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학술지 3-Chloroanisole for Overcharge Protection of a Li-Ion Cell
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저자
이영기, 조재필
발행일
200709
출처
Electrochimica Acta, v.52 no.25, pp.7404-7408
ISSN
0013-4686
출판사
Elsevier
DOI
https://dx.doi.org/10.1016/j.electacta.2007.06.032
협약과제
07MB2600, 유비쿼터스 단말용 부품 모듈, 김종대
초록
We observed that 3-chloroanisole (3CA), as an electrolyte additive was very effective for overcharging protection during a 12 V overcharging reaction. During overcharging, the cell voltage did not increase beyond 5.3 V, as opposed to other aromatic compounds that showed a voltage shoot-up to 12 V. This behavior was due to the 3CA decomposition and the formation of conducting polymer film within separator and at cathode/electrolyte interface, which consumes the surplus current and inhibit the voltage increase through the shunting effect. In addition, the use of 3CA did not lead to any problems with rate capability, cycle life, and long-term storage behavior at 50 and 70 °C. Furthermore, during storage at 90 °C for 4 and 24 h, electrolyte with 3CA in a Li-ion cell showed a similar increase of cell thickness as a cell without 3CA. © 2007 Elsevier Ltd. All rights reserved.
키워드
3-Chloroanisole, Electrolyte additive, Li-ion cell, Overcharge protection
KSP 제안 키워드
3 V, Aromatic compounds, Cathode/electrolyte interface, Conducting polymer film, Li-ion cell, Long-term storage, Overcharge protection, Rate Capability, Storage behavior, Voltage increase, cell voltage