通过捕获和分散载体在基于PESU的纳米复合材料薄膜电容器内部来提高综合性能
Zhicheng Li1, Yu Zhang2, Zhongbin Pan1
1School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, Zhejiang, China.
ACS applied materials & interfaces
|February 17, 2024
概括
使用聚乙硫和化纳米片的新复合膜为薄膜电容器提供了高温介电性能. 这种材料在恶劣环境中实现了高能量密度和高效率.
科学领域:
- 材料科学 材料科学 材料科学
- 电气工程 电气工程
- 聚合物科学 聚合物科学
背景情况:
- 薄膜电容器对于储能和高功率系统至关重要.
- 高温和电场的恶劣环境会导致传统薄膜电容器的显著能量损失.
研究的目的:
- 为薄膜电容器开发一种复合介电材料,能够在高温下有效运行.
- 在苛刻的条件下提高薄膜电容器的能量密度和效率.
主要方法:
- 由聚乙硫 (PESU) 和化纳米板 (BNNSs) 构成一个复合膜.
- 利用密度函数理论 (DFT) 来分析电子属性和电荷迁移机制.
- 评估了介电性能,能量密度和高温时的效率.
主要成果:
- PESU/BNNS复合膜显示出高放电能量密度,在150°C时为5.89 J/cm3,在200°C时为3.86 J/cm3.
- 在150°C和200°C时都能达到90%以上的能效.
- 引入BNNS创造了模块化电荷迁移的陷,增强了介电性质.
结论:
- 开发的PESU/BNNS复合材料是高性能薄膜电容器在恶劣的高温环境中运行的有希望的介电材料.
- 这种材料在极端热条件下克服了现有的介电材料的局限性.
- 该研究为先进的储能和功率电子应用提供了可行的解决方案.
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