Functional carbon nano materials: Transforming leaves into electrical energy storage devices

Leaves are turned into a functional carbon nano-material which is composed of carbon and doped with nitrogen. The material has significant namometre-level pores and is applied in electronics, environment and energy industries. This innovation also adds value to agricultural waste and ridding the leaves by burning.  For instance, the nano carbon material applied for ultra-capacitor polarity has a high energy density and extending the working range to 3.5 V, which is better the performance in the market.