Nitrogen-doped carbon black supported Pt–M (M = Pd, Fe, Ni) alloy catalysts for oxygen reduction reaction in proton exchange membrane fuel cell

Yang, Heena; Ko, Youngdon; Lee, Woonghee; Züttel, Andreas; Kim, Wha-Jung

doi:10.1016/j.mtener.2019.06.007

Cited by 49 publications

(30 citation statements)

References 57 publications

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“…Furthermore, graphene oxide (GO) has various functional groups, i.e., −COOH and −OH, for immobilization of different active species. Recently, the incorporation of heteroatoms and especially nitrogen [31][32][33][34] into the carbon plane has attracted great attention.…”

Section: Introductionmentioning

confidence: 99%

Palladium-Nickel Electrocatalysts on Nitrogen-Doped Reduced Graphene Oxide Nanosheets for Direct Hydrazine/Hydrogen Peroxide Fuel Cells

et al. 2021

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In the present work, nitrogen-doped reduced graphene oxide-supported (NrGO) bimetallic Pd–Ni nanoparticles (NPs), fabricated by means of the electrochemical reduction method, are investigated as an anode electrocatalyst in direct hydrazine–hydrogen peroxide fuel cells (DHzHPFCs). The surface and structural characterization of the synthesized catalyst affirm the uniform deposition of NPs on the distorted NrGO. The electrochemical studies indicate that the hydrazine oxidation current density on Pd–Ni/NrGO is 1.81 times higher than that of Pd/NrGO. The onset potential of hydrazine oxidation on the bimetallic catalyst is also slightly more negative, i.e., the catalyst activity and stability are improved by Ni incorporation into the Pd network. Moreover, the Pd–Ni/NrGO catalyst has a large electrochemical surface area, a low activation energy value and a low resistance of charge transfer. Finally, a systematic investigation of DHzHPFC with Pd–Ni/NrGO as an anode and Pt/C as a cathode is performed; the open circuit voltage of 1.80 V and a supreme power density of 216.71 mW cm−2 is obtained for the synthesized catalyst at 60 °C. These results show that the Pd–Ni/NrGO nanocatalyst has great potential to serve as an effective and stable catalyst with low Pd content for application in DHzHPFCs.

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Section: Introductionmentioning

confidence: 99%

Palladium-Nickel Electrocatalysts on Nitrogen-Doped Reduced Graphene Oxide Nanosheets for Direct Hydrazine/Hydrogen Peroxide Fuel Cells

et al. 2021

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“…In seeking to prepare effective cathode electrocatalysts for ORR, diverse synthetic strategies involving various architectures on carbon supports were explored, engaging Pt bimetallic [ 81 ] or multi-metallic nanoparticles on grapheme [ 82 ], core-shell structures [ 50 , 54 , 83 ], etc. The electrical conductivity and stability of the decorated metallic nanoparticles could be effectively improved through hybridization with carbon nanostructures [ 50 , 54 , 84 ], while it could also address the lack of stability that metal catalysts face during the electrolysis process due to dissolution or agglomeration issues [ 85 ]. However, the smoothness of the carbon nanomaterial makes the interaction between the active site and the carrier very weak.…”

Section: Cnhs In Electrocatalysismentioning

confidence: 99%

Carbon Nanohorn-Based Electrocatalysts for Energy Conversion

Kagkoura

Tagmatarchis

2020

Nanomaterials

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In the context of even more growing energy demands, the investigation of alternative environmentally friendly solutions, like fuel cells, is essential. Given their outstanding properties, carbon nanohorns (CNHs) have come forth as promising electrocatalysts within the nanocarbon family. Carbon nanohorns are conical nanostructures made of sp2 carbon sheets that form aggregated superstructures during their synthesis. They require no metal catalyst during their preparation and they are inexpensively produced in industrial quantities, affording a favorable candidate for electrocatalytic reactions. The aim of this article is to provide a comprehensive overview regarding CNHs in the field of electrocatalysis and especially, in oxygen reduction, methanol oxidation, and hydrogen evolution, as well as oxygen evolution from water splitting, underlining the progress made so far, and pointing out the areas where significant improvement can be achieved.

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“…Diverse groups have conducted several investigations to enhance Pt catalysts' performance toward oxygen reduction reaction (ORR) in the cathode electrode, including its activity and durability in recent years [3,4]. One alternative to improve cathodic catalysts catalytic activity is supporting the Pt active phase over conductive materials; some of these materials employed are carbon nano-forms like; Vulcan carbon (C) [5], carbon black (NCB) [6], graphenes (GNPs) [7], multi-walled carbon nanotubes (CNT) [8], graphenes with intercalated carbon nanotube [9], graphenes with carbon black [10], and others. Pt electrocatalyst supported on multi-walled carbon nanotubes has diverse advantages compared with other carbon nano-forms for PEMFCs, generating excellent corrosion performance and higher stability in the ORR [11,12].…”

Section: Introductionmentioning

confidence: 99%

“…Numerous studies indicate that Pt and another metal's catalytic activity can enhance ORR [13,14]. Some examples of these bimetallic electrocatalysts are PtM3/C (M= Fe, Co, and Ni) [14], PtM /GNPs (M= Ni, Fe, and Cu) [7], Pt3M/NCB (M= Pd, Fe, and Ni) [6], among others.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Pt-Ni/CNT Cathodic Catalyst and its Application in a PEM fuel Cell

et al. 2021

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Abstract. This work reports the synthesis, characterization, and catalytic activity of Pt-Ni/CNT with a low platinum load to use as cathode electrocatalyst in PEMFC (proton-exchange membrane fuel cells). The synthesis of nickel particles on the carbon nanotubes surface was carried out by chemical reduction of a Ni(ethylenediamine) complex; after that, the galvanic displacement reaction was performed to platinum deposition onto Ni/CNT. The Pt-Ni/CNT was deposited by spray technique on a gas diffuser layer (GDL) and subsequently subjected to several potential cycles to promote Ni atoms migration. Finally, its catalytic activity was evaluated in a fuel cell. Resumen. En este trabajo, se reporta la síntesis, caracterización y evaluación catalítica del electrocatalizador Pt-Ni/CNT con bajo contenido de platino, empleado como electrocatalizador catódico en una celda de combustible tipo PEMFC (Celda de combustible de membrana de intercambio protónico). La síntesis de las partículas de níquel sobre la superficie de los nanotubos de carbono se llevó a cabo mediante la reducción química del complejo de Ni(etilendiamina) y posteriormente, se depositó platino sobre el material Ni/CNT mediante la reacción de desplazamiento galvánico. Se depositó una película de Pt-Ni/CNT sobre un difusor de gas mediante la técnica de esprayado y posteriormente fue sometido a diversos ciclos de potencial para promover la migración de los átomos de níquel y evaluar su actividad catalítica en una celda de combustible.

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Nitrogen-doped carbon black supported Pt–M (M = Pd, Fe, Ni) alloy catalysts for oxygen reduction reaction in proton exchange membrane fuel cell

Cited by 49 publications

References 57 publications

Palladium-Nickel Electrocatalysts on Nitrogen-Doped Reduced Graphene Oxide Nanosheets for Direct Hydrazine/Hydrogen Peroxide Fuel Cells

Palladium-Nickel Electrocatalysts on Nitrogen-Doped Reduced Graphene Oxide Nanosheets for Direct Hydrazine/Hydrogen Peroxide Fuel Cells

Carbon Nanohorn-Based Electrocatalysts for Energy Conversion

Synthesis of Pt-Ni/CNT Cathodic Catalyst and its Application in a PEM fuel Cell

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