title: Preparation of capacitor's electrode from sunflower seed shell.
abstract: Series of nanoporous carbons are prepared from sunflower seed shell (SSS) by two different strategies and used as electrode material for electrochemical double-layer capacitor (EDLC). The surface area and pore-structure of the nanoporous carbons are characterized intensively using N2 adsorption technique. The results show that the pore-structure of the carbons is closely related to activation temperature and dosage of KOH. Electrochemical measurements show that the carbons made by impregnation-activation process have better capacitive behavior and higher capacitance retention ratio at high drain current than the carbons made by carbonization-activation process, which is due to that there are abundant macroscopic pores and less interior micropore surface in the texture of the former. More importantly, the capacitive performances of these carbons are much better than ordered mesoporous carbons and commercial wood-based active carbon, thus highlighting the success of preparing high performance electrode material for EDLC from SSS.
authors.affiliation: School of Chemical Engineering, Shandong University of Technology, Zibo 255049, China.
authors.forename: Xiao
authors.initials: X
authors.lastname: Li
authors.forename: Wei
authors.initials: W
authors.lastname: Xing
authors.forename: Shuping
authors.initials: S
authors.lastname: Zhuo
authors.forename: Jin
authors.initials: J
authors.lastname: Zhou
authors.forename: Feng
authors.initials: F
authors.lastname: Li
authors.forename: Shi-Zhang
authors.initials: SZ
authors.lastname: Qiao
authors.forename: Gao-Qing
authors.initials: GQ
authors.lastname: Lu
mesh_terms: D018533:Biomass; D001709:Biotechnology / Q000379:methods*; D002244:Carbon / Q000032:analysis; D004560:Electricity; D055664:Electrochemical Techniques / Q000295:instrumentation*; D004566:Electrodes; D006368:Helianthus / Q000737:chemistry*; D058608:Nanopores; D016062:Porosity; D012639:Seeds / Q000737:chemistry*; D013499:Surface Properties
chemical_list: D002244:Carbon