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在水电解的有序膜电极组件中,氧化物填充的多孔运输层

Shiqi Zhao^1,2, Yiyang Liu¹, Yuzhuo Jiang¹

¹Division of Advanced Nanomaterials, Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences (CAS), Suzhou 215123, China.

ACS applied materials & interfaces

|October 28, 2025

概括

使用CeO2纳米粒子和MCC的新型微孔层 (MPL) 通过改善催化剂层接触来增强质子交换膜水电解 (PEMWE). 这使得在超低负荷下实现高性能.

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
化学工程是化学工程的重要组成部分.

背景情况:

催化剂和多孔输送层 (PTL) 之间的弱接口接触阻碍了质子交换膜水电解 (PEMWE) 的效率.
低催化剂负载对于成本有效的PEMWE至关重要,但由于接口问题,它经常受到性能限制.

研究的目的:

开发一种新的微孔层 (MPL),以改善低负载PEMWE系统的接口接触.
通过优化MPL设计,提高膜电极组件 (MEAs) 的性能和耐用性.

主要方法:

使用控制颗粒大小的CeO2纳米粒子和微晶纤维素 (MCC) 制造MPL.
填充结构的界面兼容性和毛孔大小分布的表征.
使用优化MPL的膜电极组件 (MEAs) 的组装和电化学测试.

主要成果:

优化的MPL显著改善了界面兼容性和量身定制的孔径分布.
与MPL一起的MEAs显示电化学活性表面积 (ECSA) 增加了2.8倍.
实现了高电流密度 (4.58 A cm−2 在 2.0 V) 与超低的 Ir 负载 (48.4 μg cm−2) 和稳定的运行 (> 200 h).

结论:

CeO2/MCC MPL有效地解决了PEMWE中的接口挑战.
这一战略使得高性能的PEMWE能够显著降低贵金属含量.
为具有成本效益和高效的水电解技术提供了一个有前途的途径.

关键词:

纳菲安阵列是一个Nafion阵列.在PEM中,水分是水分.已经订购了MEA.氧化物填充填充氧化物孔隙的运输层是一种多孔的运输层.

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