title: Oxygen-rich hierarchical porous carbon derived from artemia cyst shells with superior electrochemical performance.
abstract: In this study, three-dimensional (3D) hierarchical porous carbon with abundant functional groups is produced through a very simple low-cost carbonization of Artemia cyst shells. The unique hierarchical porous structure of this material, combining large numbers of micropores and macropores, as well as reasonable amount of mesopores, is proven favorable to capacitive behavior. The abundant oxygen functional groups from the natural carbon precursor contribute stable pseudocapacitance. As-prepared sample exhibits high specific capacitance (369 F g(-1) in 1 M H2SO4 and 349 F g(-1) in 6 M KOH), excellent cycling stability with capacitance retention of 100% over 10 000 cycles, and promising rate performance. This work not only describes a simple way to produce high-performance carbon electrode materials for practical application, but also inspires an idea for future structure design of porous carbon.
authors.affiliation: Key Laboratory of Applied Chemistry, Yanshan University , Qinhuangdao 066004, China.
authors.forename: Yufeng
authors.initials: Y
authors.lastname: Zhao
authors.forename: Wei
authors.initials: W
authors.lastname: Ran
authors.forename: Jing
authors.initials: J
authors.lastname: He
authors.forename: Yanfang
authors.initials: Y
authors.lastname: Song
authors.forename: Chunming
authors.initials: C
authors.lastname: Zhang
authors.forename: Ding-Bang
authors.initials: DB
authors.lastname: Xiong
authors.forename: Faming
authors.initials: F
authors.lastname: Gao
authors.forename: Jinsong
authors.initials: J
authors.lastname: Wu
authors.forename: Yongyao
authors.initials: Y
authors.lastname: Xia
keywords: carbon; hierarchical porous; natural carbon source; oxygen-rich; supercapacitor