| 학회 |
한국공업화학회 |
| 학술대회 |
2013년 가을 (10/30 ~ 11/01, 대전컨벤션센터) |
| 권호 |
17권 2호 |
| 발표분야 |
포스터-전기화학 |
| 제목 |
Novel Acyclic Ammonium-based Ionic Liquids with Ether Substituents as Electrolytes for Lithium Ion Batteries |
| 초록 |
Lithium ion batteries (LIB) with conventional carbonate electrolytes are flammable due to the relatively low thermal stability of the carbonate electrolytes. The conventional carbonate electrolytes may be replaced by nonvolatile and nonflammable ionic liquids to increase the thermal stability of LIB. Ionic liquids are salts that exist as liquid state at room temperature although they are composed of ionic species, cations and anions. Owing to the ionic bonding, they have unique properties such as high ionic conductivity, non-volatility, and non-flammability as well as a wide liquid range and wide electrochemical stability window. In this work, several new acyclic ammonium-based ionic liquids with or without an N,O-acetal substituent were synthesized and their physicochemical and electrochemical properties were characterized. Among them, less bulky ammonium cations having a methoxymethyl group showed better cycle performance at various C-rates. |
| 저자 |
김형태, 강재식, 김대수, 임태은, 문준영, 오승모, 김영규
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| 소속 |
서울대 |
| 키워드 |
ionic liquids; electrolytes; lithium secondary batteries; Ammonium cation.
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| E-Mail |
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