Giant-miscanthus-derived activated carbon and its application to lithium sulfur batteries

Geon Hae Lim; Ji Su Chae; Young Lok Cha; Yun Chan Kang; Kwang Chul Roh

doi:10.1007/s42823-019-00117-w

Giant-miscanthus-derived activated carbon and its application to lithium sulfur batteries

Geon Hae Lim, Ji Su Chae, Young Lok Cha, Yun Chan Kang, Kwang Chul Roh

Department of Materials Science and Engineering

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

10 Citations (Scopus)

Abstract

Giant miscanthus (GM) is an Asian grass that can produce biomass in high yields per land area. It can be used as a cathode material in lithium sulfur (Li/S) batteries. Giant-miscanthus-derived activated carbon (GMAC) is prepared via carbonization of GM followed by KOH activation. It is prepared with a large amount of KOH, and thus contained more defects but had a highly porous structure and graphitic cluster lattice. GMAC has a large specific surface area of 3327 m²/g and a large total pore volume of 1.86 cm³/g. The pore volume served as a storage space for the retention of polysulfides, thereby inhibiting the shuttle effect. When a GMAC–sulfur composite cathode is tested in a Li/S battery, an initial discharge capacity of 1148 mAh/g can be attained at 0.1 C. In a cyclic charge–discharge experiment at 1 C, discharge capacities of 529 mAh/g and 248 mAh/g are observed in the first and 200th cycles, respectively.

Original language	English
Pages (from-to)	477-484
Number of pages	8
Journal	Carbon Letters
Volume	30
Issue number	5
DOIs	https://doi.org/10.1007/s42823-019-00117-w
Publication status	Published - 2020 Oct 1

Bibliographical note

Funding Information:
This work was carried out with the support of “Cooperative Research Program for Agriculture Science and Technology Development (Project No. PJ01382902)” Rural Development Administration, Republic of Korea.

Funding Information:
This work was carried out with the support of “Cooperative Research Program for Agriculture Science and Technology Development (Project No. PJ01382902)” Rural Development Administration, Republic of Korea.

Publisher Copyright:
© 2019, Korean Carbon Society.

Keywords

Activated carbon
Biomass
Giant miscanthus
Lithium sulfur batteries

ASJC Scopus subject areas

Ceramics and Composites
Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Process Chemistry and Technology
Organic Chemistry
Inorganic Chemistry
Materials Chemistry

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1007/s42823-019-00117-w

Cite this

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title = "Giant-miscanthus-derived activated carbon and its application to lithium sulfur batteries",

abstract = "Giant miscanthus (GM) is an Asian grass that can produce biomass in high yields per land area. It can be used as a cathode material in lithium sulfur (Li/S) batteries. Giant-miscanthus-derived activated carbon (GMAC) is prepared via carbonization of GM followed by KOH activation. It is prepared with a large amount of KOH, and thus contained more defects but had a highly porous structure and graphitic cluster lattice. GMAC has a large specific surface area of 3327 m2/g and a large total pore volume of 1.86 cm3/g. The pore volume served as a storage space for the retention of polysulfides, thereby inhibiting the shuttle effect. When a GMAC–sulfur composite cathode is tested in a Li/S battery, an initial discharge capacity of 1148 mAh/g can be attained at 0.1 C. In a cyclic charge–discharge experiment at 1 C, discharge capacities of 529 mAh/g and 248 mAh/g are observed in the first and 200th cycles, respectively.",

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author = "Lim, {Geon Hae} and Chae, {Ji Su} and Cha, {Young Lok} and Kang, {Yun Chan} and Roh, {Kwang Chul}",

note = "Funding Information: This work was carried out with the support of “Cooperative Research Program for Agriculture Science and Technology Development (Project No. PJ01382902)” Rural Development Administration, Republic of Korea. Funding Information: This work was carried out with the support of “Cooperative Research Program for Agriculture Science and Technology Development (Project No. PJ01382902)” Rural Development Administration, Republic of Korea. Publisher Copyright: {\textcopyright} 2019, Korean Carbon Society.",

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AU - Kang, Yun Chan

AU - Roh, Kwang Chul

N1 - Funding Information: This work was carried out with the support of “Cooperative Research Program for Agriculture Science and Technology Development (Project No. PJ01382902)” Rural Development Administration, Republic of Korea. Funding Information: This work was carried out with the support of “Cooperative Research Program for Agriculture Science and Technology Development (Project No. PJ01382902)” Rural Development Administration, Republic of Korea. Publisher Copyright: © 2019, Korean Carbon Society.

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N2 - Giant miscanthus (GM) is an Asian grass that can produce biomass in high yields per land area. It can be used as a cathode material in lithium sulfur (Li/S) batteries. Giant-miscanthus-derived activated carbon (GMAC) is prepared via carbonization of GM followed by KOH activation. It is prepared with a large amount of KOH, and thus contained more defects but had a highly porous structure and graphitic cluster lattice. GMAC has a large specific surface area of 3327 m2/g and a large total pore volume of 1.86 cm3/g. The pore volume served as a storage space for the retention of polysulfides, thereby inhibiting the shuttle effect. When a GMAC–sulfur composite cathode is tested in a Li/S battery, an initial discharge capacity of 1148 mAh/g can be attained at 0.1 C. In a cyclic charge–discharge experiment at 1 C, discharge capacities of 529 mAh/g and 248 mAh/g are observed in the first and 200th cycles, respectively.

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KW - Lithium sulfur batteries

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Giant-miscanthus-derived activated carbon and its application to lithium sulfur batteries

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

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