| 학회 |
한국공업화학회 |
| 학술대회 |
2018년 가을 (10/31 ~ 11/02, 제주국제컨벤션센터(ICC JEJU)) |
| 권호 |
22권 2호 |
| 발표분야 |
전기화학_포스터 |
| 제목 |
Fabrication of highly-packed, crack-free sulfur electrodes by scaffold-supported drying for ultrahigh-sulfur-loaded lithium sulfur batteries |
| 초록 |
Despite notable progresses of lithium sulfur (Li-S) batteries during the past decade, achieving high performances with high loading sulfur cathodes remains a key challenge for the commercialization of practical Li-S batteries. This paper presents a novel method to fabricate a crack-free sulfur electrode of an ultrahigh sulfur loading (16 mg cm-2) and a high sulfur content (65 %). Introducing a porous scaffold on the top of the cast of sulfur slurry prevented the crack formation during the drying of the cast. The scaffold-supported sulfur cathode delivers a high capacity of 10.3 mAh g-1 at the 80th cycle, demonstrating the crack-free structure renders uniform redox reaction at such high sulfur loading. The highly-packed feature of the sulfur cathode is advantageous in reducing the amount of electrolyte which additionally contributes to high energy density. Therefore, the scaffold-supported fabrication provides an effective route to design a practically viable, energy-dense Li-S battery. |
| 저자 |
곽호범, 김희탁
|
| 소속 |
KAIST |
| 키워드 |
Solvent drying; high loading; Li-S; crack-free
|
| E-Mail |
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