화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Materials Research, Vol.29, No.3, 175-182, March, 2019
DOI10.3740/MRSK.2019.29.3.175  Export Citation
상온분말분사공정을 이용한 고밀도 폴리머-세라믹 혼합 코팅층 제조 및 에너지 저장 특성 향상
Fabrication of High Density BZN-PVDF Composite Film by Aerosol Deposition for High Energy Storage Properties
임지호, 김진우, 이승희, 박춘길, 류정호1, 최두현2, 정대용†
  • 인하대학교 신소재공학과
  • 1영남대학교
  • 2국방과학연구소
Ji-Ho Lim, Jin-Woo Kim, Seung Hee Lee, Chun-kil Park, Jungho Ryu1, Doo hyun Choi2, and Dae-Yong Jeong†
  • Department of Materials Science and Engineering, Inha University, Incheon 22212, Republic of Korea
  • 1School of Materials Science & Engineering, Yeungnam University, Gyeongsan, Gyeongbuk 38541, Republic of Korea
  • 2Agency for Defense Development, Daejeon 34186, Republic of Korea
E-mail:
This study examines paraelectric Bi1.5Zn1.0Nb1.5O7 (BZN), which has no hysteresis and high dielectric strength, for energy density capacitor applications. To increase the breakdown dielectric strength of the BZN film further, poly(vinylidene fluoride) BZN-PVDF composite film is fabricated by aerosol deposition. The volume ratio of each composition is calculated using dielectric constant of each composition, and we find that it was 12:88 vol% (BZN:PVDF). To modulate the structure and dielectric properties of the ferroelectric polymer PVDF, the composite film is heat-treated at 200 °C for 5 and 30 minutes following quenching. The amount of α-phase in the PVDF increases with an increasing annealing time, which in turn decreases the dielectric constant and dielectric loss. The breakdown dielectric strength of the BZN film increases by mixing PVDF. However, the breakdown field decreases with an increasing annealing time. The BZN-PVDF composite film has the energy density of 4.9 J/cm3, which is larger than that of the pure BZN film of 3.6 J/cm3.
Keywords:BZN;poly(vinyliden-fluoride);aerosol deposition;energy density;composite film
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