基于HT-PEMFC应用的计算模型的有机-无机三醇基质子导电混合体
Towa Bunno1, Keiichiro Maegawa1,2, Mateusz Wlazło2
1Department of Electrical and Electronic Information Engineering, Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku-cho, Toyohashi, Aichi 441-8580, Japan.
ACS omega
|November 29, 2023
概括
一种新的三元混合材料通过三,TiO2和硫酸之间的双酸相互作用来增强质子导电性. 这种材料对无水质质子交换膜燃料电池具有前景.
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
- 物理化学 物理化学
背景情况:
- 无水质子导电对于高温燃料电池至关重要.
- 开发高效的质子导体材料是一个持续的挑战.
研究的目的:
- 为无水质质子导电设计和合成一种新的三元混合材料.
- 为了研究酸相互作用和质子导电性之间的关系.
- 为了评估材料在高温燃料电池中的性能.
主要方法:
- 使用机械化学方法合成三元混合物材料 (硫酸二氧化-三-二氧化).
- 使用密度函数理论和推拉质子原子距离 (PAD) 定律,理论上预测质子导电性.
- 在燃料电池中对材料特性和性能进行实验性表征.
主要成果:
- 这种三元混合材料具有高质子导电性,这是由于硫酸 (CHS), (Tz) 和TiO2.2之间的协同酸相互作用造成的.
- 理论计算预测三元复合材料的导电性比二元复合材料更高.
- 实验结果证实了增强的质子解离和导电性,特别是在无水条件下的150°C.
- 观察到改善了燃料电池中的膜导电性和发电.
结论:
- 双酸相互作用显著提高无水质质子导电性.
- 开发的CHS·Tz-TiO2材料是高温质子交换膜燃料电池的有希望的候选材料.
- PAD定律为预测这些材料中的质子导电性提供了一个有用的理论框架.
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