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在 perfluorosulfonic 酸 (PFSA) 膜燃料电池中发现关键参数,以提高性能

Valdecir A Paganin¹, Alan M P Sakita¹, Thiago Lopes²

¹São Carlos Institute of Chemistry, University of São Paulo, São Paulo 13560-970, Brazil.

|March 26, 2025

概括

优化质子交换膜燃料电池 (PEMFC) 组件是提高效率的关键. 高温/低压热压和使用纤维素纸进行压力均化显著提高了性能.

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
能源转换能源转换

背景情况:

质子交换膜燃料电池 (PEMFC) 对可持续能源至关重要,为化石燃料提供了替代品.
优化膜电极组件 (MEA) 准备对于提高PEMFC效率和耐用性至关重要.
催化层 (CL) 相互作用和气体可访问性等因素极大地影响了细胞性能.

研究的目的:

调查热压条件和电池收紧对PEMFC性能的影响.
在不同的制剂参数下,评估不同硫酸 (PFSA) 膜 (Aquivion®,Fumapem,Nafion®) 的影响.
为了确定纤维素纸在MEA制备过程中作为压力均剂的有效性.

主要方法:

热压方法的比较分析 (125°C/高压与145°C/低压).
评估使用纤维素纸和没有纤维素纸作为压力均剂的MEA制剂.
燃料电池性能测试和电化学表征 (循环电压计).

主要成果:

与125°C/高压方法相比,145°C/低压热压方法的燃料电池性能优于125°C/高压方法.
加入纤维素纸增加了电流密度大约2.5倍.
所有的MEA都显示出相似的表面积,但高温压力略有降低了脱吸电荷.

结论:

热压的温度和压力显著影响PEMFC性能,较高的温度和较低的压力更有利.
纤维素纸是改善MEA制备和提高燃料电池效率的有效添加剂.
虽然螺栓扭矩具有不一致的效果,但最佳值可以在特定条件下提高PEMFC性能.

关键词:

准备MEA的准备工作在PEMFCs中,PEMFCs可以在PEMFC中使用.在PFSA膜中使用.细胞的性能是细胞的性能.细胞收紧拉紧细胞通过热压压的方式.吸收的方法是吸收的吸收.压力均化器压力均化器

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