内在设计的聚胺介电材料具有很大的能量储存密度和在恶劣的超高温下放电效率
Yaya Tian1, Ming-Sheng Zheng1, Yuchao Li2
1Beijing Advanced Innovation Center for Materials Genome Engineering, School of Chemistry and Biological Engineering, University of Science & Technology Beijing, Beijing 100083, P. R. China. zhajw@ustb.edu.cn.
Materials horizons
|October 16, 2023
概括
新的含聚胺 (CPI) 提供优越的介电性质和高热稳定性,适用于苛刻的储能应用. 这些先进的聚合物介电材料在极端高温条件下表现出增强的性能.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 电气工程 电气工程
背景情况:
- 高温稳定的聚合物介电材料对于先进的能量存储至关重要.
- 像BOPP这样的现有材料在恶劣条件下缺乏足够的性能.
研究的目的:
- 为了合成新型的含有蓝的聚胺 (CPI),用于高温储能.
- 评估合成CPI的介电性质,热稳定性和能量密度.
主要方法:
- 一种新型二胺单体的合成: bis(2-cyano-4-aminophenyl)amine.
- 制备一系列含有蓝的聚胺 (CPI-1-3).
- 介电性质,分解强度和热稳定性的表征.
主要成果:
- CPI-3的最大介电性在10^2 Hz时为5.5,比BOPP高2.5倍.
- 在250°C时,CPI-1的分解强度为433 MV m^-1和能量密度为2.5 J cm^-3.
- 合成的CPI表现出优良的介电性质和高热稳定性.
结论:
- 新型CPI具有卓越的介电性能和热稳定性.
- 这些材料是高温储能应用的有希望的候选材料.
- 内在设计方法为在恶劣的电气和热条件下运行的材料提供了潜力.
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