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泄露后诱导的快速微气泡脱离在基于和铁的OER催化剂上,用于高效的AEM-WE

Shiwen Ding^1,2, Zhiheng Li¹, Gaoxin Lin¹

¹Center of Artificial Photosynthesis for Solar Fuels and Department of Chemistry, School of Science and Research Center for Industries of the Future, Westlake University, Hangzhou, Zhejiang, 310030, China.

Angewandte Chemie (International ed. in English)

|October 22, 2025

概括

-铁催化剂的修饰提高了水电解剂中的氧演化反应 (OER) 效率. 这通过优化气泡脱离和质量运输来改善绿色的生产,从而实现持久,高性能的催化.

科学领域:

电化学电化学电化学
材料科学材料科学材料科学
绿色能源绿色能源

背景情况:

有效且持久的氧化演化反应 (OER) 催化剂对于离子交换膜水电解剂 (AEM-WE) 非常重要.
AEM-WE对于使用可再生能源生产绿色气至关重要.
优化大众运输和催化剂稳定性是OER的关键挑战.

研究的目的:

为了研究 (Se) 修改对铁层双氧化物 (NiFe) OER催化剂的影响.
了解Se如何影响微泡形成和脱离,以改善大众运输.
在AEM-WE中评估Se修饰的NiFe催化剂的性能和耐用性.

主要方法:

用 (NiFeSe) 合成铁层的双氧化物基催化剂.
OER性能的电化学表征,包括1M KOH的超电位和耐久性测试.
评估微泡动力学和大众运输效应.
在实用的离子交换膜水电解器 (AEM-WE) 装置中测试催化剂.

主要成果:

改性增强了表面粗性,并促进了较小的氧气泡迅速脱离.
NiFeSe催化剂在1000 mA cm-2下达到190 mV的低超电位,在1 M KOH下持久超过2000小时.
在实际的AEM-WE中,催化剂在2.0V时达到8800mA cm-2并连续运行超过3000小时在1000mA cm-2.2下.
诱导的微泡动力学显著改善了质量传输和催化效率.

结论:

改性是开发先进的OER催化剂的一个有希望的策略.
优化微泡形成和分离对于增强AEM-WE中的质量运输至关重要.
NiFeSe催化剂在工业绿色生产中表现出高效率和耐用性.

关键词:

阳离子交换膜水电解器大众运输是大众运输.尼弗尼斯 (NiFeSeSe) 是一种金属.有氧气泡的气泡.氧的演化反应反应的反应.

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