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- Title
高精度无损质子交换膜燃料电池膜电极Pt载量与分布测试方法.
- Authors
段 骁; 曹 锋; 周 扬; 张 斌; 董蔚雯; 魏伶俐; 李 佳; 刘建国
- Abstract
As the commercialization of proton exchange membrane fuel cells advances, non-destructive high-precision online inspection of Pt loading and distribution is needed in order to improve the reproducibility and product control of membrane electrode assemblies (MEA) fabrication. According to Joule's law and Ohm's law, the MEA resistance can be analyzed by using the heat distribution and current density signals generated under a DC excitation voltage. The inverse correlation between MEA resistance and Pt loading is demonstrated by current testing at different DC excitation voltages, and the accuracy of the non-destructive quantitative characterization of Pt loading is 0.0008~0.0025 mg/cm2. The qualitative analysis of Pt loading distribution is successfully achieved by collecting thermal distribution information of MEA under DC excitation voltage using infrared thermography. Finally, comparison of MEA performance before and after DC excitation demonstrates that the method is non-destructive to membrane electrode performance. This method can improve the quality and manufacturing efficiency of MEA and reduce the cost of MEA manufacturing, which is of great significance to the large-scale commercialization of proton exchange membrane fuel cells.
- Subjects
PROTON exchange membrane fuel cells; OHM'S law; ELECTRODE performance; CURRENT distribution; INVERSE relationships (Mathematics)
- Publication
Chinese Journal of Applied Chemistry, 2023, Vol 40, Issue 6, p845
- ISSN
1000-0518
- Publication type
Article
- DOI
10.19894/j.issn.1000-0518.220379