| 학회 |
한국공업화학회 |
| 학술대회 |
2019년 봄 (05/01 ~ 05/03, 부산 벡스코(BEXCO)) |
| 권호 |
23권 1호 |
| 발표분야 |
전기화학_포스터 |
| 제목 |
High-performance 2D Siloxene-based Cathode for Lithium-Sulfur Batteries and Its Mechanism Characterization |
| 초록 |
Lithium-Sulfur Batteries (LSBs) are considered one of the most promising battery technologies for electric vehicles and energy storage systems. Herein, we propose siloxene-based additive materials for LSBs. Reactive extraction technique using HCl was used in order to drive their two-dimensional (2D) layered structures (2D Siloxene) from CaSi2. Being utilized as cathode-additive materials, 2D Siloxene was able to physically absorb lithium-polysulfides using abundant hydroxyl surface functional groups and increase the tortuosity of the cathode, preventing lithium-polysulfides dissolution. These two effects were thoroughly unveiled by XRD, XPS, and EM. LSBs employing 2D Siloxene (4 mg/cm2) achieved a high areal capacity of ~7 mAh/cm2 with a 10 mg/cm2 sulfur loading corresponding to 43% sulfur-utilization efficiency after 120 cycle at 0.1 C. |
| 저자 |
강희주, 김미진, 이태규, 구여진, 박혜진, 전영시
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| 소속 |
전남대 |
| 키워드 |
Lithium-Sulfur Batteries; High-utilization Efficiency; High-areal Capacity; Functionalized-surface; Physisorption
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| E-Mail |
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