Highly efficient transition metal and nitrogen co-doped carbide-derived carbon electrocatalysts for anion exchange membrane fuel cells

Ratso, Sander; Kruusenberg, Ivar; Käärik, Maike; Kook, Mati; Puust, Laurits; Saar, Rando; Leis, Jaan; Tammeveski, Kaido

doi:10.1016/j.jpowsour.2017.08.046

Cited by 78 publications

(42 citation statements)

References 60 publications

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“…Therefore, changing the metal organic framework and optimizing the catalyst atomic structure has also become a popular research area. For instance, heterogeneous atom‐doped carbon materials have been widely studied because of their low‐cost and abundant raw materials, high catalytic activity, high chemical stability, and environmental friendliness . Moreover, porous morphology and larger electrochemical surface area also improve catalytic activity .…”

Section: Introductionmentioning

confidence: 71%

Investigation of Perovskite Oxide SrCo_0.8Cu_0.1Nb_0.1O_3–δ as a Cathode Material for Room Temperature Direct Ammonia Fuel Cells

et al. 2019

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Single‐phase perovskite oxide SrCo 0.8 Cu 0.1 Nb 0.1 O 3– δ was synthesized using a Pechini method. X‐ray diffraction (XRD) analysis indicated a cubic structure with a =3.8806(7) Å. The oxide material was combined with active carbon, forming a composite electrode to be used as the cathode in a room temperature ammonia fuel cell based on an anion membrane electrolyte and NiCu/C anode. An open circuit voltage (OCV) of 0.19 V was observed with dilute 0.02 m (340 ppm) ammonia solution as the fuel. The power density and OCV were improved upon the addition of 1 m NaOH to the fuel, suggesting that the addition of NaOH, which could be achieved through the introduction of alkaline waste to the fuel stream, could improve performance when wastewater is used as the fuel. It was found that the SrCo 0.8 Cu 0.1 Nb 0.1 O 3− δ cathode was converted from irregular shape into shuttle‐shape during the fuel cell measurements. As the key catalysts for electrode materials for this fuel cell are all inexpensive, after further development, this could be a promising technology for removal of ammonia from wastewater.

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Section: Introductionmentioning

confidence: 71%

Investigation of Perovskite Oxide SrCo_0.8Cu_0.1Nb_0.1O_3–δ as a Cathode Material for Room Temperature Direct Ammonia Fuel Cells

et al. 2019

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“…Compared to other highly active ORR catalysts in the literature, FeÀN-comp catalysts also measure up quite well. [30] This shows the positive effect of multi-step doping and using a composite catalyst, which provides a more beneficial morphology and efficient doping. For better comparison with the literature data, the potential was converted from SCE to RHE scale (E RHE = E SCE + 1.008 V).…”

Section: Electrocatalytic Activity Of Feànàc Catalysts For the Orrmentioning

confidence: 94%

“…This mixture is then pyrolyzed and the substrate along with inactive metal phases is removed by etching in acid mixtures, which allows for control over the porosity and structure by choosing the right substrate and reagents. [29][30][31][32][33] The main advantage of CDCs over other widely-used carbon supports is the amorphous nature and extremely high specific surface area that can be achieved (typically over 2000 m 2 g À1 ) [34] with highly reproducible largescale results already shown. [17] The resulting powder is then pyrolyzed to carbonize the MOF and dope it with transition metals and nitrogen, with the MOF playing a large role in directing the porosity and structure of the resulting catalyst.…”

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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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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“…The other case is that the hard‐templates in situ transfer to catalysts as a doping agent. The development of various 3D M−N−C materials is a hot‐topic during these years . 3D M−N−C materials are mainly divided into three typical morphologies including 3D NPs, 3D hollow spheres, and 3D porous structures.…”

Section: D Metal‐nitrogen‐carbon Materials For the Oxygen Reduction mentioning

confidence: 99%

“…The development of various 3D MÀ NÀ C materials is a hot-topic during these years. [144][145][146][147][148] 3D MÀ NÀ C materials are mainly divided into three typical morphologies including 3D NPs, 3D hollow spheres, and 3D porous structures. In addition, 3D carbon materials also have been applied to construct the 3D MÀ NÀ C electrocatalysts, which are similar to the support of CNTs and graphene.…”

Section: D Metal-nitrogen-carbon Materials For the Oxygen Reduction mentioning

confidence: 99%

Importance of Electrocatalyst Morphology for the Oxygen Reduction Reaction

2019

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Proton/anion‐exchange membrane fuel cells (PEMFC and AEMFC), generating electricity from the H2 energy with zero‐carbon emission, have become very promising energy conversion devices to meet the increasing energy demand and reduce the dependence on fossil fuels. Currently, platinum (Pt) based materials have proven to be the most efficient electrocatalysts for the oxygen reduction reaction (ORR) at the cathode of the PEMFC and AEMFC. However, the high price and the limited reserve of Pt greatly hinder their industrial applications. Recently, transition metal‐nitrogen‐carbon (M−N−C) based material, as an efficient alternative to replace the precious metal Pt‐based material, has attracted researchers’ attention. Great contributions have been devoted to develop M−N−C based electrocatalysts. This review summarizes recent advances on M−N−C based electrocatalysts used for ORR from the point view of morphology. One‐dimensional (1D), two‐dimensional (2D), three‐dimensional (3D) and multi‐dimensional (MD) M−N−C materials were discussed thoroughly with particular attention on the relationship between the structure and the catalytic activity.

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Highly efficient transition metal and nitrogen co-doped carbide-derived carbon electrocatalysts for anion exchange membrane fuel cells

Cited by 78 publications

References 60 publications

Investigation of Perovskite Oxide SrCo_0.8Cu_0.1Nb_0.1O_3–δ as a Cathode Material for Room Temperature Direct Ammonia Fuel Cells

Investigation of Perovskite Oxide SrCo_0.8Cu_0.1Nb_0.1O_3–δ as a Cathode Material for Room Temperature Direct Ammonia Fuel Cells

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

Importance of Electrocatalyst Morphology for the Oxygen Reduction Reaction

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Highly efficient transition metal and nitrogen co-doped carbide-derived carbon electrocatalysts for anion exchange membrane fuel cells

Cited by 78 publications

References 60 publications

Investigation of Perovskite Oxide SrCo0.8Cu0.1Nb0.1O3–δ as a Cathode Material for Room Temperature Direct Ammonia Fuel Cells

Investigation of Perovskite Oxide SrCo0.8Cu0.1Nb0.1O3–δ as a Cathode Material for Room Temperature Direct Ammonia Fuel Cells

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

Importance of Electrocatalyst Morphology for the Oxygen Reduction Reaction

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Investigation of Perovskite Oxide SrCo_0.8Cu_0.1Nb_0.1O_3–δ as a Cathode Material for Room Temperature Direct Ammonia Fuel Cells

Investigation of Perovskite Oxide SrCo_0.8Cu_0.1Nb_0.1O_3–δ as a Cathode Material for Room Temperature Direct Ammonia Fuel Cells