| 학회 |
한국고분자학회 |
| 학술대회 |
2018년 가을 (10/10 ~ 10/12, 경주컨벤션센터) |
| 권호 |
43권 2호 |
| 발표분야 |
고분자합성 |
| 제목 |
Synthesis of modified hyperbranched solid PEO electrolyte via cationic polymerization for Li-ion batteries |
| 초록 |
As the needs for highly stable electrolytes have arisen, liquid electrolytes have been replaced by solid polymer electrolytes. PEO polymer is widely used in polymer electrolyte due to the high chain flexibility and low Tg. And hyperbranched structures have different properties than linear structures such as low crystallinity and low entanglement. Due to the characteristics of hyperbranched structure, it can easily transport the Li ions. In order to making solid polymer electrolyte, hyperbranched polymer need to hard segment for stability of membrane because hyperbranched PEO is liquid like state. And we modified the end groups of hyperbranched PEO to another functional groups to obtain better ion conductivity. The molecular weight and structure of hyperbranched PEO were measured by NMR, TEM and FT-IR. Through ionic conductivity measurement, it was confirmed that our synthesized hyperbranched solid PEO electrolyte can be used in Li-ion batteries. |
| 저자 |
정세영, Santosh Kumar, 이승제, 김보람, 이재석
|
| 소속 |
GIST |
| 키워드 |
electrolyte; Li-ion batteries; hyperbranched PEO
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| E-Mail |
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