| 학회 | 한국화학공학회 |
| 학술대회 | 2020년 가을 (10/14 ~ 10/16, e-컨퍼런스) |
| 권호 | 26권 1호, p.656 |
| 발표분야 | 재료 |
| 제목 | Stabilization of High-Voltage Cathode-Electrolyte Interface for Stable Battery Performance |
| 초록 | Nickel-rich three-components layered oxides as known as Li(Nix-yCoxMny)O2(NCM, 1-x-y>0.5) are the rising cathode active materials for high-energy density Li-ion batteries. LiNi0.8Co0.1Mn0.1O2 shows a high reversible capacity because of high nickel portion. The reversible capacity can be increased more by elevating the charge cut-off voltage above conventional voltage, 4.2V. However, its high-voltage performance is limited due to the anodic instability of conventional electrolyte and cathode-electrolyte interface, and the structural degradation under high-voltages. Interface stabilization by using a small fraction of functional electrolyte additive as a high-voltage stabilizer is a cost effective approach to improve high-voltage stability and cycling performance. We present improved cycling performance and the correlation between performance, surface and structural stability. AcknowledgementsThis work was supported by Hyundai Motor Company and Creative Human Resource Development Consortium for Fusion Technology of Functional Chemical/Bio Materials of BK Plus program by the Ministry of Education of Korea. |
| 저자 | 곽세현, 정경준, 송승완 |
| 소속 | 충남대 |
| 키워드 | 화공재료 |
| 원문파일 | 초록 보기 |
