Fabrication of highly porous carbon as sulfur hosts using waste green tea bag powder for lithium–sulfur batteries

Seung Deok Seo, Changhoon Choi, Byung Kook Kim, Dong-Wan Kim

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

An activated carbon (AC) was synthesized via pyrolysis of waste green tea bag powder at 600 °C and subsequent activation of the carbonized powder by KOH at 800 °C. The AC powder exhibited an irregular particle size but a large specific surface area and pore volume of 2015 m2 g−1 and 0.727 cm3 g−1, respectively, which were significantly enhanced values compared with those of the original waste green tea bag powder. Furthermore, we tested the AC for use as a sulfur host for a lithium–sulfur battery cathode using cyclic voltammetry and galvanostatic charge/discharge cycling.

Original languageEnglish
Pages (from-to)2836-2841
Number of pages6
JournalCeramics International
Volume43
Issue number2
DOIs
Publication statusPublished - 2017 Feb 1

Keywords

  • A. Activated carbon
  • B. Alkali activation
  • C. Large surface area
  • D. Sulfur host
  • E. Waste green tea bag

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

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