| 세션명 | 대학원생 구두발표 (II) |
|---|---|
| 발표장 | 제11-1회장 |
| 논문코드 | O11-5 |
| 발표일 | 2024-04-3 |
| 발표시간 | 14:00-14:15 |
| 논문제목 | Computational Study on Design of Electrolytes and Additives for High Voltage LiCoO2 Lithium-ion Battery |
| 발표자 | 이동규 |
| 발표자 소속 | 경상국립대학교 |
| 저자 | 이동규, 손준수, 이태경† |
| 소속 | 경상국립대학교 |
| 논문초록 | High-energy-density lithium-ion batteries employing high voltage LiCoO2 encounter challenges regarding diminished reversibility and structural issues from uncontrolled electrolyte decomposition at elevated voltage. Ensuring oxidation stability in the electrolyte is imperative for optimal high voltage operation, necessitating a low gas generation solvent within the LiCoO2. PF6 and PF5 molecules can also yield undesirable compounds like HF, occurring interfacial layer degradation. In this study, effective electrolytes and additives were introduced. By using density functional theory calculations, it was confirmed that ethyl butyrate electrolyte successfully suppressed gas generation. Moreover, 1,3,6-hexanetricarbonitrile additive stabilized the PF5 molecule, and tris(trimethylsilyl) phosphite additive efficiently scavenged the HF molecule. Our study demonstrates the enhanced performance, providing valuable insights for future high-energy-density lithium-ion battery advancements. |
THE POLYMER SOCIETY OF KOREA