Three-dimensional porous activated carbon derived from loofah sponge biomass for supercapacitor applications

Xiao Li Su, Jing Ran Chen, Guangping Zheng, Jing He Yang, Xin Xin Guan, Pu Liu, Xiu Cheng Zheng

Research output: Journal article publicationJournal articleAcademic researchpeer-review

123 Citations (Scopus)

Abstract

Biomass carbon source is generally cheap, environmentally friendly and readily available in high quality and quantity. In this work, a series of loofah sponge-derived activated carbon (SAC-x) with hierarchical porous structures are prepared by KOH chemical activation and used as electrode materials for supercapacitors. The pore size can be easily controllable by changing the dosage of KOH. The optimized material (SAC-4) exhibits a high specific capacitance of 309.6 F g−1at 1 A g−1in the three-electrode system using 6 M KOH electrolyte. More importantly, the as-assembled symmetric supercapacitor based on SAC-4 exhibits a high energy density of 16.1 Wh kg−1at a power density of 160.0 W kg−1using 1 M Na2SO4electrolyte. These remarkable results demonstrate the exciting commercial potential of SAC-x for high-performance supercapacitor applications due to their high specific surface area, appropriately porous structure, and the trace heteroatom (O and N) functionalities.
Original languageEnglish
Pages (from-to)327-336
Number of pages10
JournalApplied Surface Science
Volume436
DOIs
Publication statusPublished - 1 Apr 2018

Keywords

  • Activated carbon tube
  • Electrochemical behaviors
  • Hierarchical porous structure
  • Loofah sponge
  • Supercapacitors

ASJC Scopus subject areas

  • Surfaces, Coatings and Films

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