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Novel inorganic fillers of 1D hydroxyapatite nanowires induced superior energy storage performances of P(VDF–HFP)-based composite films
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2022-09-10 , DOI: 10.1039/d2ta05451e Yu Cheng 1 , Zhongbin Pan 1 , Hanxi Chen 1 , Xiangping Ding 1 , Zhicheng Li 1 , Xu Fan 1 , Jinjun Liu 1 , Peng Li 2 , Jinhong Yu 3 , Jiwei Zhai 4
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2022-09-10 , DOI: 10.1039/d2ta05451e Yu Cheng 1 , Zhongbin Pan 1 , Hanxi Chen 1 , Xiangping Ding 1 , Zhicheng Li 1 , Xu Fan 1 , Jinjun Liu 1 , Peng Li 2 , Jinhong Yu 3 , Jiwei Zhai 4
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High-performance flexible dielectric capacitors have a decisive effect in advanced electronics and electrical power systems. Nevertheless, the discharge energy density (Ud) of dielectric capacitors is bounded by their weak breakdown strength (Eb) and low dielectric constant (K). In this work, mediate dielectric constant one-dimensional hydroxyapatite nanowires (HAP NWs) were synthesized and applied in poly(vinylidene fluoride-co-hexafluoropropene)-based (P(VDF–HFP)) nanocomposites for energy storage application. To mitigate electric field distortion and suppress free charge migration in nanocomposites, Al2O3 was insulated as an interfacial layer incorporated between 1D HAP NWs and polymer matrices, which were identified via phase field simulations and experimental results. Accordingly, P(VDF–HFP)/HAP@Al2O3 NWs composite films exhibit an excellent Ud of ∼27.6 J cm−3 accompanied by a high charging/discharging efficiency (η) of ∼72.9% at 650 MV m−1, which is ∼190% over neat P(VDF–HFP) (∼9.5 J cm−3 at 500 MV m−1) and ∼2200% improvements of bench-mark biaxially oriented polypropylene (∼1.2 J cm−3 at 650 MV m−1). This research offers a paradigmatic design to polymer-based composite films with high Ud and η for application in dielectric capacitors.
中文翻译：
一维羟基磷灰石纳米线的新型无机填料诱导 P(VDF-HFP) 基复合薄膜的优异储能性能
高性能柔性电介质电容器在先进的电子和电力系统中具有决定性的作用。然而，介电电容器的放电能量密度 ( U d ) 受限于其弱击穿强度 ( E b ) 和低介电常数 ( K )。在这项工作中，合成介电常数一维羟基磷灰石纳米线（HAP NWs）并将其应用于基于聚（偏二氟乙烯-共-六氟丙烯）（P（VDF-HFP））纳米复合材料的储能应用。为了减轻电场畸变和抑制纳米复合材料中的自由电荷迁移，Al 2 O 3被绝缘作为一维 HAP NW 和聚合物基质之间的界面层，通过相场模拟和实验结果确定。因此，P(VDF-HFP)/HAP@Al 2 O 3 NWs 复合薄膜在 650 MV m -时表现出约 27.6 J cm -3的优异U d以及约 72.9%的高充电/放电效率 ( η )如图1所示，比纯P(VDF-HFP)（在500 MV m -1时~9.5 J cm -3）提高了~190%，并且比基准双向拉伸聚丙烯提高了~2200%（在650时~1.2 J cm -3 MV m -1）。本研究为用于介电电容器的具有高U d和η的聚合物基复合薄膜提供了一种范式设计。
更新日期：2022-09-10
中文翻译：
一维羟基磷灰石纳米线的新型无机填料诱导 P(VDF-HFP) 基复合薄膜的优异储能性能
高性能柔性电介质电容器在先进的电子和电力系统中具有决定性的作用。然而，介电电容器的放电能量密度 ( U d ) 受限于其弱击穿强度 ( E b ) 和低介电常数 ( K )。在这项工作中，合成介电常数一维羟基磷灰石纳米线（HAP NWs）并将其应用于基于聚（偏二氟乙烯-共-六氟丙烯）（P（VDF-HFP））纳米复合材料的储能应用。为了减轻电场畸变和抑制纳米复合材料中的自由电荷迁移，Al 2 O 3被绝缘作为一维 HAP NW 和聚合物基质之间的界面层，通过相场模拟和实验结果确定。因此，P(VDF-HFP)/HAP@Al 2 O 3 NWs 复合薄膜在 650 MV m -时表现出约 27.6 J cm -3的优异U d以及约 72.9%的高充电/放电效率 ( η )如图1所示，比纯P(VDF-HFP)（在500 MV m -1时~9.5 J cm -3）提高了~190%，并且比基准双向拉伸聚丙烯提高了~2200%（在650时~1.2 J cm -3 MV m -1）。本研究为用于介电电容器的具有高U d和η的聚合物基复合薄膜提供了一种范式设计。
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