| 학회 |
한국화학공학회 |
| 학술대회 |
2015년 봄 (04/22 ~ 04/24, 제주 ICC) |
| 권호 |
21권 1호, p.510 |
| 발표분야 |
에너지 |
| 제목 |
Improved Cycling Performance and Surface Chemistry Studies of 4.8 V Li-rich Layered Oxide Cathode Using Fluorinated Linear Carbonate as a High-Voltage Additive |
| 초록 |
Li-rich layered oxide of xLi2MnO3.(1−x)Li(Mn,Ni,Co)O2 is one of the most promising cathode materials for high-energy density Li-ion batteries due to their high discharge capacities of ≥ 250 mAhg−1 on the operation above 4.6 V vs. Li/Li+. Its cycling performance, however, has been limited at high-voltage operation (＞ 4.3 V), due to anodic instability of conventional electrolyte and interfacial instability of the cathode. Here we report significantly improved cycling performance of 4.8 V half-cell and full-cell with Li1.2Mn0.525Ni0.175Co0.1O2 cathode and fluorinated linear carbonate as a novel high-voltage electrolyte additive. Interfacial reaction (SEI formation) mechanism, the SEI composition and stability, and their relations to high-voltage cycling performance would be discussed. |
| 저자 |
HIEU QUANG PHAM1, Eui-Hyung Hwang2, Young-Gil Kwon3, Hyun Min Jung4, 송승완3
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| 소속 |
1Department of Fine Chemical Engineering & Applied Chemistry, 2Chungnam National Univ., 3Leechem Co., 4Ltd. |
| 키워드 |
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| E-Mail |
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| 원문파일 |
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