一个Pt/C催化剂层的不对称设计,以提高质子交换膜燃料电池的性能
Jinqi Li1,2, Weikang Zhu1,2, Yuankai Shao1,2
1National Engineering Laboratory for Mobile Source Emission Control Technology, China Automotive Technology & Research Center Co., Ltd Tianjin 300300 China lizhenguo@catarc.ac.cn zhuweikang@catarc.ac.cn.
RSC advances
|November 28, 2025
概括
这项研究揭示了催化剂特性如何影响质子交换膜燃料电池 (PEMFCs). 优化的催化剂和电极设计提高了性能,达到2.52W cm-2,对于先进的燃料电池应用至关重要.
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
- 化学工程是化学工程的重要组成部分.
背景情况:
- 质子交换膜燃料电池 (PEMFCs) 对清洁能源至关重要,但它们的效率严重取决于催化剂特性.
- 了解催化剂结构和性能之间的复杂相互作用是优化PEMFC系统的挑战.
研究的目的:
- 系统地评估不同Pt/C催化剂形态对PEMFC性能的影响.
- 在PEMFC中建立结构-性能关系,用于先进的催化剂设计.
- 为催化剂选择和电极架构提供实用见解.
主要方法:
- 评估了三种具有不同微观结构的商业Pt/C催化剂.
- 分析催化剂对阳极 (氧化反应 - HOR) 和阴极性能的影响.
- 使用优化的组件制造和测试一个不对称的膜电极组件 (MEA).
主要成果:
- 丰富的微孔和小的Pt纳米粒子增强了阴极催化活性.
- 在阳极上的氧化反应 (HOR) 受到碳支的活性位点的青.
- 一个优化的不对称的MEA实现了2.52 W cm-2的峰值功率密度,H2和O2.
结论:
- 催化剂微观结构,特别是微孔性和Pt纳米粒子大小/分布,显著影响PEMFC性能.
- 催化剂和电极架构的协同优化改善了活跃站点利用率和质量转移.
- 这项研究为设计用于PEMFCs的高性能Pt/C催化剂和电极提供了基本的见解.
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