显著提升了聚合物介电器的高温能量储存,由聚甲基二氧化微球诱导
Zelong Chang1, Li Lei1, Linwei Zhu1
1School of Materials Science and Engineering, Ocean University of China, Qingdao 266100, China. zcshi@ouc.edu.cn.
Materials horizons
|October 29, 2024
概括
聚甲基六 (PMSQ) 微球在高温下增强聚胺 (PEI) 介电性能. 这些PMSQ/PEI复合材料显著提高了先进电力系统的储能密度和效率.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物科学 聚合物科学
- 电气工程 电气工程
背景情况:
- 聚合物介电材料对于下一代电力系统至关重要.
- 高温导致传统聚合物介电物的性能显著下降.
- 开发耐高温介电材料对于先进的应用是必不可少的.
研究的目的:
- 为了提高聚乙胺 (PEI) 的高温储能性能,使用聚甲基二氧化 (PMSQ) 微球.
- 研究PMSQ微球对PEI的介电性质和储能能力的影响.
- 探索有机-无机混合微球作为高温聚合物介电物的填充剂的潜力.
主要方法:
- 将聚甲基二氧化 (PMSQ) 微球纳入聚乙胺 (PEI) 矩阵.
- 制造PMSQ/PEI复合片. 复合片的制造
- 介电性质的表征,分解强度,以及在高温 (150°C和200°C) 下储能性能.
主要成果:
- 由于表面甲基组,PMSQ微球与PEI具有良好的兼容性.
- PMSQ微球有效地阻断电荷传输,增强分解强度.
- 含有5%重量的PMSQ的PMSQ/PEI复合膜实现了150°C时12.83 J cm-3和200°C时9.40 J cm-3的超高能量储存密度.
- 储能密度分别是150°C和200°C的纯PEI的10.5和50.5倍,效率>90%.
结论:
- 有机-无机混合微球,如PMSQ,有效提高聚合物介电物的高温性能.
- PMSQ/PEI复合膜显示出用于高温膜电容器应用的巨大潜力.
- PMSQ微球的独特结构和特性为克服高温聚合物介电物的局限性提供了可行的策略.
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