| 학회 | 한국고분자학회 |
| 학술대회 | 2005년 가을 (10/13 ~ 10/14, 제주 ICC) |
| 권호 | 30권 2호 |
| 발표분야 | 기능성 고분자 |
| 제목 | Ion Conducting Behaviors of Polymeric Composite Electrolytes Containing Imidazolium Salts as Additive Materials |
| 초록 | A poor room-temperature conductivity and slow ion transfer of electrolytes based on high-molecular weight polyethylene oxide (PEO) have impeded development of lithium-ion batteries with solid electrolytes. To improve the ion conductivity of polymer electrolytes, composite polymer electrolytes having additives were considered. By preparation of composite electrolytes containing nano-size ceramic fillers or organic materials, the electrochemical and mechanical properties can be improved. On the other hand, some imidazolium salts are studied for a modification of ion transfer behaviors of electrolytes. In this work, the conducting polymer composite electrolytes were made by using poly(ethylene oxide) (PEO), ethylene oxide oligomers and imidazolium salts. The influence of oligomers having a different molecular weight and imidazolium salts as additives on the ionic conductivities and the interfacial characteristics was analyzed. They were determined by the electrochemical impedance spectroscopy (EIS), DSC, and XRD methods. It can be found that the ionic conductivity of the composite electrolytes showed improved behaviors due to the decreased crystallinity and better ion transfer by addition of additive materials. |
| 저자 | 김 석, 이은정, 이성구, 박수진 |
| 소속 | 한국화학(연) |
| 키워드 | ion conducting behaviors; composite electrolytes; additive materials; imidazolium salts |
