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在PtCoIn@Pt核心外催化剂中强大的p-d轨道合,用于持久的质子交换膜燃料电池

Lei Zhao^1,2, Zhaozhao Zhu¹, Junjie Wang¹

¹School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, 611731, P.R. China.

Angewandte Chemie (International ed. in English)

|March 5, 2025

概括

一个新的L10-PtCoIn@Pt核心外催化剂与兴奋剂增强了.

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:

基于的催化剂对燃料电池至关重要,但在恶劣条件下遭受降解.
催化剂的原子迁移和溶解导致性能下降.

研究的目的:

开发一种具有增强活性和耐久性的新型核心催化剂.
调查兴奋剂对-合金催化剂的影响.

主要方法:

合成L10-PtCoIn@Pt核心外催化剂. 这是一个很好的方法.
在H2-O2燃料电池中进行电化学测试.
通过潜在的循环进行耐用性评估.
理论研究 (DFT) 了解电子结构的修改.

主要成果:

L10-PtCoIn@Pt表现出了显著的活性和耐久性,在120,000个循环后,质量活动损失仅为5.1%.
在H2-O2燃料电池中实现了1.99W cm-2的峰值功率密度,并保持了高质量活性.
超过了美国能源部2025年的耐用性和性能目标.

结论:

兴奋剂优化了的电子结构,并诱导了晶格应变,提高了催化剂的性能.
催化剂的稳定性归因于调制的电子结构和增加的空隙形成能量.
这种新的催化剂设计为先进的燃料电池技术提供了一个有前途的途径.

关键词:

耐用性耐用性耐用性电催化剂是一种电催化剂.氧降解反应是氧降解反应.质子交换膜燃料电池的燃料电池是什么在 P-d 轨道合中,

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