| 학회 |
한국공업화학회 |
| 학술대회 |
2019년 봄 (05/01 ~ 05/03, 부산 벡스코(BEXCO)) |
| 권호 |
23권 1호 |
| 발표분야 |
전기화학_포스터 |
| 제목 |
Mesoporous, Hollow Microspheres as High Performance Cathodes for Lithium-Sulfur Batteries |
| 초록 |
Practical application of lithium-sulfur batteries is mainly limited by a low areal capacity around 2 mAh/cm2. In order to achieve a high-areal-capacity cathode, we prepare mesoporous, hollow microspheres with high pore volume. Triazine crystals of melamine and cyanuric acid (MCA) is utilized as structure directing agents, into which glucose is introduced as additional carbon source. Glucose trapped inside crystal structure of MCA is heated to 600 degrees Celsius under nitrogen atmosphere for carbonization. The resulting microspheres (2~6 μm), MCA-GL-20M-600, features nitrogen-rich microstructure and hollow porous structure with a pore volume of 2.3 cm3/g, a BET surface area of 367.54m2/g and a pore size of 35 nm. MCA-GL-20M-600 enables a high sulfur-loading cathode (~10 mg/cm2) and thereby exhibits an areal capacity of ~8.5 mAh/cm2 at C/5 over 100 cycles with minor capacity loss. |
| 저자 |
김미진, 강희주, 이태규, 구여진, 박혜진, 송지윤, 전영시
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| 소속 |
전남대 |
| 키워드 |
Lithium-Sulfur Batteries; High-Areal-Capacity Cathode; Mesoporous microspheres
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| E-Mail |
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