Analysis of Pt Catalyst Degradation of a PEFC Cathode by TEM Observation and Macro Model Simulation

Tomohiro Takeshita; Hajime Murata; Tatsuya Hatanaka; Yu Morimoto

doi:10.1149/1.2981871

journal article Oct 03, 2008

Analysis of Pt Catalyst Degradation of a PEFC Cathode by TEM Observation and Macro Model Simulation

Tomohiro Takeshita Hajime Murata Tatsuya Hatanaka Yu Morimoto

ECS Transactions Vol. 16 No. 2 pp. 367-373 · The Electrochemical Society

View at Publisher Save 10.1149/1.2981871

Abstract

Pt particle size distributions at various positions in a cathode catalyst layer were evaluated by transmission electron microscopy (TEM) observation before and after a potential cycling test and by simple 1D macro model simulation to describe the degradation phenomena. Both the results showed similar tendencies: at the position near the membrane, the number of Pt particles for all sizes decreased with time; in contrast, at the position near the gas diffusion layer (GDL), the number of large Pt particles increased. The validity of this model is not verified yet because the precision of parameters is not confirmed. This model, however, can be used as a tool for deeper understanding of Pt degradation.

Topics

No keywords indexed for this article. Browse by subject →

Metrics

18

Citations

0

References

Details

Published: Oct 03, 2008
Vol/Issue: 16(2)
Pages: 367-373
License: View

Authors

Cite This Article

Tomohiro Takeshita, Hajime Murata, Tatsuya Hatanaka, et al. (2008). Analysis of Pt Catalyst Degradation of a PEFC Cathode by TEM Observation and Macro Model Simulation. ECS Transactions, 16(2), 367-373. https://doi.org/10.1149/1.2981871

Analysis of Pt Catalyst Degradation of a PEFC Cathode by TEM Observation and Macro Model Simulation

You May Also Like