3D meso-macroporous carbon derived spruce leaf biomass for excellent electrochemical symmetrical supercapacitor
Erman Taer, Sukmawati Sukmawati, Apriwandi Apriwandi, Rika Taslim
Abstract
In this study, an EDLC type supercapacitor device followed by extra pseudo-capacitance properties has been synthesized by using spruce leaf waste as 3D-porous carbon source. Consistently, we investigated the effect of chemically activating ZnCl2 at 0.1, 0.3, and 0.5 M on electrochemical and material properties. Through optimized porous carbon, their surface morphology is highly porous rich in 3D followed by high amorphousness. Furthermore, the 0.3 M ZnCl2 impregnated porous carbon elicited a faradaic redox reaction of self-doping heteroatoms that could increase the electrochemical capacitance. Through symmetric-system, the highest specific capacitance reaches 187 Fg−1 at 1 Ag−1 in 1 M H2SO4 electrolyte.