Metal-free supercapacitor stack delivers 200 volts from just 3.8 cm³

metal free supercapaci


Metal-free supercapacitor stack delivers 200 volts from just 3.8 cm³
High-quality laser-pyrolyzed 3D graphene papers were achieved through reaction molecular dynamics simulation and process parameter optimization. By employing stacking integration technique of tandem supercapacitors, metal-/separator-free 3D graphene papers-based tandem thin-film supercapacitors (TFSCs) with a compact structure (3.8 cm³), a voltage of up to 200 V, and high performance can be fabricated. Credit: International Journal of Extreme Manufacturing (2025). DOI: 10.1088/2631-7990/add227

Researchers at Guangdong University of Technology have developed a new method to build powerful, compact energy storage devices—called thin-film supercapacitors (TFSCs)—without using metal parts or traditional separators. Their tiny 3.8 cm³ device is even capable of outputting 200 volts—enough to light 100 LEDs for 30 seconds or a 3-watt bulb for 7…



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