| 학회 |
한국고분자학회 |
| 학술대회 |
2012년 가을 (10/11 ~ 10/12, 창원컨벤션센터) |
| 권호 |
37권 2호 |
| 발표분야 |
고분자가공/복합재료 |
| 제목 |
Hemi-cylindrical mesoporous silica-graphene composite |
| 초록 |
We suggest the synthesis of mesoporous graphene-silica composite as a supporting material of sulfur for Lithium-Sulfur batteries. The ordered porous structure of silica was synthesized parallel to functionalized graphene sheets via ternary cooperative assembly among graphene, silica precursor, and a block copolymer. Well-defined, unique mesoporous structure consisted of half conductive carbon and half insulating silica features both good polysulfides retention ability and high rate capability in Li-S battery resulting from electronic conductivity of graphene and dual functions of silica as structure building block and in-situ polysulfide ab-/ad-sorbing agent. We expect that a) the well-defined mesoporous silica structure exhibits high polysulfide retention and allows for fast reaction kinetics of sulfur, b) the graphene alleviates the insulating nature of silica and sulfur and c) the synthesis of m-GS is conducted under mild conditions. |
| 저자 |
김경환1, 전영시2, Galen D. Stucky3, 정희태2
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| 소속 |
1KAIST, 2Univ. of California, 3Santa Barbara |
| 키워드 |
: lithium-sulfur batteries; cathode materials; polysulfide retention; cooperative assembly; graphene; mesoporous silica
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| E-Mail |
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