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. (Graph Presented).
Original language | English (US) |
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Pages (from-to) | 1132-1139 |
Number of pages | 8 |
Journal | ACS Applied Materials and Interfaces |
Volume | 7 |
Issue number | 2 |
DOIs | |
State | Published - Jan 21 2015 |
Keywords
- Carbon
- Hierarchical porous
- Natural carbon source
- Oxygen-rich
- Supercapacitor
ASJC Scopus subject areas
- General Materials Science