对重新设计高温介电聚合物的储能性能的影响
Ajinkya A Deshmukh1, Chao Wu2,3, Omer Yassin4
1Institute of Material Science, University of Connecticut, Storrs, Connecticut 06269, United States.
ACS applied materials & interfaces
|October 2, 2023
概括
化聚氧化化胺聚合物增强了能量储存,25%化版本实现了高分解强度和能量密度. 然而,较高的含量会增加导电损耗,影响效率.
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
- 储能 储能 储能 储能 储能 储能
背景情况:
- 高温聚合物介电材料对于先进的能量存储至关重要.
- 传统的聚合物在高温和电场下降解,限制了性能.
- 需要新的聚合物结构来满足苛刻的储能要求.
研究的目的:
- 为了研究的加入对聚氧松化物化物聚合物的储能特性的影响.
- 探索具有同时具有宽带间隙和高玻璃过渡温度 (Tg) 的聚合物,用于储能应用.
- 了解管控化聚合物介电物的结构-性质关系.
主要方法:
- 系统合成具有不同含量的多氧化或玻尿酸化聚合物的聚合物.
- 能量储存性能的表征,包括分解强度和能量密度.
- 分析聚合物带间隙 (紫外线光谱) 和玻璃过渡温度 (差异扫描热度计).
主要成果:
- 一种25%化氧化合聚合物实现了700 MV/m的分解强度和6.3 J/cm3的放电能量密度,效率为90%.
- 化增加了聚合物带间隙,但降低了玻璃过渡温度 (Tg).
- 更高的含量导致传导损耗增加和效率降低,可能是由于多余的自由体积.
结论:
- 化是一种可行的策略,可以增强聚焦化胺聚合物的储能性能.
- 通过化进行分子工程提供了一种途径,可以根据特定的储能需求量身定制介电性质.
- 了解与化相关的权衡是设计高效,高性能聚合物介电物的关键.
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