Researchers use 3D graphene paper to create metal-free thin-film supercapacitors with 200 V output

Researchers from Guangdong University of Technology and Georgia Institute of Technology recently developed a method to achieve 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 seconds. The method could help power next-generation microelectronic devices, especially those used in harsh or space-constrained environments.