料浆I/C比对PEMFC合金催化剂氧传质阻力的影响规律

doi:10.11896/cldb.23010027

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Abstract Oxygen transport resistance has an important effect on fuel cell performance, and the magnitude of this resistance is also closely related to the I/C ratio of the slurry formulation and the catalyst type. In this work, the limiting current method was used to analyze the variation pattern of oxygen transport resistance of fuel cells by studying the effect of different I/C ratios on the performance of different types of low loading alloy catalysts. The test results show that although the electrocatalytic activity of alloy catalysts is higher than that of pure Pt catalysts (PtCo/C > PtRu/C > Pt/C), the I/C ratio variation has a more critical effect on the cell performance: PtRu/C catalysts have the lowest limit current density and the oxygen transport capacity is most severely affected by the I/C ratio, followed by PtCo/C, and Pt/C catalysts have the least affected. Correspondingly, the cell performance of the three catalysts is Pt/C≈PtCo/C>PtRu/C in order.

Key words： I/C ratio alloy catalyst oxygen transport resistance fuel cell

Published: 25 July 2024 Online: 2024-08-12

CLC number:

TM911.42

Fund:National Natural Science Foundation of China (21975192), the National Defense Basic Research Program (JCKY2020206B507) and Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory (XHD2022-002).

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	XIE Yuqiu
	GUO Wei

Cite this article:

XIE Yuqiu,GUO Wei. Influence of Slurry I/C Ratio on Oxygen Transfer Resistance of PEMFC Alloy Catalyst[J]. Materials Reports, 2024, 38(14): 23010027-5.

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http://www.mater-rep.com/EN/10.11896/cldb.23010027 OR http://www.mater-rep.com/EN/Y2024/V38/I14/23010027

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