| 학회 |
한국고분자학회 |
| 학술대회 |
2010년 가을 (10/07 ~ 10/08, 대구 EXCO) |
| 권호 |
35권 2호 |
| 발표분야 |
이차전지용 고분자소재 |
| 제목 |
Coating with macroporous polyarylate on the polyethylene separator via a nonsolvent induced phase separation process for the enhancement of thermal stability |
| 초록 |
Microporous thin film fabricated from high density polyethylene (PE) is mostly used as separator for commercially available lithium ion batteries. Shutdown of a PE separator takes place when a lithium-ion battery is overcharged. If the mechanical properties of the separator deteriorate greatly after shutdown, a safety hazard leaded by internal short of circuits in the cell can occur. The shutdown temperature of a PE separator is close to its meltdown temperature. So, lithium battery can be seriously damaged after shutdown. To maintain robust mechanical properties after shutdown, we design the separator that have a porous PE layer coated with another porous polymer like a polyarylate (PAR) that have higher thermal stability. Nonsolvent induced phase separation process is used for preparing a porous coating layer. The formation of a porous coating layer on the PE separator and changes in morphology with the casting solution compositions were confirmed by scanning electron microscopy. |
| 저자 |
송근원, 김창근, 권혁중
|
| 소속 |
중앙대 |
| 키워드 |
Lithium; battery; separator; polyethylene
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| E-Mail |
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