum filtration method. The electrodes are expected to have good electrochemical properties due to the synergistic effect of graphene nanosheets and MXene. The composite film, which has a certain amount of flexibility, has the potential to become a new self-supporting electrode material and be applied in flexible devices. Due to the synergistic effect between layered materials and additives, the composite film is greatly improved in terms of electrochemical properties compared with those of single material composition. In this paper, we also discussed the application prospects of graphene nanosheets/MXene composite films in supercapacitors.