| 학회 |
한국화학공학회 |
| 학술대회 |
2016년 가을 (10/19 ~ 10/21, 대전컨벤션센터) |
| 권호 |
22권 2호, p.1944 |
| 발표분야 |
에너지 |
| 제목 |
Enhanced Electrochemical Performance of Nickel-rich Layered Oxide Battery Cathode via Surface Stabilization |
| 초록 |
Nickel-rich three-components oxides of Li(Ni1-x-yCoxMny)O2 (NCM, 1-x-y ≥ 0.5) are one of the promising cathode active materials of high-energy density Li-ion batteries because of higher capacity, operation to higher charge cut-off voltage, lower cost and less toxicity than LiCoO2. However, their high-voltage performance is difficult to achieve due to limited anodic stability of conventional electrolyte above 4.2 V vs. Li/Li+. At such an aggressive charge condition, cathode-electrolyte interfacial reactions often cause a degradation of cathode material and electrolyte consumption by oxidative decomposition, resulting in a rapid performance fade. Here we report the surface stabilization of Nickel-rich LiNi0.6Co0.2Mn0.2O2 cathode to the charge cut-off voltage of 4.6 V by electrolyte control. Surface chemistry and its relation to cycling performance would be discussed. |
| 저자 |
김재희1, PHAM QUANG HIEU2, 황의형1, 권영길2, 이정규3, 송승완4
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| 소속 |
1Dept. of Chemical Engineering & Applied Chemistry, 2Chungnam National Univ., 3Leechem Co., 4Ltd |
| 키워드 |
에너지 저장 |
| E-Mail |
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| 원문파일 |
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