聚合物极性对聚合物/液体金属复合物的接口相互作用的影响
Yuhang Li1, Hangyu Guo1, Zilong Xie1
1College of Polymer Science & Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Cheng Du, 610065, P. R. China. xiezilong0731@qq.com.
Chemical communications (Cambridge, England)
|August 8, 2023
概括
在软聚合物/液体金属 (LM) 复合材料中增加聚合物的极性,增强了接口相互作用. 这导致灵活电子设备的容量储能密度提高.
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:
- 软聚合物/液体金属 (LM) 复合材料对灵活的电子产品具有前景.
- 接口相互作用极大地影响了它们的电性能和能量密度.
- 优化这些接口是推动LM设备技术发展的关键.
研究的目的:
- 研究聚合物极性如何影响聚合物/LM复合材料的接口相互作用.
- 确定最佳的聚合物矩阵材料,以提高LM复合材料的性能.
- 为了指导下一代灵活的储能器件的设计.
主要方法:
- 使用了四种不同极性的聚合物矩阵:聚烯 (PP),聚乙烯二甲 (PET),聚乙烯化物 (PVDF) 和聚乙烯化物-三乙烯-化乙烯 (PVDF-TrFE-CFE)).
- 分析了基于聚合物极性的接口相互作用顺序.
- 评估了聚合物极性的影响与LM氧化物外的双极-双极相互作用.
- 测量了产生的复合材料的容量储存密度和能效.
主要成果:
- 接口相互作用强度按照这个顺序进行:PP/LM < PET/LM < PVDF/LM ≤ P(VDF-TrFE-CFE) /LM.
- 较高的聚合物极性显著增强了聚合物和LM氧化物外之间的双极-双极相互作用.
- 高极性的PVDF/LM复合材料显示出更好的接口相互作用,抑制介电损失.
- PVDF/LM薄膜实现了容量储存密度增加44% (1.68 J cm-3),同时保持了80%的能源效率.
结论:
- 聚合物极性是决定聚合物/LM复合材料界面相互作用的关键因素.
- 高极性聚合物,如PVDF,在增强接口稳定性和电气性能方面是有效的.
- 这些发现为通过选择合适的聚合物矩阵设计优质灵活的储能材料提供了途径.
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