Effective factors improving catalyst layers of PEM fuel cell

Avcioglu, Gökçe S.; Fıçıcılar, Berker; Eroğlu, İnci

doi:10.1016/j.ijhydene.2017.12.055

Cited by 19 publications

(13 citation statements)

References 168 publications

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“…Various kinds of additives, such as hydrophobic agents, − carbon materials, , and pore formers, have been employed to improve the mass transfer limitations of conventional catalyst layers. Hydrophobic agents are used in the catalyst layer to improve water management.…”

Section: Strategies Used To Improve the Performance Of Real-life Fuel...mentioning

confidence: 99%

“…Hydrophobic agents are used in the catalyst layer to improve water management. Dimethyl silicon oil (DSO), ,, PDMS, fluorinated ethylene propylene (FEP), and PTFE ,,,, were applied as hydrophobic agents. Li et al ,, reported that the use of DSO in the catalyst layer increased the hydrophobicity, thereby enhancing the water management.…”

Section: Strategies Used To Improve the Performance Of Real-life Fuel...mentioning

confidence: 99%

“…Avcioglu et al ,, investigated the effect of the PTFE additive on commercial catalysts with low (20 wt %), middle (48 wt %), and high (70 wt %) Pt contents. The presence of PTFE on the catalyst layer using catalysts with low and medium Pt contents enhanced the cell performance.…”

Section: Strategies Used To Improve the Performance Of Real-life Fuel...mentioning

confidence: 99%

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Differences in the Electrochemical Performance of Pt-Based Catalysts Used for Polymer Electrolyte Membrane Fuel Cells in Liquid Half- and Full-Cells

et al. 2021

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A substantial amount of research effort has been directed toward the development of Pt-based catalysts with higher performance and durability than conventional polycrystalline Pt nanoparticles to achieve high-power and innovative energy conversion systems. Currently, attention has been paid toward expanding the electrochemically active surface area (ECSA) of catalysts and increase their intrinsic activity in the oxygen reduction reaction (ORR). However, despite innumerable efforts having been carried out to explore this possibility, most of these achievements have focused on the rotating disk electrode (RDE) in half-cells, and relatively few results have been adaptable to membrane electrode assemblies (MEAs) in full-cells, which is the actual operating condition of fuel cells. Thus, it is uncertain whether these advanced catalysts can be used as a substitute in practical fuel cell applications, and an improvement in the catalytic performance in real-life fuel cells is still necessary. Therefore, from a more practical and industrial point of view, the goal of this review is to compare the ORR catalyst performance and durability in half- and full-cells, providing a differentiated approach to the durability concerns in half- and full-cells, and share new perspectives for strategic designs used to induce additional performance in full-cell devices.

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Section: Strategies Used To Improve the Performance Of Real-life Fuel...mentioning

confidence: 99%

Section: Strategies Used To Improve the Performance Of Real-life Fuel...mentioning

confidence: 99%

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Differences in the Electrochemical Performance of Pt-Based Catalysts Used for Polymer Electrolyte Membrane Fuel Cells in Liquid Half- and Full-Cells

et al. 2021

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“…The PEMFC membrane electrode assembly (MEA) performance significantly depends on not only on the activity and EASA of the catalysts, but also on the catalytic layer structure and thickness. For instance, a thinner catalytic layer (with a higher Pt content) provides a better mass transfer and lower charge transfer resistance within the active layer [42][43][44]. Layers with a Pt content gradient structure have also been proposed [45].…”

Section: Introductionmentioning

confidence: 99%

Reduced Graphene Oxide-Supported Pt-Based Catalysts for PEM Fuel Cells with Enhanced Activity and Stability

et al. 2021

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Platinum (Pt)-based electrocatalysts supported by reduced graphene oxide (RGO) were synthesized using two different methods, namely: (i) a conventional two-step polyol process using RGO as the substrate, and (ii) a modified polyol process implicating the simultaneous reduction of a Pt nanoparticle precursor and graphene oxide (GO). The structure, morphology, and electrochemical performances of the obtained Pt/RGO catalysts were studied and compared with a reference Pt/carbon black Vulcan XC-72 (C) sample. It was shown that the Pt/RGO obtained by the optimized simultaneous reduction process had higher Pt utilization and electrochemically active surface area (EASA) values, and a better performance stability. The use of this catalyst at the cathode of a proton exchange membrane fuel cell (PEMFC) led to an increase in its maximum power density of up to 17%, and significantly enhanced its performance especially at high current densities. It is possible to conclude that the optimized synthesis procedure allows for a more uniform distribution of the Pt nanoparticles and ensures better binding of the particles to the surface of the support. The advantages of Pt/RGO synthesized in this way over conventional Pt/C are the high electrical conductivity and specific surface area provided by RGO, as well as a reduction in the percolation limit of the components of the electrocatalytic layer due to the high aspect ratio of RGO.

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“…One of the key components that determines the durability of PEMFC is platinum (Pt) electrocatalyst since the decrease of Pt surface area is one of the major reasons for PEMFC deterioration. To date, tremendous studies have been carried out to improve their durability [7][8][9][10] . It is known that in order to improve the Pt electrocatalyst durability, the durability of carbon supports for Pt is highly important since carbon corrosion induces Pt agglomeration and decreases Pt surface area 11,12 .…”

Section: Introductionmentioning

confidence: 99%

Effect of Surface Roughness of Carbon Nanotube-based Catalyst Layer for Polymer Electrolyte Membrane Fuel Cell Performance

Fujigaya

Phua

Weerathunga

et al. 2022

Preprint

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The effect of surface roughness of the catalyst layer (CL) based on carbon-nanotube (CNTs) in contact with polymer electrolyte membrane (PEM) in polymer electrolyte membrane fuel cell (PEMFC) was studied. The surface roughness of vacuum-filtrated CL sheets were evaluated using laser microscope and the surface of CL sheet contacting the filter membrane was found to be smoother compared to the surface exposed to the air. When a smoother surface of the CL sheet was laminated with PEM to fabricate membrane-electrode-assembly (MEA), power density of the single cell was 604.6 mW cm-2 at 80 °C under 100%R.H., which was greater than the MEA having a rougher CL surface (542.4 mW cm-2).

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Effective factors improving catalyst layers of PEM fuel cell

Cited by 19 publications

References 168 publications

Differences in the Electrochemical Performance of Pt-Based Catalysts Used for Polymer Electrolyte Membrane Fuel Cells in Liquid Half- and Full-Cells

Differences in the Electrochemical Performance of Pt-Based Catalysts Used for Polymer Electrolyte Membrane Fuel Cells in Liquid Half- and Full-Cells

Reduced Graphene Oxide-Supported Pt-Based Catalysts for PEM Fuel Cells with Enhanced Activity and Stability

Effect of Surface Roughness of Carbon Nanotube-based Catalyst Layer for Polymer Electrolyte Membrane Fuel Cell Performance

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