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针对质子交换膜燃料电池的耐用金属-N-C催化剂的近期进展

Hao-Ran Wu¹, Miao-Ying Chen¹, Wei-Dong Li¹

¹College of Materials Science and Engineering, Zhengzhou University, 450001, Zhengzhou, P. R. China.

Chemistry, an Asian journal

|November 15, 2023

概括

本综述探讨了燃料电池中氧降解反应的金属--碳 (M-N-C) 催化剂. 它详细介绍了降解机制和策略,以提高这些关键的低成本催化剂的稳定性.

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
催化剂是一种催化剂.

背景情况:

质子交换膜燃料电池 (PEMFC) 需要低成本,活跃和稳定的氧减少反应 (ORR) 催化剂.
组无金属 (无PGM) 金属--碳 (M-N-C) 催化剂,特别是Fe-N-C,显示出希望,但缺乏足够的稳定性.

研究的目的:

了解M-N-C ORR催化剂的结构稳定性关系.
为设计耐用的M-N-C催化剂提供指导.
审查提高非贵金属催化剂稳定性的战略.

主要方法:

讨论固有的降解机制 (碳腐蚀,脱金属化,H2O2攻击).
研究减轻催化剂恶化的策略.
分析增强碳抗氧化,M-N键强化和自由基清除的方法.

主要成果:

确定了影响M-N-C催化剂稳定性的关键降解途径.
概述了通过解决特定故障模式来提高催化剂耐用性的策略.
强调了合理设计用于长期使用的无PGMORR催化剂的重要性.

结论:

对降解机制的彻底理解对于开发稳定的M-N-C催化剂至关重要.
专注于碳支持,金属协调和激素管理的战略可以显著提高催化剂的寿命.
本综述提供了对提高非贵金属催化剂稳定性的前性展望,以广泛应用PEMFC.

关键词:

降解机制的降解机制燃料电池是一种燃料电池.在M−N−C催化剂.氧降解反应是氧降解反应.稳定的稳定性稳定的稳定性

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