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   Articles with "catalyst layers" as a keyword



Characterization of Thermal and Electronic Conductivities of Catalyst Layers of Polymer Electrolyte Membrane Fuel Cells

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recommendations! Published in 2019 at "Fuel Cells"

DOI: 10.1002/fuce.201800173

Abstract: This work proposes new and accurate systematic methodologies for ex situ measurements of through-plane thermal and in-plane electronic conductivities of catalyst layers (CLs) of polymer electrolyte membrane fuel cells (PEMFC). The developed methods are based… read more here.

Keywords: fuel cells; catalyst layers; fuel; electronic conductivities ... See more keywords

Ultra-low Pt loading catalyst layers prepared by pulse electrochemical deposition for PEM fuel cells

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recommendations! Published in 2017 at "Journal of Applied Electrochemistry"

DOI: 10.1007/s10800-017-1071-4

Abstract: We report the production of efficient, ultra-low Pt loading catalyst layers on fuel cell electrodes via pulse potential deposition (PPD) from a H2Pt(OH)6 plating solution. We show that by optimizing the off time in the… read more here.

Keywords: ultra low; catalyst layers; low loading; deposition ... See more keywords

Physical Modeling of the Proton Density in Nanopores of PEM Fuel Cell Catalyst Layers

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recommendations! Published in 2017 at "Electrochimica Acta"

DOI: 10.1016/j.electacta.2017.05.052

Abstract: Abstract In polymer electrolyte fuel cells, a foremost goal is to design catalyst layers with high performance at markedly reduced platinum loading. As a contribution towards this objective, we explore a simplified pore geometry to… read more here.

Keywords: density; catalyst layers; fuel; proton density ... See more keywords

Progress report on the catalyst layers for hydrocarbon-fueled SOFCs

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recommendations! Published in 2021 at "International Journal of Hydrogen Energy"

DOI: 10.1016/j.ijhydene.2021.09.198

Abstract: Abstract Solid oxide fuel cell (SOFC) is an energy conversion device that can directly convert the chemical energy of carbonaceous fuels into electricity. Solving the problem of carbon deposition in the conventional nickel-based anode is… read more here.

Keywords: progress; hydrocarbon fueled; catalyst layers; catalyst ... See more keywords

Modelling analysis of low platinum polymer fuel cell degradation under voltage cycling: Gradient catalyst layers with improved durability

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recommendations! Published in 2018 at "Journal of Power Sources"

DOI: 10.1016/j.jpowsour.2018.09.092

Abstract: Abstract Improving the durability of polymer electrolyte membrane fuel cells with low platinum loading is a crucial step in the development of next generation electric vehicles. In this work a simplified model of nanoparticle growth… read more here.

Keywords: degradation; catalyst layers; durability; catalyst ... See more keywords

Controlling cracking formation in fuel cell catalyst layers

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recommendations! Published in 2019 at "Journal of Power Sources"

DOI: 10.1016/j.jpowsour.2019.02.058

Abstract: Abstract Since cracks in catalyst layers of a fuel cell affect performance and durability, it is important to obtain the factors that control crack formation. Cracking characteristics are likely to differ due to the formation… read more here.

Keywords: formation; catalyst; catalyst inks; fuel cell ... See more keywords
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Probing the Dynamics of Platinum Surface Oxides in Fuel Cell Catalyst Layers Using in Situ X-ray Diffraction

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recommendations! Published in 2019 at "ACS Applied Energy Materials"

DOI: 10.1021/acsaem.9b00982

Abstract: The processes leading to degradation of Pt nanoparticles inside commercial hydrogen fuel cell catalyst layers are studied in situ, using time-resolved high-energy powder X-ray diffraction. Advances in electrochemical cell design significantly increase the quality of… read more here.

Keywords: fuel cell; diffraction; catalyst layers; cell ... See more keywords

Quantification on Degradation Mechanisms of Polymer Electrolyte Membrane Fuel Cell Catalyst Layers during an Accelerated Stress Test

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recommendations! Published in 2018 at "ACS Catalysis"

DOI: 10.1021/acscatal.8b00002

Abstract: The long-term durability of the catalyst layers of a low-working temperature fuel cell such as a polymer electrolyte membrane fuel cell (PEMFC) is of significant scientific interest because of their operation criteria and high initial… read more here.

Keywords: fuel cell; loss; catalyst layers; catalyst ... See more keywords

Review of ionomers in catalyst layers of proton exchange membrane (PEM) modules: key parameters, characterization and manipulation methods

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recommendations! Published in 2024 at "International Journal of Green Energy"

DOI: 10.1080/15435075.2024.2335507

Abstract: ABSTRACT Ion-conducting polymers (Ionomers) are critical in catalyst layers (CLs) of proton exchange membrane (PEM) fuel cells and water/vapor-fed electrolyzers, serving essential roles in proton conduction, electronic insulation, and water absorption. This review summarized the… read more here.

Keywords: ionomer; pem; pem modules; proton exchange ... See more keywords

Mitigating Crack Formation When Using High Oxygen Permeability Ionomer in PEMFC Catalyst Layers

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recommendations! Published in 2025 at "Journal of The Electrochemical Society"

DOI: 10.1149/1945-7111/adb5c8

Abstract: High oxygen permeability ionomers (HOPIs) are being developed as an alternative to conventional perfluorosulfonic (PFSA) ionomers for cathodes in proton exchange membrane fuel cells (PEMFCs). HOPIs aim to reduce local oxygen transport resistance, improving performance… read more here.

Keywords: high oxygen; crack formation; catalyst; oxygen ... See more keywords