Cicada slough-derived heteroatom incorporated porous carbon for supercapacitor: Ultra-high gravimetric capacitance

By Haiyang Jia, Jiawei Sun, Xiao Xie, K. Yin, Litao Sun. Carbon, 2019

147 citations recorded by the source corpus.

Abstract Heteroatom incorporated porous carbon from cicada slough, has been synthesized through a simple activation process. The cicada slough-based porous carbon has high potency of naturally-derived heteroatom functionalities (∼12.06% atomic ratio of nitrogen, oxygen, sulfur, and phosphorus), well-developed microporosity and high specific surface area (1676 m2 g−1). Supercapacitor involves the as-obtained carbon as electrode material showing ultra-high specific capacitance of 355 F g−1 at the current density of 1 A g−1 and excellent rate capability of 284 F g−1 at 30 A g−1. The retention of specific capacitance of the working electrode remains over 90% after 3000 cycles at 10 A g−1. Single electrode in the symmetric-two-electrode test also delivers high specific capacitance of 274 F g−1 with the energy density up to ∼9.0 W h kg−1 in aqueous electrolyte. These outstanding results suggest the biomass derived porous carbon possessing the potential for the fabrication of high performance supercapacitors.

Subfields: Electrical and Electronic Engineering, Electronic, Optical and Magnetic Materials, Polymers and Plastics

View Paper: https://www.semanticscholar.org/paper/2408ac4dda56be139c171cddbe6bcbe6bc7806ee