四元化奇托/聚乙醇离子交换膜,增强了功能化的阿塔普尔吉特粘土,具有离子"链球"表面结构
Bangjun Deng1, Chunli Gong2, Sheng Wen2
1School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan 430205, China; College of Technology, Hubei Engineering University, Xiaogan 432000, China.
International journal of biological macromolecules
|May 31, 2024
概括
功能化的阿塔普尔吉特粘土增强了酸盐基膜,用于性离子交换应用. 这些复合膜表现出更好的机械强度和氧化导电性,使燃料电池性能更高效.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 聚合物科学 聚合物科学
背景情况:
- 生物质是性离子交换膜 (AEM) 的有前途材料,因为它具有可持续性和可修改性.
- 然而,基托桑基的AEM很难平衡高氧导电性与足够的机械性能.
研究的目的:
- 通过将功能化阿塔普尔吉特粘土 (f-ATP) 纳入四元化奇托 (QCS) /聚乙醇 (PVA) 矩阵来开发高性能复合AEM.
- 研究f-ATP对复合膜的机械和电化学性能的协同作用.
主要方法:
- 制备一种具有独特离子表面结构的新型功能化阿塔普尔吉特粘土 (f-ATP).
- 通过将f-ATP纳入QCS/PVA矩阵来制造复合AEM.
- 膜性质的表征,包括机械强度,氧化导电性和性稳定性.
- 在性直接甲醇燃料电池中复合AEM的评估.
主要成果:
- 复合膜表现出增强的机械性能,其最大抗拉强度为24.62 MPa,破裂时的延长率为33.8%.
- 膜在80°C时达到46mS cm−1的最大氧导电率.
- 在120小时的性处理后,保持了83%的高剩余离子交换能力 (IEC).
- 一个组装的性直接甲醇燃料电池在80°C时显示出功率密度为49.3mW cm−2.
结论:
- 加入f-ATP显著改善了QCS/PVA复合体AEM的机械完整性和离子导电性.
- 这种新型复合材料为开发用于能源应用的高性能离子交换膜提供了一个有前途的战略.
- 增强的性能为高效的性直接甲醇燃料电池铺平了道路.
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