Study of the oxygen evolution reaction on nickel-based composite coatings in alkaline media

Kubisztal, Julian; Budniok, A.

doi:10.1016/j.ijhydene.2008.06.023

Cited by 68 publications

(44 citation statements)

References 18 publications

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“…The trend of decreasing the molybdenum content in Ni-Mo composites as a result of riasing the applied current density has been also reported by Kubisztal et al [2,11]. This phenomenon could be due to the fact that the amount of Mo powder incorporated in the composite depends on the rate of mass transport.…”

Section: Discussionsupporting

confidence: 68%

“…According to Kubisztal et al [11], the main contribution toward the electrocatalytic activity of Ni-Mo composites is attributed to the increase in the actual surface area due to higher surface roughness. Mo particles, while embedded in the Ni matrix, produce a moderate increase in the catalytic effect in the point of contact.…”

Section: Discussionmentioning

confidence: 99%

“…Also according to Kubisztal et al [11] electrolytic Ni-Mo and Ni-Mo-Si coatings were prepared by codeposition of nickel with silicon and molybdenum powders from a nickel bath in which Mo and Si particles were suspended by stirring. Composite coatings are characterized by very porous surface in comparison with nickel coating after the same thermal treatment.…”

Section: Introductionmentioning

confidence: 99%

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Surface morphology and electrochemical characterization of electrodeposited Ni–Mo nanocomposites as cathodes for hydrogen evolution

Abdel-Karim

Halim

El‐Raghy

et al. 2012

Journal of Alloys and Compounds

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Section: Discussionsupporting

confidence: 68%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Surface morphology and electrochemical characterization of electrodeposited Ni–Mo nanocomposites as cathodes for hydrogen evolution

Abdel-Karim

Halim

El‐Raghy

et al. 2012

Journal of Alloys and Compounds

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“…Figure 4 shows the graph of the relationship between the compositions of the as-electrodeposited Ni−Mo−P layers and the hardness of the coatings. Initially, it can be observed that the lowest hardness value is presented by the Ni 81 Mo 18 6 have similar hardness to the layers with lower Mo content but with higher P content such as Ni 78 Mo 10 P 12 . These results suggest that both P and Mo contents contribute for the hardness properties of the Ni−Mo−P coatings and that the absence of cracks is a requirement to produce electrodeposited Ni−Mo−P coatings with good hardness properties.…”

Section: Physical Characterisationmentioning

confidence: 94%

“…There is currently great interest in the study of the electrodeposition of Ni−Mo coatings, because they are considered to be corrosion-resistant coatings, [1][2][3][4] they are electrocatalysts for hydrogen and oxygen evolution reactions, [5][6][7][8] and they present good hardness properties. 9 Recently, we showed that electrodeposited Ni−Mo coatings presented inferior corrosion-resistance and hardness properties in comparison to electrodeposited Cr coatings.…”

Section: Introductionmentioning

confidence: 99%

Characterisation of electrodeposited and heat-treated Ni−Mo−P coatings

Melo¹,

Casciano²,

Correia³

et al. 2012

J. Braz. Chem. Soc.

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A eletrodeposição e as propriedades de dureza e resistência à corrosão de eletrodepósitos de Ni−Mo−P foram estudadas. A caracterização das camadas foi feita por microscopia eletrônica de varredura, difração de raios X e energia dispersiva de raios X. Os ensaios de corrosão foram feitos à temperatura ambiente em NaCl 10 -1 mol dm -3 e por polarização linear potenciodinâmica. Camadas amorfas de Ni−Mo−P foram obtidas e a composição destas mostrou ser dependente da composição do banho, da densidade de corrente aplicada e da temperatura do banho. A dureza das camadas de Ni−Mo−P mostrou ser dependente dos teores de Mo e P e que a ausência de trincas é um requerimento necessário para obter eletrodepósitos de Ni−Mo−P com boas propriedades de dureza. A dureza das camadas tratadas termicamente aumentou com a temperatura de tratamento térmico devido à precipitação das fases Ni, Ni 3 P e NiMo durante o tratamento térmico. A resistência à corrosão dos eletrodepósitos de Ni−Mo−P aumentou com o teor de P na camada. A camada Ni 78 Mo 10 P 12 apresentou os maiores valores de dureza a a maior resistência à corrosão. A adição de P mostrou ser benéfica para as propriedades de dureza e resistência à corrosão de eletrodepósitos de Ni−Mo.The electrodeposition, hardness and corrosion resistance properties of Ni−Mo−P coatings were investigated. Characterisations of the electrodeposited coatings were carried out using scanning electron microscopy, X-ray diffraction and energy dispersive X-ray analysis techniques. Corrosion tests were performed at room temperature in 10 -1 mol dm -3 NaCl solutions and by potentiodynamic linear polarisation. Amorphous Ni−Mo−P coatings were successfully obtained by electrodeposition using direct current. The coating composition showed to be dependent on the bath composition, current density and bath temperature. Both P and Mo contents contribute for the hardness properties of the Ni−Mo−P coatings and the absence of cracks is a requirement to produce electrodeposited Ni−Mo−P coatings with good hardness properties. The hardness values increase with heat-treatment temperature due to the precipitation of Ni, Ni 3 P and NiMo phases during the heat treatment. The corrosion resistance of the electrodeposited Ni−Mo−P amorphous coatings increases with P content in the layer. Among the electrodeposited Ni−Mo−P amorphous coatings, Ni 78 Mo 10 P 12 presented the best hardness and corrosion-resistance properties. The results showed that the addition of P is beneficial for the hardness and corrosion resistance properties of the Ni−Mo-based coatings.

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Transition‐Metal (Co, Ni, and Fe)‐Based Electrocatalysts for the Water Oxidation Reaction

2016

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Increasing energy demands and environment awareness have promoted extensive research on the development of alternative energy conversion and storage technologies with high efficiency and environmental friendliness. Among them, water splitting is very appealing, and is receiving more and more attention. The critical challenge of this renewable-energy technology is to expedite the oxygen evolution reaction (OER) because of its slow kinetics and large overpotential. Therefore, developing efficient electrocatalysts with high catalytic activities is of great importance for high-performance water splitting. In the past few years, much effort has been devoted to the development of alternative OER electrocatalysts based on transition-metal elements that are low-cost, highly efficient, and have excellent stability. Here, recent progress on the design, synthesis, and application of OER electrocatalysts based on transition-metal elements, including Co, Ni, and Fe, is summarized, and some invigorating perspectives on the future developments are provided.

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Study of the oxygen evolution reaction on nickel-based composite coatings in alkaline media

Cited by 68 publications

References 18 publications

Surface morphology and electrochemical characterization of electrodeposited Ni–Mo nanocomposites as cathodes for hydrogen evolution

Surface morphology and electrochemical characterization of electrodeposited Ni–Mo nanocomposites as cathodes for hydrogen evolution

Characterisation of electrodeposited and heat-treated Ni−Mo−P coatings

Transition‐Metal (Co, Ni, and Fe)‐Based Electrocatalysts for the Water Oxidation Reaction

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