| 학회 |
한국재료학회 |
| 학술대회 |
2017년 봄 (05/17 ~ 05/19, 목포 현대호텔) |
| 권호 |
23권 1호 |
| 발표분야 |
1. 고에너지 밀도 및 전기열량 유전체(High Energy Density and Electrocaloric Materials) |
| 제목 |
Antiferroelectric Thin-film Capacitors with High Energy Storage Densities, Low Energy Losses, and Fast Discharge Times |
| 초록 |
We demonstrate a capacitor with high energy densities, low energy losses, fast discharge times, and high temperature stabilities, based on Pb0.97Y0.02[(Zr0.6Sn0.4)0.925Ti0.075]O3 (PYZST) antiferroelectric thin-films. PYZST thin-films exhibited a high recoverable energy density of Ureco = 21.0 J/cm3 with a high energy storage efficiency of η = 91.9% under an electric field of 1300 kV/cm, providing faster microsecond discharge times than those of commercial polypropylene capacitors. Moreover, PYZST thin-films exhibited high temperature stabilities with regard to their energy storage properties over temperatures ranging from room temperature to 100 ℃ and also exhibited strong charge-discharge fatigue endurance up to 107 cycles. |
| 저자 |
안창원1, 원성식2, 채송아1, 이재신2, 김일원1
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| 소속 |
1울산대, 2물리학과 |
| 키워드 |
solid-state dielectric capacitors; energy storage; antiferroelectrics; thin-films; fatigue
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| E-Mail |
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