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一个LDH增强的多孔聚硫膜合为离子交换膜燃料电池

Yindong Wang¹, Wei Liu¹, Shu Shang¹

¹Center of Nanomaterials for Renewable Energy (CNRE), State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, PR China. le.shi@mail.xjtu.edu.cn.

Materials horizons

|July 1, 2025

概括

一种新的聚硫复合膜与层叠的双氧化物纳米层,为离子交换膜燃料电池提供高氧化物导电性和稳定性. 这一进步使得使用非贵金属催化剂实现高效,持久的能量转化.

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
能源转换能源转换

背景情况:

阳离子交换膜燃料电池 (AEMFC) 对使用非贵金属催化剂具有前景.
关键的挑战包括开发具有高氧化物导电性和长期稳定的离子交换膜.
目前的膜往往缺乏必要的性能和耐用性,以实现广泛采用.

研究的目的:

为AEMFCs开发一种高性能离子交换膜.
解决现有膜在导电性和稳定性方面的局限性.
为AEMFC应用程序创建一个具有成本效益和高效的膜解决方案.

主要方法:

制造基合多孔聚硫 (PES) 膜与在现场培养的基层双氧化物 (LDH) 纳米片 (PES-LDH).
膜的结构性,热性和离子传输性质的表征.
将PES-LDH膜集成到AEMFC中进行性能和耐久性测试.

主要成果:

PES-LDH膜表现出优异的结构和热稳定性,具有超低的膨胀率 (1.49%).
通过相互连接的LDH纳米板和吸附,实现了高氧导电性,从而实现了快速的离子传输.
使用PES-LDH膜的AEMFC实现了高功率密度 (680.7mW cm−2在80°C,455.6mW cm−2在110°C),并表现出良好的耐用性 (16%的电压衰减超过100小时).
通过二次性兴奋剂过程,可以完全恢复膜的性能.

结论:

开发的PES-LDH复合膜显示出用于高效的AEMFC应用的巨大潜力.
膜的独特结构促进了高效的氧化离子运输,并提高了稳定性.
这项工作通过克服膜限制,为推进AEMFC技术提供了可行的途径.

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