A high-temperature anion-exchange membrane fuel cell

Douglin, John C.; Varcoe, John R.; Dekel, Dario R.

doi:10.1016/j.powera.2020.100023

Cited by 83 publications

(48 citation statements)

References 46 publications

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“… 47 − 49 The main drawback for AEMFCs was poor conductivity of the anion-exchange membranes (AEMs); however, in recent studies, there are reports on AEMs exhibiting high hydroxide conductivity, 50 − 55 sometimes exceeding 200 mS cm –1 , significantly higher than the proton-conducting Nafion-based membranes. 56 , 57 With the development of highly conducting AEMs, we need suitable catalysts for the enhancement of AEMFC performance. M-N-C-type catalysts are promising candidates due to their high ORR electrocatalytic activity, resistance toward corrosion, and high active surface area.…”

Section: Introductionmentioning

confidence: 99%

Bifunctional Oxygen Electrocatalysis on Mixed Metal Phthalocyanine-Modified Carbon Nanotubes Prepared via Pyrolysis

Kumar

Kisand

Kozlova

et al. 2021

ACS Appl. Mater. Interfaces

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Non-precious-metal catalysts are promising alternatives for Pt-based cathode materials in low-temperature fuel cells, which is of great environmental importance. Here, we have investigated the bifunctional electrocatalytic activity toward the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER) of mixed metal (FeNi; FeMn; FeCo) phthalocyanine-modified multiwalled carbon nanotubes (MWCNTs) prepared by a simple pyrolysis method. Among the bimetallic catalysts containing nitrogen derived from corresponding metal phthalocyanines, we report the excellent ORR activity of FeCoN-MWCNT and FeMnN-MWCNT catalysts with the ORR onset potential of 0.93 V and FeNiN-MWCNT catalyst for the OER having E OER = 1.58 V at 10 mA cm –2 . The surface morphology, structure, and elemental composition of the prepared catalysts were examined with scanning electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. The FeCoN-MWCNT and FeMnN-MWCNT catalysts were prepared as cathodes and tested in anion-exchange membrane fuel cells (AEMFCs). Both catalysts displayed remarkable AEMFC performance with a peak power density as high as 692 mW cm –2 for FeCoN-MWCNT.

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Section: Introductionmentioning

confidence: 99%

Bifunctional Oxygen Electrocatalysis on Mixed Metal Phthalocyanine-Modified Carbon Nanotubes Prepared via Pyrolysis

Kumar

Kisand

Kozlova

et al. 2021

ACS Appl. Mater. Interfaces

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“…The HT800‐FeP aerogel, which exhibited the highest catalytic performance, was used to prepare an electrode via the gas diffusion electrode method reported elsewhere, [ 11,51–53 ] and tested in an AEMFC. The catalyst was first crushed and ground into a fine powder in a closed container.…”

Section: Methodsmentioning

confidence: 99%

Porphyrin Aerogel Catalysts for Oxygen Reduction Reaction in Anion‐Exchange Membrane Fuel Cells

Zion

Douglin

Cullen

et al. 2021

Adv Funct Materials

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Platinum group metal (PGM)‐free catalysts for oxygen reduction reaction have shown high oxygen reduction reaction activity in alkaline media. In order to further increase the power density of anion‐exchange membrane fuel cells (AEMFCs), PGM‐free catalysts need to have a high site density to reach high current densities. Herein, synthesis, characterization, and utilization of heat‐treated iron porphyrin aerogels are reported as cathode catalysts in AEMFCs. The heat treatment effect is thoroughly studied and characterized using several techniques, and the best performing aerogel is studied in AEMFC, showing excellent performance, reaching a peak power density of 580 mW cm−2 and a limiting current density of as high as 2.0 A cm−2, which can be considered the state‐of‐the‐art for PGM‐free based AEMFCs.

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“…The development of these studies for a long time was restrained by the lower conductivity of anion-exchange membranes, its additional decrease during the operation of the fuel cell due to sorption of carbon dioxide, and slow oxidation of hydrogen at high pH values [229]. However, at present, according to several authors, the situation has significantly improved due to creation of new stable anion-exchange membranes with high conductivity [230][231][232]. Intensive engineering developments and the introduction of new catalysts made it possible to significantly reduce the problems associated with the sorption of carbon dioxide and uneven distribution of water [233,234], as well as to create fundamentally new high-power AFCs based on anion-exchange membranes [4,232,235].…”

Section: Membranes In Fuel Cellsmentioning

confidence: 99%

“…However, at present, according to several authors, the situation has significantly improved due to creation of new stable anion-exchange membranes with high conductivity [230][231][232]. Intensive engineering developments and the introduction of new catalysts made it possible to significantly reduce the problems associated with the sorption of carbon dioxide and uneven distribution of water [233,234], as well as to create fundamentally new high-power AFCs based on anion-exchange membranes [4,232,235].…”

Section: Membranes In Fuel Cellsmentioning

confidence: 99%

Membrane Technologies for Decarbonization

Alent’ev

Волков

Воротынцев

et al. 2021

Membr. Membr. Technol.

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The deteriorating environmental situation has stimulated the world community to develop research related to the decarbonization of the economy and hydrogen energy. These two areas are essentially focused on membrane technologies, which play a crucial role in solving key tasks for these areas. This review is devoted to this research. The first part describes various membrane technologies aimed at capturing CO 2 from the most common gas mixtures, primarily containing nitrogen, methane, and hydrogen. In recent years, studies related to the amine purification of CO 2 , including membrane technologies, and the use of porous membranes filled with ionic liquids has also been intensively developed. Electromembrane technologies are also being developed that allow not only capture of CO 2 but also to process it into fuel or valuable chemicals. The course taken by several developed countries, including Russia, for the development of hydrogen energy includes the production, purification of hydrogen, and its conversion into energy. It should be noted that membrane technologies are fundamentally important for the development of each of these areas. Thus, the evolution of hydrogen is possible with the use of polymer membranes, and for deep purification and production of high-purity hydrogen by membrane catalysis; membranes based on palladium alloys are used. Finally, fuel cells are developed to produce energy from hydrogen, the most important part of which are proton or oxygen-conducting membranes.

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A high-temperature anion-exchange membrane fuel cell

Cited by 83 publications

References 46 publications

Bifunctional Oxygen Electrocatalysis on Mixed Metal Phthalocyanine-Modified Carbon Nanotubes Prepared via Pyrolysis

Bifunctional Oxygen Electrocatalysis on Mixed Metal Phthalocyanine-Modified Carbon Nanotubes Prepared via Pyrolysis

Porphyrin Aerogel Catalysts for Oxygen Reduction Reaction in Anion‐Exchange Membrane Fuel Cells

Membrane Technologies for Decarbonization

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