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硫化共价有机框架用于减轻高温质子交换膜燃料电池中的酸盐中毒

Ruiyu Zhang¹, Pengyu Song¹, Mengmeng Zhu¹

¹Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Key Laboratory of Cluster Science, Ministry of Education, Frontiers Science Center for High Energy Material, Advanced Technology Research Institute (Jinan), School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China. luwang@bit.edu.cn.

Chemical communications (Cambridge, England)

|October 23, 2025

概括

硫化共价有机框架 (COFs) 保护高温质子交换膜燃料电池 (HT-PEMFCs) 中的金阴极催化剂免受酸盐中毒,在具有挑战性的条件下提高性能.

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
催化剂是一种催化剂.

背景情况:

高温质子交换膜燃料电池 (HT-PEMFCs) 提供高效率和燃料灵活性.
在HT-PEMFC中的 (Pt) 阴极催化剂容易因中毒而降解.
酸盐污染阻碍了催化剂的耐用性和燃料电池的整体性能.

研究的目的:

开发Pt阴极催化剂的保护策略,防止HT-PEMFC中酸盐中毒.
研究硫化共价有机框架 (COF) 与Pt催化剂的集成.
评估硫化COF对催化剂活性和在富含酸盐条件下的稳定性的影响.

主要方法:

硫化共价有机框架 (COF) 的合成和表征.
硫化COF与 (Pt) 纳米颗粒的整合,用于制备阴极催化剂.
改性催化剂的电化学测试,包括循环电压测量和电化学阻抗光谱学.
在模拟的高酸盐条件下评估催化剂性能.

主要成果:

实现了硫化COF与Pt催化剂的成功整合.
经过修改的催化剂在高酸盐度的情况下表现出更好的电化学活性.
硫化COF证明具有保护作用,减轻因酸盐中毒引起的Pt催化剂降解.
在模拟操作条件下观察到增强的催化性能.

结论:

硫化共价有机框架 (COF) 有效地保护Pt阴极催化剂免受HT-PEMFC中酸盐中毒的影响.
集成COF提供了一个有前途的策略,以提高HT-PEMFC的耐用性和性能.
这种方法解决了HT-PEMFC技术实际应用中的一个关键挑战.

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