| 학회 |
한국재료학회 |
| 학술대회 |
2021년 봄 (05/12 ~ 05/14, 광주 김대중컨벤션센터) |
| 권호 |
27권 1호 |
| 발표분야 |
A. 전자/반도체 재료 분과 |
| 제목 |
High dielectric and breakdown performances achieved in MXene@PDA@Pd NPs/PVDF nanocomposites by Coulomb-Blockade Effect |
| 초록 |
Flexible dielectrics with high dielectric constant (K) and low loss have attracted considerable attention for a wide range of applications in electronic devices. In the present work, a ferroelectric polymer, poly(vinylidene fluoride-hexafluoropropylene) P(VDF-HFP) copolymer, was used to fabricate dielectric composite films with high K ceramic fillers. However, a large amount of the ceramic filler is required to satisfy enough high K of composite film, decreasing flexibility and economic efficiency. To overcome this issue, Ti3C2 MXene with high K conductive fillers modified with polydopamine (PDA) and metal palladium nanoparticles (MXene@PDA@Pd NPs) are introduced into a P(VDF-HFP) copolymer matrix. The PDA coating improves the compatibility between the ceramic MXene fillers and the polymer matrix. Contrary to the general idea, the ultra-small Pd NPs enhance the breakdown strength and decrease dielectric loss of the polymer nanocomposites through the Coulomb-blockade effect. This study suggests that a dielectric polymer with surface-engineered conductive MXene fillers through a Coulomb-blockade effect of metal Pd NPs might be an effective strategy for high energy storage devices.
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| 저자 |
지성엽, 김민규, 김삼정, 김승욱, 임지호, 정대용
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| 소속 |
인하대 |
| 키워드 |
Coulomb-Blockade Effect; Dielectric polymer; Energy density; Nanocomposite; Nano metal
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| E-Mail |
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