Simultaneous in situ measurements and numerical analysis of mass transfer in polymer electrolyte fuel cell electrode slurries during drying

Suzuki, Tsuneo; Nagai, Tatsuaki; Tsushima, Shohji

doi:10.1299/jtst.2021jtst0012

Cited by 4 publications

(2 citation statements)

References 29 publications

(41 reference statements)

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“…This is in agreement with previous studies, which have suggested that agglomerates can trigger crack generation [10,14]. An increase in the coating thickness of the catalyst ink also causes crack formation [14,15]. However, since the thickness of both catalyst layers was almost the same as 7-8 µm, the effect of coating thickness can be negligible in this study.…”

Section: Resultssupporting

confidence: 93%

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Reaction Products Affecting the PEFC Catalyst Ink Property

Uemura

Sasabe

Sakai

et al. 2021

J. Electrochem. Soc.

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Catalyst ink is a key material of the catalyst layer in a proton exchange membrane fuel cell, but can be degraded as the reactions of alcohols are promoted by Pt in the ink. The present study quantitatively determined the concentrations of reaction products in an ethanol/water-based catalyst ink, and the effects of these substances on the ink and catalyst layer were investigated. The acetaldehyde concentration was found to be the key factor, as acetaldehyde caused particle agglomeration in the catalyst ink and micro-scale crack formation in the catalyst layer.

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Section: Resultssupporting

confidence: 93%

“…10,14 An increase in the coating thickness of the catalyst ink also causes crack formation. 14,15 However, since the thickness of both catalyst layers was almost the same as 7-8 μm, the effect of coating thickness can be negligible in this study.…”

Section: Resultsmentioning

confidence: 88%