Pulse electrodeposited cathode catalyst layers for PEM fuel cells

Egetenmeyer, A.; Radev, Ivan; Durneata, Dan; Baumgärtner, M.; Peinecke, Volker; Natter, Harald; Hempelmann, Rolf

doi:10.1016/j.ijhydene.2017.01.212

Cited by 22 publications

(15 citation statements)

References 47 publications

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“…Plasma treatment prior to catalyst deposition were proven to have beneficial effects on the cathode performance. 20 Investigations showed that plasma partially destroys the PTFE coating in the membrane electrode assembly, ensuring a thin hydrophilic layer which enables proper Pt electrodeposition at the catalyst layer and preserves the humidity of the membrane. Since plasma treating occurs on the material surface and is easily controllable, the rest of the microporous layers remains hydrophobic.…”

Section: Resultsmentioning

confidence: 99%

P-containing coated carbons from phosphonium ionic liquids as catalyst supports for fuel cell applications

Severin

Rauber

Philippi

et al. 2023

Sustainable Energy Fuels

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Section: Resultsmentioning

confidence: 99%

P-containing coated carbons from phosphonium ionic liquids as catalyst supports for fuel cell applications

Severin

Rauber

Philippi

et al. 2023

Sustainable Energy Fuels

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“…abs. These operation parameters in the 25 cm 2 test cell aim to ensure a stable and representative PEMFC hardware operation and also to reproduce the similar operation conditions based on the stoichiometry calculations of 25 cm 2 central situated segment of an automotive MEA with an area of 10 × 30 cm 2 operating at stoichiometry of 2 . It should be noted that the cathodes are tested also at stoichiometry of 3 but the performance is not satisfactory.…”

Section: Methodsmentioning

confidence: 99%

Investigation of Carbon Nanofiber‐supported Electrocatalysts with Ultra‐low Platinum Loading for the Use in PEM Fuel Cells

et al. 2018

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The present study aims to investigate gas diffusion electrodes with ultra‐low platinum loading and increased durability, prepared by pulsed electrodeposition process, applicable for polymer electrolyte membrane fuel cells (PEMFC). Testing was performed both, in situ in a PEMFC test bench while prepared GDEs were compared to anodes and cathodes with commercially available catalysts by Johnson Matthey (JM), as well as ex situ regarding electrochemical properties and catalyst layer structure. High and stable performance of developed electrodes was achieved, while the Pt catalyst loading of investigated anodes and cathodes was reduced to 10 µgPt cm−2. The catalyst deposition was achieved via pulsed electrodeposition process from H2PtCl6‐containing electrolyte on an oxygen plasma‐pretreated corrosion‐stable carbon nanofiber (CNF) support. In situ performance tests show a similar operation behavior of the compared anodes, while activation losses of investigated cathodes are high due to the limited amount of catalyst material. However, Pt/CNF_c cathodes show significantly higher power densities than cathodes prepared with JM catalyst. Membrane electrode assemblies containing developed Pt/CNF_a anodes with 10 µgPt cm−2 reached a power density of 0.525 W cm−2 at a cell potential of 0.65 V, which was similar to anodes with commercially available HiSPEC 2000 catalysts by JM. Accelerated stress tests (AST) revealed that Pt/CNF_a anodes preserve their performance, whereas the commercial catalyst degraded severely. Cyclic voltammetry (CV) indicated a high electrochemical active surface area of Pt/CNF_a anodes. Moreover, the electrode characteristics, analyzed via electrochemical impedance spectroscopy after AST, showed marginal anode degradation.

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“…Egetenmeyer et al [64] investigated electrodeposition of cathode catalyst layer using the plasma process. At different catalyst loadings and plasma durations, nanostructured Pt and Pt3Co cathodes were prepared with varying quantity of ionomer and its distribution in the cathode catalyst layer (CCL).…”

Section: Optimization Of Catalyst Parametersmentioning

confidence: 99%

Platinum utilization in proton exchange membrane fuel cell and direct methanol fuel cell - Review

Bandapati

Goel

Krishnamurthy

2019

J. Electrochem. Sci. Eng.

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<p class="PaperKeywordTitle"><span lang="EN-US">Proton exchange membrane fuel cell (PEMFC) and direct methanol fuel cell (DMFC) are increasingly used as substitutes to conventional energy systems. Their compact design, high energy density and efficient energy-conversion offer several advantages over existing energy systems with potential for use in a variety of applications. However, performance, robustness and cost are the key challenges to overcome before fuel cells can be commercialized. Even though the use of platinum (Pt) and platinum group metal (PGM) alloy catalysts provide higher performance and durability, they are at the same time the largest cost components which need to be addressed. This paper reviews different approaches adopted to enhance Pt utilization such as reducing Pt loading, decreasing Pt particle size, developing Pt free metallic alloy catalyst, improving Pt dispersion, developing membrane electrode assembly (MEA) fabrication methods, increasing mass-transport at the electrode surface and modifying the catalyst support materials. Finally, the performance optimization efforts for Pt utilization are summarized with insights into probable directions of future research in this area.</span></p>

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Pulse electrodeposited cathode catalyst layers for PEM fuel cells

Cited by 22 publications

References 47 publications

P-containing coated carbons from phosphonium ionic liquids as catalyst supports for fuel cell applications

P-containing coated carbons from phosphonium ionic liquids as catalyst supports for fuel cell applications

Investigation of Carbon Nanofiber‐supported Electrocatalysts with Ultra‐low Platinum Loading for the Use in PEM Fuel Cells

Platinum utilization in proton exchange membrane fuel cell and direct methanol fuel cell - Review

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