Eco-friendly micro-supercapacitors using fallen leaves: Green micro-supercapacitors on a single leaf could easily be applied in wearable electronics, smart houses, and IoTs

A research team has developed a graphene-inorganic-hybrid micro-supercapacitor made of leaves using femtosecond direct laser writing lithography. The advancement of wearable electronic devices is synonymous with innovations in flexible energy storage devices. Of the various energy storage devices, micro-supercapacitors have drawn a great deal of interest for their high electrical power density, long lifetimes, and short charging times.