层次接口结构允许在PEMFC微孔层中在广泛的湿度范围内进行适应性气液运输
Mingyu Lou1,2, Shunbo Lan1,2, Rui Lin1,2
1School of Automotive Studies, Tongji University, Shanghai 201804, China.
ACS applied materials & interfaces
|January 13, 2026
概括
质子交换膜燃料电池 (PEMFC) 中微孔层 (MPL) 的新型层次接口结构显著改善了在各种湿度条件下水管理和功率密度.
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
- 化学工程是化学工程的重要组成部分.
背景情况:
- 有效的水资源管理对于质子交换膜燃料电池 (PEMFC) 的性能至关重要.
- 微孔层 (MPL) 结构修改是优化水平衡的关键策略.
研究的目的:
- 开发和评估一个层次的接口结构MPL,以加强PEMFC的水资源管理.
- 为了研究这种新的MPL结构对燃料电池性能在广泛的湿度范围内的影响.
主要方法:
- 制造一个层次的接口结构MPL与密集的表面和穿孔.
- 使用新型MPL对PEMFC进行实验测试.
- 毫米尺度格子博尔茨曼法 (LBM) 模拟来分析水资源管理机制.
主要成果:
- 层次式MPL在广泛的湿度条件下表现出卓越的性能,功率密度在2A/cm2时比正常MPL增加12%.
- 这种结构显著降低了氧气运输阻力 (OTR),并扩大了干燥区域的运行范围.
- 皮膜模拟揭示了密集区域 (保持水分) 和穿孔 (气体扩散/水分去除) 在不同湿度水平的双重作用.
结论:
- 层次的接口结构MPL提供了一种有效的策略,可以在PEMFC中实现卓越的水资源管理.
- 这种设计增强了燃料电池组件内的气液运输动态.
- 这些发现为未来的MPL设计和燃料电池优化提供了宝贵的见解.
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