优秀的介电性质和有限元素模拟Al-环氧复合材料与构造的超薄Al2O3平行板微电容器
Meng Cao1, Lei Li1, Rui Ze Guo1
1Lab of Dielectric Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310058, China.
ACS applied materials & interfaces
|June 22, 2023
概括
这项研究开发了用于嵌入式电容的先进金属聚合物复合材料. 通过压缩纳米粒子,他们创建了超薄的氧化微电容器,实现了高介电常数和低介电损失.
科学领域:
- 材料科学 材料科学 材料科学
- 电气工程 电气工程
- 纳米技术纳米技术
背景情况:
- 金属聚合物介电复合材料对于嵌入式电容器来说是有希望的.
- 同时实现高压电常数 (εr) 和低压电损失 (tan δ) 仍然是一个挑战.
研究的目的:
- 制定一种创建具有同时具有高介电常数和低介电损失的金属聚合物复合材料的策略.
- 为了研究复合结构内微电容器的形成.
主要方法:
- 压缩 (Al) 纳米粒子,在单轴压力 (P) 下具有自我被动化的超薄Al2O3外.
- 制备Al-环氧复合材料通过透液态环氧单体到Al紧物中.
- 使用有限元模拟来分析介电性质.
主要成果:
- 一个P为100MPa,Al体积分数 (υAl) 为53.7%的复合物在10kHz时表现出高er的189.
- 这一 εr 显著高于之前报告的 Al-聚合物复合材料.
- 复合材料显示低色 δ (<0.03) 和稳定的 εr 在频率和温度变化.
- 有限元模拟证实,扩大的Al2O3平行板微电容器可以增强能量储存和 εr.
结论:
- 该战略成功地克服了在金属聚合物复合材料中同时实现高介电常数和低介电损失的挑战.
- 超薄的Al2O3平行板微电容器的形成是提高介电性能的关键.
- 这些复合材料显示了高级嵌入式电容应用的巨大潜力.
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