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

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

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 seconds.