fig2
![Two-dimensional (2D) materials for 3D printed micro-supercapacitors and micro-batteries](https://image.oaes.cc/a48a7473-ffb1-459a-bb46-8859fb8dff51/em4081.fig.2.jpg)
Figure 2. Schematic illustration of working principles and key characteristics of the prominent 3D printing processes for development of supercapacitors and batteries: (A-D) direct ink writing, fused deposition modeling, inkjet printing, and (D) stereolithography, respectively[60].