在低电场下,高温电容膜中的高能量储存密度高
Hua Wang1, Zhichao Hu1, Junhong Pan1
1State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China; Key Laboratory of Multi-Spectral Absorbing Materials and Structures of Ministry of Education, University of Electronic Science and Technology of China, Chengdu 610054, China.
Journal of colloid and interface science
|December 12, 2024
概括
这项研究开发了用于高温能量存储的新型酸 (HAP) 聚胺 (PI) 复合材料. 这些先进的材料提供了增强的能量密度和介电性质,对于苛刻的应用至关重要.
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
- 纳米技术纳米技术
背景情况:
- 高功率应用需要具有高热稳定的聚合物介电材料.
- 现有的材料在要求高温的环境中往往不足.
- 电动汽车,航空航天和弹射系统需要先进的储能解决方案.
研究的目的:
- 为聚胺 (PI) 复合材料合成和描述三种不同的酸 (HAP) 形态.
- 评估这些PI/HAP复合材料的高温介电和储能性能.
- 为了比较PI/海形HAP,PI/球形HAP和PI/棒形HAP复合材料的性能.
主要方法:
- 三种HAP形态的合成 (类似海,球形,棒形).
- 制造包含这些HAP形态的聚胺 (PI) 复合材料.
- 在高温下对介电性质和能量储存密度的实验性表征.
- 多物理有限元模拟用于分析电场行为和树木形成.
主要成果:
- 加入球形或棒形HAP创建了复杂的路径,在150°C时增强能量储存密度 (Ue).
- 酸 (HAP) 增加了聚胺 (PI) 的介电常数 (εr) 的最大值为4.96.6.
- 即使在低电场 (350 MV/m) 下,PI/HAP复合材料也实现了高储能密度 (4.82 J/cm3) 和高效率 (92.4%).
结论:
- 新型PI/HAP复合材料具有出色的高温储能能力.
- HAP的形态显著影响介电性质和能量密度.
- 这些材料在高温应用中为薄膜电容器提供了有前途的解决方案.
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