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在质子交换膜水电解中对抗动态运行与荷兰石类型的IrRuO_x阳极纳米催化剂_x

Wei An¹, Mingcheng Zhang¹, Muhan Na¹

¹State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, China.

Advanced materials (Deerfield Beach, Fla.)

|March 13, 2026

概括

新的荷兰结构的氧化物 (IrRuO_x) 纳米晶体改善了质子交换膜水电解. 这种持久的催化剂在动态运行条件下提高生产效率和稳定性.

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:

基于 (IrRu) 的阳极的运行不稳定性阻碍了经济高效的质子交换膜水电解 (PEMWE).
在可再生能源整合中常见的动态运行模式加剧了阳极退化.
现有的催化剂面临过度氧化和金属溶解的挑战,限制了长期的性能.

研究的目的:

为PEMWE设计和合成一种基于IrRu的新型阳极催化剂,提高耐用性和活性.
研究荷兰类型IrRuO_x纳米晶体在稳定催化场所的结构效益.
为了评估催化剂在工业电流密度和动态循环条件下的性能.

主要方法:

低温相位过渡合成以创建荷兰结构的IrRuO_x纳米晶体 (H-IrRuO_x).
将H-IrRuO_x集成到膜电极组件 (MEA) 中,用于PEMWE测试.
电化学表征,包括高电流密度的长期稳定性测试和动态循环协议.

主要成果:

荷兰的结构稳定了sub-4-valent金属位点,增强了氧演化反应 (OER) 活性.
H-IrRuO_x表现出卓越的耐用性,在1-2 A cm^-2稳定运行,电压衰减率<4 μV h^{-1>超过3700 h.}
催化剂在36000次动态循环后保持了96%的初始活动,明显超过了传统基准.

结论:

结构工程的IrRuO_x到荷兰的框架有效地抑制金属溶解和过氧化.
H-IrRuO_x为高活性和耐用阳极提供了一条可行的途径,用于成本效益高的生产.
这种方法为推进PEMWE技术在现实的运营需求下提供了一个有前途的战略.

关键词:

动态运行的动态操作和的价值观和的价值观氧气进化反应反应氧气进化反应鲁是的元素之一.水的电解是水的电解.

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