| 학회 |
한국공업화학회 |
| 학술대회 |
2016년 가을 (10/26 ~ 10/28, 제주국제컨벤션센터(ICCJEJU)) |
| 권호 |
20권 2호 |
| 발표분야 |
에너지저장변환_포스터 |
| 제목 |
Improving High-Voltage Stability of Nickel-Rich Layered Oxide Battery Cathode using Functional Additive |
| 초록 |
Three-components cathode active materials of Li(Ni1-x-yCoxMny)O2 (NCM) are promising for high-energy density Li-ion batteries, and their capacity can increase by increasing the Ni content and the charge cut-off voltage (＞4.2 V). However, their high voltage performance is difficult to achieve because of anodic decomposition of conventional electrolyte above 4.2 V vs. Li/Li+. At the high charge voltage condition, anodic instability of electrolyte and cathode-electrolyte interfacial reactions can result in a degradation of cathode material, leading to a rapid performance capacity fade. In order to overcome these issues, we have been searching for high-voltage electrolyte additives. Here we report a new electrolyte additive for charging the LiNi0.6Co0.2Mn0.2O2 cathode to 4.6 V. Studies of surface film formation would be discussed. |
| 저자 |
김재희1, PHAM QUANG HIEU1, 황의형2, 권영길3, 이정규, 송승완2
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| 소속 |
1Chungnam National Univ., 2Leechem Co., 3Ltd. |
| 키워드 |
High voltage; LIB; SEI layer
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| E-Mail |
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