Recent Progress in 3D Printing of 2D Material-Based Macrostructures

2D materials have a range of unique properties and are promising building blocks for the fabrication of macroscopic materials for many applications ranging from flexible electronics to energy storage devices. The development of effective methods to fabricate 2D material-based macroscopic materials with designed structures is the key to enabling high performance. Lately, 3D printing has emerged as a new technique to assemble such materials. Compared to conventional fabrication methods, 3D printing techniques have a high degree of customization of the structure with a broad range of domain sizes from nanometers to centimeters, and thereby give the resulting products additional structure-related functionalities. Recent advances in the fabrication of 2D material-based macrostructures using 3D printing techniques and their uses in different fields are reviewed. Challenges and opportunities for the future development of the topic are also discussed.