| 학회 | 한국공업화학회 |
| 학술대회 | 2017년 가을 (11/08 ~ 11/10, 부산 벡스코(BEXCO)) |
| 권호 | 21권 2호 |
| 발표분야 | 촉매_포스터 |
| 제목 | A study on lithium storage mechanism of ordered mesoporous MoS2 via synchrotron-based X-ray analysis |
| 초록 | MoS2 has superior electrochemical properties suit for lithium ion battery, such as high theoretical capacity (670 mAh/g), low volume expansion during cycle (~103%) and the week vdw forces between layers, which offers facile route for Li+. The lithium storage mechanism of MoS2 is widely known as an irreversible intercalation reaction in the first cycle and reversible conversion reactions (MoS2 + 4Li+ + 4e- ↔ Mo + 2Li2S). However, some recent studies contradict above mentioned pathway and suggest different reversible reaction path (Li2S ↔ 2Li+ + S2-), similar to the Li-S battery reaction. In order to clarify the reaction process, we synthesized ordered mesoporous MoS2 as a model structure to ascertain the complete reaction by obtaining the maximum reversible capacity from this material. We also utilized synchrotron radiation based characterization techniques to directly observe local and bulk structural changes in the well-synthesized mesoporous MoS2 during the electrochemical cycling. |
| 저자 | 최윤석, 이규성, 김지만 |
| 소속 | 성균관대 |
| 키워드 | mesoporous; lithium ion battery; molybdenum disulfide |
