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Fabrication of highly porous carbon as sulfur hosts using waste green tea bag powder for lithium-sulfur batteries
- Issue Date
- 1-2월-2017
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Activated carbon; Alkali activation; Large surface area; Sulfur host; Waste green tea bag
- Citation
- CERAMICS INTERNATIONAL, v.43, no.2, pp.2836 - 2841
- Indexed
- SCIE
SCOPUS
- Journal Title
- CERAMICS INTERNATIONAL
- Volume
- 43
- Number
- 2
- Start Page
- 2836
- End Page
- 2841
- ISSN
- 0272-8842
- Abstract
- An activated carbon (AC) was synthesized via pyrolysis of waste green tea bag powder at 600 degrees C and subsequent activation of the carbonized powder by KOH at 800 degrees C. The AC powder exhibited an irregular particle size but a large specific surface area and pore volume of 2015 m(2) g(-1) and 0.727 cm(3) 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.
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