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通过优化膜电极组件和原型的协同集成,实现成本效益的被动氨燃料电池

Xin Ou-Yang¹, Jun-Yu Wu¹, Zhao-Hui Wang¹

¹Key Laboratory of Automobile Materials, Ministry of Education, School of Materials Science and Engineering, Jilin University, Changchun, 130022, China.

Advanced materials (Deerfield Beach, Fla.)

|November 6, 2025

概括

这项研究开发了先进的非贵金属催化剂和被动氨燃料电池 (PAFC) 的材料,实现了创纪录的性能和稳定性. 新设计显著提高了功率密度和耐用性,以实现经济高效的能源转换.

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
能源转换能源转换

背景情况:

被动氨燃料电池 (PAFC) 提供模块化,但受到低功率密度和依赖昂贵的贵金属催化剂的限制.
开发具有成本效益和高性能的催化剂对于推进PAFC技术至关重要.

研究的目的:

通过采用协调材料和系统设计策略来解决PAFCs的局限性.
为了增强氨氧化反应 (AOR) 动力学,并提高利用非贵金属元件的催化剂稳定性.

主要方法:

在阳极的预氧化基板上制造β-NiOOH/Ni3P异质接口.
开发一种具有螺旋结构的MnCo2O4/C阴极催化剂,具有增强的氨耐受性.
引入PTFE/LDH复合膜以最大限度地减少氨交叉.
将优化的组件集成到石墨原型PAFC中.

主要成果:

在0.7V的阳极AOR时,达到171mA cm-2的高电流密度.
与Pt/C相比,MnCo2O4/C阴极表现出优越的稳定性.
集成系统达到创纪录的峰值功率密度 (PPD) 61 mW cm-2和0.87V的开放电路电压 (OCV).
经证明稳定放电9小时与氨补充.

结论:

协同的多相优化策略使非贵金属PAFCs的高性能成为可能.
这项工作为具有成本效益的PAFCs建立了一个可行的原型到性能路径.
强调非贵金属催化剂在氨电化学能量转换方面的巨大潜力.

关键词:

氨的交叉方式氨交叉方式氨氧化反应是氨的氧化反应.氨的耐受性氨的耐受性被动氨燃料电池是一种被动氨燃料电池.工程的先驱工程的前身.

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