(165q) 2D Mxene and Their Composites: Synthesis and Rheological Properties

The development of portable and wearable electronic devices puts forward higher requirements for energy storage materials with high flexibility, high volumetric capacity and low cost. Recently, two-dimensional (2D) transition metal carbides/nitrides (MXenes) have been receiving a significant research for a range of applications due to their unique physical and chemical properties. Their excellent electrochemical properties, high electrical conductivity, and superior mechanical properties make them a promising candidate material for energy storage devices. However, similar to other 2D materials, the application of MXenes in flexible and wearable energy storage devices (e.g., batteries and supercapacitors) is dependent on their assembly into 3D structures with high electrical and ionic conductivities. The first step in 3D printing is the formulation of printable colloidal inks with rheological properties suitable for extrusion-based 3D printing. Herein, we will show the development and progress of our work in synthesis of MXene and processing of MXene-based composites focusing on their rheological properties using different rheology methodologies combining shear, extensional and oscillatory rheology that enabled us quantifying the printability of MXene-based materials. Our results can provide valuable insight to progress use of MXene in the fields of 3D printed energy storage devices, such as batteries and supercapacitors.