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Proton exchange membrane fuel cell degradation model based on catalyst transformation theory
Author(s) -
Ao Yunjin,
Chen Kui,
Laghrouche Salah,
Depernet Daniel
Publication year - 2021
Publication title -
fuel cells
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.485
H-Index - 69
eISSN - 1615-6854
pISSN - 1615-6846
DOI - 10.1002/fuce.202100002
Subject(s) - proton exchange membrane fuel cell , catalysis , degradation (telecommunications) , durability , materials science , dissolution , chemical engineering , transformation (genetics) , membrane , platinum , particle (ecology) , process engineering , computer science , chemistry , composite material , engineering , organic chemistry , telecommunications , biochemistry , oceanography , gene , geology
Durability is a severe problem in the commercial application of proton exchange membrane fuel cell (PEMFC). The platinum (Pt) catalyst which greatly affects performance and durability is one of the most important components in PEMFC. However, few PEMFC degradation models focused on the Pt catalyst degradation process in molecule scale. In this paper, a novel PEMFC catalyst degradation model is developed based on the catalyst transformation theory. In this model, the Pt catalyst degrades by changing form and size according to the transformation theory, which includes Pt dissolution and Ostwald ripening mechanisms. The advantage of this new model is that the transformation of every Pt particle is calculated directly, and the characteristics of every particle are considered, thus it can give more accurate catalyst degradation process. Six groups of experimental data have been used to validate the effectiveness of the proposed degradation model of PEMFC. Furthermore, the accuracy of the proposed degradation model is superior to a traditional model, and the application of such a degradation model to the performance prediction of the PEMFC has been discussed.