| 학회 |
한국공업화학회 |
| 학술대회 |
2014년 봄 (04/30 ~ 05/02, 제주국제컨벤션센터) |
| 권호 |
18권 1호 |
| 발표분야 |
포스터-정밀화학 |
| 제목 |
Functionalized ionic liquids based on novel acyclic ammonium Cations with an ether substituent as electrolytes for lithium ion batteries |
| 초록 |
Lithium ion batteries (LIBs) have some advantages such as a high energy density, negligible memory effect and a less self-discharge. However, LIBs with carbonate electrolytes are flammable due to the relatively low thermal stability of the carbonate solvent. These flammable electrolytes may be replaced by nonvolatile and nonflammable ionic liquids(ILs). ILs are salts that exist as liquid state at room temperature although they are composed of ionic species, cations and anions. ILs have become increasingly popular owing to their 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, novel 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 |
김형태1, 강재식1, 김대수1, 임태은2, 문준영3, 오승모1, 김영규1
|
| 소속 |
1서울대, 2전자부품(연), 3인천대 |
| 키워드 |
ionic liquids; electrolytes; lithium secondary batteries; Ammonium cation
|
| E-Mail |
|
