Synthesis and characterization of high performing Fe-N-C catalyst for oxygen reduction reaction (ORR) in Alkaline Exchange Membrane Fuel Cells

Hossen, Mosaddek; Artyushkova, Kateryna; Atanassov, Plamen; Serov, Alexey

doi:10.1016/j.jpowsour.2017.08.036

Cited by 219 publications

(122 citation statements)

References 83 publications

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“…1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 The high catalytic activity of FeÀN-comp-2 in RDE compared to the other composites and FeÀNÀCDC-1 can be attributed to two main factors: a slightly higher nitrogen content and thus higher concentration of active sites and a beneficial morphology with mesoporous MWCNT networks around the microporous CDC particles, which create highways between the CDC particles for oxygen diffusion. [8] The E onset and E 1/2 for this catalyst were 0.96 V and 0.83 V vs RHE, respectively, and the S BET was 520 m 2 g À1 , which is comparable to that of the FeÀN-comp materials. Compared to other highly active ORR catalysts in the literature, FeÀN-comp catalysts also measure up quite well.…”

Section: Electrocatalytic Activity Of Feànàc Catalysts For the Orrmentioning

confidence: 62%

“…Fuel cells play an important role in the hydrogen energy cycle as they offer a means for clean energy conversion, with the cathodic oxygen reduction reaction (ORR) being the main obstacle in introducing sustainable and efficient low-temperature fuel cell systems. [6,7] The most active of such catalysts are typically based on carbon nanomaterials doped with nitrogen and transition metals (MÀN/C catalysts), [8][9][10][11] as they are relatively stable both chemically and mechanically, highly conductive and can be tailored to have high surface areas. [1][2][3][4] Traditionally, low-temperature fuel cells rely on protonexchange membranes as the polymer electrolyte due to the availability of highly conductive membranes, but in recent years there has been a shift towards researching anion exchange membrane fuel cells (AEMFC) largely due to the faster kinetics of the ORR in alkaline conditions.…”

Section: Introductionmentioning

confidence: 99%

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Iron and Nitrogen Co‐doped Carbide‐Derived Carbon and Carbon Nanotube Composite Catalysts for Oxygen Reduction Reaction

et al. 2018

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Replacing Pt-based catalysts with noble-metal free catalysts for the oxygen reduction reaction (ORR) is one of the most important topics currently in electrocatalysis. Iron-and nitrogen-doped carbon materials have shown great promise in this area. In this work, we demonstrate the remarkable electrocatalytic activity towards the ORR of carbide-derived carbon (CDC) and multi-walled carbon nanotube (MWCNT) composite catalysts. The CDC material is synthesized from titanium carbide and doped using 1,10-phenanthroline and iron (II) acetate. The material is then mixed with MWCNTs and further modified with dicyandiamide (DCDA) and additional iron by using a multi-step pyrolysis procedure. The morphology, structure, porosity, and elemental composition are then comprehensively studied with scanning electron microscopy, X-ray photoelectron spectroscopy, N 2 physisorption, and inductively coupled plasma mass spectroscopy. The electrocatalytic activity of the catalysts for the ORR is studied using the rotating disk electrode method and in a single-cell anion exchange membrane fuel cell using the Tokuyama A201 membrane.

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Section: Electrocatalytic Activity Of Feànàc Catalysts For the Orrmentioning

confidence: 62%

Section: Introductionmentioning

confidence: 99%

Iron and Nitrogen Co‐doped Carbide‐Derived Carbon and Carbon Nanotube Composite Catalysts for Oxygen Reduction Reaction

et al. 2018

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“…The successful doping of N, an electron‐rich active substance, can contribute to the fast electron transfer in ORR, resulting from the generation of a donor state over the Fermi energy . In addition, Fe‐containing species have been proved to be active sites to catalyze ORR . The types of N in ECNFs greatly influence the activity of electrocatalysts in ORR.…”

Section: Resultsmentioning

confidence: 99%

Metal‐containing Ionic Liquid/Polyacrylonitrile‐derived Carbon Nanofibers for Oxygen Reduction Reaction and Flexible Zn–Air Battery

Wang

Guo

et al. 2019

Chemistry An Asian Journal

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Practical applications of Zn-airb atteriesa re usually limited by sluggish kinetics of oxygen reduction reaction. Replacing Pt-basedc atalysts with convenient, efficient and low-cost materials to boost oxygen reductionr eaction is highly desirable. Herein, ac lass of FeÀNc o-doped carbon nanofibers is successfully synthesized by pyrolysis of polyacrylonitrile/metal-containing ionic liquid-based electrospun films. The ionic liquidsa ct as porogen to provide multiscale pores as well as activator to bring carbon nanofibers active sites. The catalyst possessing appropriate actives ites and unique 3D porous architecture exhibits remarkable longterm stability and electrocatalytic activity.P articularly,t he catalystm aintains as hape of membrane after carbonization, manifesting its direct use as air electrode without binders. It is notable that an all solid-state Zn-air battery based on the carbon nanofibers exhibitsg ood flexibility,i ndicating its promising applicationasw earable devices.

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“…The carbonisation was performed using a modified sacrificial support method, which introduced pores into the catalysts. They found that the presence of higher amount of surface oxides and pyridinic nitrogen is an important reason for the better performance towards ORR in alkaline electrolyte . Yi et al.…”

Section: Fenx For Electrocatalysismentioning

confidence: 99%

Homogenous Meets Heterogenous and Electro‐Catalysis: Iron‐Nitrogen Molecular Complexes within Carbon Materials for Catalytic Applications

Nicolae

Qiao

et al. 2019

ChemCatChem

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High activity, selectivity and recyclability are crucial parameters in the design of performant catalysts. Furthermore, depletion of platinum‐group metals (PGM) drives further research towards highly available metal‐based catalysts. In this framework, iron‐based active sites supported on nitrogen‐doped carbon materials (Fe/N@C) have been explored to tackle important applications in organic chemistry, for both oxidation and reduction of C−O/C−N bonds, as well as in electrocatalysis for energy applications. This versatile reactivity makes them ideal substitutes to PGM‐based catalysts, being based on abundant elements. Despite important advances in material science and characterisation techniques allowing the analysis of heterogeneous/electro‐ catalysts at the atomic scale, the nature of the catalytically active sites in Fe/N@C remains elusive. Most recent theoretical studies point at individual FeNx single sites as the origin of the catalytic activity. Although their identification is still challenging with current technology, establishing their real nature will foster further research on these PGM‐free and redox‐polyvalent catalysts. In this review, we provide an overview of their applications in both thermal and electrochemical processes. Throughout the review, we highlight the different characterisation techniques employed to gain insight into the catalyst's active sites.

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Synthesis and characterization of high performing Fe-N-C catalyst for oxygen reduction reaction (ORR) in Alkaline Exchange Membrane Fuel Cells

Cited by 219 publications

References 83 publications

Iron and Nitrogen Co‐doped Carbide‐Derived Carbon and Carbon Nanotube Composite Catalysts for Oxygen Reduction Reaction

Iron and Nitrogen Co‐doped Carbide‐Derived Carbon and Carbon Nanotube Composite Catalysts for Oxygen Reduction Reaction

Metal‐containing Ionic Liquid/Polyacrylonitrile‐derived Carbon Nanofibers for Oxygen Reduction Reaction and Flexible Zn–Air Battery

Homogenous Meets Heterogenous and Electro‐Catalysis: Iron‐Nitrogen Molecular Complexes within Carbon Materials for Catalytic Applications

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