使聚合物单晶成为高性能介电体.
Min Chen1, Wee-Liat Ong2, Boyu Peng1
1MOE Key Laboratory of Macromolecular Synthesis and Functionalization, International Research Center for X Polymers, Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China.
Angewandte Chemie (International ed. in English)
|December 30, 2023
概括
创建了高订单的聚乙烯聚合物片状单晶 (PLSCs). 这些基于PLSC的电容器表现出优越的介电性质,为先进的介电材料提供了一条新的道路.
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:
- 半晶聚合物介电材料 (SPD) 对于先进的应用至关重要,但它们的性能受到结构障碍的限制.
- 由于复杂的聚合物结晶行为,在SPD中实现均的顺序是具有挑战性的.
- 聚合物片状单晶 (PLSC) 是最有序的SPD形式,非常适合研究高性能介电性质.
研究的目的:
- 研究高排序聚合物单晶片 (PLSC) 作为高性能介电材料的潜力.
- 开发一种制造和表征基于PLSC的介电器件的方法.
- 探索聚乙烯PLSC (PE PLSC) 的介电性质.
主要方法:
- 选择聚乙烯 (PE) 作为模型半晶体聚合物介电.
- 开发了一种获得大,均和高质量的PE PLSCs的方法.
- 设计了一种非破坏性的策略,用于构建基于PE PLSC的垂直电容器.
主要成果:
- 成功合成了大型,均和高质量的PE PLSC.
- 使用PE PLSCs制造的纳米厚的垂直电容器.
- 实现了特殊的介电性质:破裂强度为6.95 MV/cm,介电常数为2.14±0.07,超过了整洁的PE.
结论:
- 高度订单的PE PLSC与传统PE相比,具有优越的介电性能.
- PLSC是开发下一代高性能介电材料的有希望的平台.
- 这项研究提供了对有序半晶聚合物介电物的性能极限的见解.
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