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静电景观设计用于燃料电池中的离子体粘附和耐毒催化

Lei Huang^1,2, Huiting Niu¹, Zifan Tan³

¹State Key Laboratory of New Textile Materials and Advanced Processing, Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China.

Angewandte Chemie (International ed. in English)

|October 30, 2025

概括

在纳米碳支上设计一种新的静电景观,可以防止质子交换膜燃料电池 (PEMFC) 中位的离子体中毒. 这提高了催化剂的性能和耐用性,以实现高效的能量转换.

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
催化剂是一种催化剂.

背景情况:

质子交换膜燃料电池 (PEMFC) 对于清洁能源至关重要,但它们的效率受到 (Pt) 催化剂中毒和质量运输不佳的限制.
离子体分布不均和硫酸盐群 (-SO3-) 与 Pt 位点的相互作用阻碍了催化剂的利用和性能.

研究的目的:

开发一种催化剂接口设计,防止离子体中毒,并改善PEMFCs中的质量运输.
设计纳米碳支持与定制的静电景观,以增强离子体粘附和Pt站点保护.

主要方法:

制造具有设计静电性能的纳米碳支持.
在功能化纳米碳 (FN-C) 支上合成-铁 (PtFe) 纳米粒子.
催化剂结构,离子体分布和PEMFC中的电化学性能的表征.

主要成果:

设计的PtFe/FN-C催化剂表现出均的离子体粘附,覆盖率仅为6.4%.
达到1.39W cm−2的峰值功率密度和低氧气运输阻力 (44.5s m−1).
在0.8 A cm-2.2的30,000个周期后,表现出极好的耐用性,电压损失最小 (2 mV).

结论:

在纳米碳支上的静电景观设计有效地减轻了硫酸盐组对Pt的中毒.
增强的离子体附着性提高了活体部位的可访问性和局部质量运输,从而提高了PEMFC的性能.
这种接口工程原理为开发用于能量转换的耐毒电催化剂提供了总体策略.

关键词:

电触媒溶解是一种电触媒.静电调制是一种静电调制.燃料电池燃料电池的使用情况.离子体分布离子体分布氧降解反应是氧降解反应.

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