| 학회 |
한국고분자학회 |
| 학술대회 |
2021년 가을 (10/20 ~ 10/22, 경주컨벤션센터) |
| 권호 |
46권 2호 |
| 발표분야 |
기능성 고분자 |
| 제목 |
Facile Li-ion conduction at ambient temperature enabled by polymer electrolyte based on poly(arylene ether sulfone)-g-PEG/PVEC for Li metal battery |
| 초록 |
Polymer electrolytes usually suffer from the low ionic conductivity and Li-ion transference number at ambient temperature which limit their practical application for solid state lithium metal battery. In this study, the synergistic effects of poly(ethylene glycol) (PEG) and poly(vinyl ethylene carbonate) (PVEC) facilitate the lithium ion transports to resolve these issues without degradation of mechanical properties by virtue of poly(arylene ether sulfone). PVEC enables facile dissociation of lithium salt owing to its high dielectric constant and the dissociated lithium-ion can be transported smoothly through segmental motion of flexible PEG chains. The prepared electrolyte membranes exhibited high ionic conductivity of 8.1*10-4 S cm-1 and lithium-ion transference number of 0.65 with significantly improved interfacial stability at 25 ℃. From these experimental results, the prepared electrolytes can be a promising candidate for solid-state lithium metal battery. |
| 저자 |
양희명, 김덕준
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| 소속 |
성균관대 |
| 키워드 |
Solid polymer electrolyte; Ionic conductivity; Poly(vinyl ethylene carbonate); Lithium battery
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| E-Mail |
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