Microscratch Analysis and Interfacial Toughness of Catalyst Coating on Electrolyte Polymer in Micro Fuel Cells

Gyu Jei Lee; Han Kyu Lee; Dong Il Kwon

doi:10.4028/www.scientific.net/SSP.124-126.1633

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The Effects of Si and Deformation on the Phase Transformation in Dual Phase Steels
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Characteristics of 2.45GHz Microwave Plasma by Langmuir Probe Measurements
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An Ab Initio Study of the Energies of Coherent Interfaces Formed between bcc Iron and Carbides or Nitrides of Transition Metals
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Competing Ion Effect of Stabilization by Cr(III) & Cr(VI) in Ettringite Crystal Structure
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Microscratch Analysis and Interfacial Toughness of Catalyst Coating on Electrolyte Polymer in Micro Fuel Cells
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Characterization of Anisotropic and Irregularly-Shaped Materials by High-Sensitive Thermal Conductivity Measurements
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Cooling and Heating Characteristics of Ti-Ni Based Shape Memory Alloy Wire Actuators
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HomeSolid State PhenomenaSolid State Phenomena Vols. 124-126Microscratch Analysis and Interfacial Toughness of...

Microscratch Analysis and Interfacial Toughness of Catalyst Coating on Electrolyte Polymer in Micro Fuel Cells

Abstract:

This study combined microscratch test and fracture-mechanical analysis to assess the interfacial reliability of Nafion and Pt/Ru catalyst layers in micro fuel cells. Scratch test was used to determine the critical load for interfacial failure, while fracture-mechanical analysis was used to quantify the adhesion between Nafion (the electrolyte polymer substrate) and Pt/Ru alloy (catalyst coating). We also proposed a key of solving ambiguous problems in indentation cracking test by determining geometric information from crack propagation and critical points, as for a hard porous coating on a soft substrate. A comparative analysis of three coating methods, spray, decalcomania and their mixed process, was done to assess the validity of our new method.

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Periodical:

Solid State Phenomena (Volumes 124-126)

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1633-1636

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https://doi.org/10.4028/www.scientific.net/SSP.124-126.1633

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Online since:

June 2007

Authors:

Gyu Jei Lee, Han Kyu Lee, Dong Il Kwon

Keywords:

DMFC, Failure Mechanism, Interfacial Toughness, Microscratch, Polymer Substrate

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