Fabrication of High Density BZN-PVDF Composite Film by Aerosol Deposition for High Energy Storage Properties

Ji-Ho Lim; Jin-Woo Kim; Seung Hee Lee; Chun-kil Park; Jungho Ryu; Doo hyun Choi; Dae-Yong Jeong

doi:10.3740/MRSK.2019.29.3.175

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Fabrication of High Density BZN-PVDF Composite Film by Aerosol Deposition for High Energy Storage Properties 상온분말분사공정을 이용한 고밀도 폴리머-세라믹 혼합 코팅층 제조 및 에너지 저장 특성 향상

March 2019. pp. 175-182

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Abstract

This study examines paraelectric Bi_1.5Zn_1.0Nb_1.5O₇ (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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Information

Publisher :Materials Research Society of Korea
Publisher(Ko) :한국재료학회
Journal Title :Korean Journal of Materials Research
Journal Title(Ko) :한국재료학회지
Volume : 29
No :3
Pages :175-182
Received Date : 2018-11-28
Revised Date : 2019-01-10
Accepted Date : 2019-01-14
DOI :https://doi.org/10.3740/MRSK.2019.29.3.175

Korean Journal of Materials Research ISSN:1225-0562(Print) 2287-7258(Online) 한국재료학회지

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