Barely Significant
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Nanostructured Catalyst Layer Allowing Production of Ultralow Loading Electrodes for Polymer Electrolyte Membrane Fuel Cells with Superior Performance.

ACS Appl Energy Mater · 2023 · PMC10751738 · PMID 38155874

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quite significantno p-value reported
However, this effect is different from the “pure” contact resistance effect (which is independent of layer thickness) and becomes quite significant when catalyst layers become ultrathin or when contact points to the catalyst layer increase in separation due to a less smooth MPL or lower compression.

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