耐火聚乙醇复合材料具有改善的离子导电性
Diana Serbezeanu1, Corneliu Hamciuc1, Tăchiță Vlad-Bubulac1
1Department of Polycondensation and Thermally Stable Polymers, "Petru Poni" Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley 41A, 700487 Iasi, Romania.
Membranes
|July 28, 2023
概括
使用聚乙烯醇 (PVA) 的耐火聚合物复合材料被用阻燃剂和纳米粒子增强. 这些材料表现出更好的耐火性和导电性,使它们适合离子电池.
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
- 电化学 电化学 电化学
背景情况:
- 聚乙烯醇 (PVA) 是一种多功能聚合物矩阵.
- 开发耐火和导电材料对于储能应用至关重要.
- 结合阻燃剂和导电填充剂可以增强复合材料的性能.
研究的目的:
- 用于制备基于PVA的耐火聚合物复合材料.
- 提高PVA复合材料的离子导电性,以便在离子电池中潜在使用.
- 为了研究阻燃剂,BaTiO3,石墨烯氧化物和LiClO4对材料性能的影响.
主要方法:
- 使用聚乙烯醇 (PVA),聚酸 (阻燃剂) 和酸 (交联剂) 的聚合物复合制剂.
- 加入LiClO4,BaTiO3和石墨烯氧化物 (GO) 来增强离子导电性.
- 使用红外光谱学,扫描电子显微镜,热重力测量分析 (TGA),差分扫描热度计 (DSC) 和微尺度燃烧试验进行表征.
- 通过宽带介电谱学对介电性质的评估和电导率的测量.
主要成果:
- 与对照样本相比,包含阻燃剂 (PFRV),BaTiO3和石墨烯氧化物 (GO) 的复合材料具有更高的耐火性.
- 在700°C时,TGA的增强残留量从PFRV和BaTiO3.6的7.9 wt%增加到23.6 wt%.
- LiClO4显著改善了电特性,包括电容和导电性.
- 这种含有35%重量%LiClO4的复合材料实现了2.46 × 10^-3 S/m的最高交流电导率.
- 在介电损失高于103Hz时观察到放松峰值.
结论:
- 开发的基于PVA的复合材料显示出增强的耐火性和离子导电性.
- 添加PFRV,BaTiO3,GO和LiClO4有效地改变了材料的热和电特性.
- 这些改进的复合材料显示出在离子电池制造中应用的巨大潜力.
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