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

doi:10.1016/j.ceramint.2016.10.158

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

School of Civil, Environmental and Architectural Engineering

Research output: Contribution to journal › Article › peer-review

14 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 language	English
Pages (from-to)	2836-2841
Number of pages	6
Journal	Ceramics International
Volume	43
Issue number	2
DOIs	https://doi.org/10.1016/j.ceramint.2016.10.158
Publication status	Published - 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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10.1016/j.ceramint.2016.10.158

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

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.",

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AU - Seo, Seung Deok

AU - Choi, Changhoon

AU - Kim, Byung Kook

AU - Kim, Dong-Wan

PY - 2017/2/1

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N2 - 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.

AB - 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.

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KW - B. Alkali activation

KW - C. Large surface area

KW - D. Sulfur host

KW - E. Waste green tea bag

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

Abstract

Keywords

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