| 학회 |
한국재료학회 |
| 학술대회 |
2020년 가을 (11/18 ~ 11/20, 휘닉스 제주 섭지코지) |
| 권호 |
26권 1호 |
| 발표분야 |
A. 전자/반도체 재료 분과 |
| 제목 |
Enhanced electrostatic energy storage performance and thermal conductivity of P(VDF-HFP) nanocomposites by introducing surface engineered h-BN with Pd nano-particle via the Coulomb-Blockade Effect |
| 초록 |
Polymer-based dielectrics have been attracting great attention in a wide range of applications as energy storage devices. However, their failure due to low electrical breakdown and small recoverable energy density (Urec) may greatly limit practical utilization. In order to solve these issues, two-dimensional hexagonal boron nitride modified with polydopamine and metal palladium nano-particles (h-BN@PDA@Pd NPs) were introduced into a P(VDF-HFP) copolymer matrix to enhance energy storage capability and thermal conductivity. The nanocomposite film filled with 6 vol% h-BN@PDA@Pd NPs exhibits significantly improved recoverable energy density (Urec) of 58.6 J/cm3 , which is increased by 496% as compared with pure P(VDF-HFP) film, maintaining efficiency of 65% even under a high voltage of 500 MV/m. The in-plane thermal conductivity of nanocomposites is improved from 0.21 W/m·K to 2.83 W/m·K as increasing the filler content. This study suggests that dielectric polymer with surface engineered h-BN fillers through Coulomb-blockade effect of Pd NPs might be a simple and effective strategy for energy storage devices. |
| 저자 |
Sung-Yub Ji, Han-Bo Jung, Min-Kyu Kim, Dae-Yong Jeong
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| 소속 |
인하대 |
| 키워드 |
Polyvinylidene fluoride(PVDF); Composite; Recoverable energy density; Boron nitride; Thermal conductivity; Coulomb-blockade effect
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| E-Mail |
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