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高性能无离子体无气体扩散阴极,具有较低的Pt负载,用于质子交换膜水电解

Mingliang Chen¹, Peter M Piechulla¹, Alexandros Mantzanas¹

¹Department of Chemical Engineering, Delft University of Technology, 2629 HZ Delft, The Netherlands.

Communications materials

|February 20, 2026

概括

这项研究通过精确控制 (Pt) 纳米粒子合成来增强质子交换膜水电解 (PEMWE). 这种方法显著提高了Pt利用率和催化活性,以有效生产气.

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:

是酸性介质中演化反应 (HER) 的关键催化剂.
它在质子交换膜水电解 (PEMWE) 中的活性通常受到阴极催化剂利用率差的限制.
优化纳米颗粒的合成和分布对于提高PEMWE效率至关重要.

研究的目的:

在PEMWE的微孔层涂层气体扩散层上以原子精度合成和表征纳米颗粒.
为了评估具有低负载的开发电极的催化性能和稳定性.
为了证明与基准金催化剂相比,质量活性和耐久性得到了提高.

主要方法:

原子层沉积 (ALD) 用于精确合成纳米粒子.
气体扩散电极的特征与控制的白金负载和颗粒大小.
在各种操作条件下进行质子交换膜水电解的性能测试.

主要成果:

开发的电极实现了极低的负荷 (1.08-5.40 μg cm-2).
证明了至少一个数量级高于基准金催化剂的质量活动.
在1 A cm-2下,在200小时内表现出卓越的稳定性,在动态电压循环下表现出强大的性能.

结论:

纳米颗粒的原子精度合成显著提高了PEMWE中的催化剂利用率和活性.
开发的电极为经济高效的水电解提供了一个有前途的途径.
这种方法通过优化的应用来解决PEMWE中的催化潜力的低估问题.

关键词:

能是气的能源.纳米颗粒纳米颗粒

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