| 학회 |
한국공업화학회 |
| 학술대회 |
2021년 봄 (05/12 ~ 05/14, 부산 벡스코(BEXCO)) |
| 권호 |
25권 1호 |
| 발표분야 |
포스터-에너지저장·변환 |
| 제목 |
Nanoporous flame retardant separators based on polyacrylonitrile/phosphazene composites |
| 초록 |
Flame retardancy and heat resistance of a separator is significantly important for the safety of the next generation of lithium-ion batteries. As one of the potential materials for a separator, polyacrylonitrile copolymers (coPAN) have been studied due to their excellent thermal and mechanical properties. With the coPAN, we have fabricated a novel composite separator incorporating phosphazene, a flame retardant agent, to suppress the combustion of the flammable organic electrolytes. The electrospinning technique was used for the nanoporous coPAN/phosphazene nonwoven, and then it was partially oxidized at 210 °C for 30 min to improve its heat resistance (＜5% thermal shrinkage at 200 °C) and tensile strength (＞40 Ma). For the electrochemical properties, the composite separators were employed in the coin-cells and evaluated during charging-discharging operations. |
| 저자 |
강석현1, 홍영택2, 홍성권1, 윤상준2, 유덕만2
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| 소속 |
1충남대, 2한국화학(연) |
| 키워드 |
Electrospinning; flame retardant; secondary battery
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| E-Mail |
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