纳芬复合膜中极化过程中添加稀土金属的纳芬复合膜
Rene Castro1, Elena Karulina1, Nikolay Lapatin1
1Institute of Physics, Herzen State Pedagogical University of Russia, 48 Moika Emb., 191186 St. Petersburg, Russia.
Materials (Basel, Switzerland)
|September 28, 2023
概括
介电光谱检测显示,将欧和化添加到 perfluorosulfonic 膜中会改变放松过程和导电性. 这些变化与金属离子和聚合物矩阵之间的强相互作用有关.
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
- 固态物理 固态物理
背景情况:
- 由于其离子导电性, perfluorosulfonic 膜在各种应用中至关重要.
- 了解这些膜的介电性质是优化其性能的关键.
- 加入稀土元素可以改变聚合物矩阵的特性.
研究的目的:
- 为了研究用欧 (III) 和 (III) 化物合的高硫膜的介电性质和导电性.
- 阐明稀土金属离子对放松过程和电荷传输机制的影响.
- 在这些新型复合材料中建立结构属性关系.
主要方法:
- 介电光谱技术在10^0到10^7赫兹的频率范围内使用,温度在293到403K之间.
- 测量包括介电电容,介电损失和特定导电性作为频率和温度的函数.
- 分析的重点是确定放松过程及其对稀土离子结合的依赖.
主要成果:
- 观察到的电容度和损失最大值的分散表明膜中的各种放松过程.
- 欧和离子的存在显著改变了放松光谱和参数.
- 发现了特定导电率与频率的功率定律依赖性,温度影响了电荷传递机制.
结论:
- 欧和离子融入纳菲安膜会改变极化和电荷传输机制.
- 金属离子和聚合物矩阵之间强烈的相互作用是导致观察到的介电和导电性能的变化.
- 这些发现为设计基于化 perfluorosulfonic 膜的先进功能材料提供了洞察力.
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