NiCo alloy nanoparticles electrodeposited on an electrochemically reduced nitrogen-doped graphene oxide/carbon-ceramic electrode: a low cost electrocatalyst towards methanol and ethanol oxidation

Rahmani, Kaveh; Habibi, Biuck

doi:10.1039/c9ra06290d

Cited by 33 publications

(23 citation statements)

References 86 publications

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“…Usage of nickel and cobalt together shows interesting results [ 106 , 126 , 131 , 132 , 133 , 134 ]. This effect is a result of the reaction between these two hydroxides: Ni(OH) 2 + CoOOH → NiOOH + Co(OH) 2 …”

Section: Electrooxidation Of Alcoholsmentioning

confidence: 99%

“…The presence of both of these metals in electrode material leads to an increased number of active sites for methanol oxidation on the electrode surface enhances the reaction kinetics [ 106 , 126 , 131 , 132 , 133 , 134 ].…”

Section: Electrooxidation Of Alcoholsmentioning

confidence: 99%

“…Because of its low price (compared to platinum), it has been proposed as the first nonprecious metal for alcohol oxidation and is gaining increasing research attention. The nickel surface characteristics, related to its oxidation from Ni 2+ to Ni 3+ , lead to strong results in regard to the oxidation of simple alcohols [ 134 ]. During alcohol oxidation, Ni 3+ is the active species, so the performance of nickel-based electrodes can be further improved using another element with low oxidation potential as a dopant, which enhances the oxidation of nickel from the II to III oxidation state [ 134 ].…”

Section: Electrooxidation Of Alcoholsmentioning

confidence: 99%

“…The nickel surface characteristics, related to its oxidation from Ni 2+ to Ni 3+ , lead to strong results in regard to the oxidation of simple alcohols [ 134 ]. During alcohol oxidation, Ni 3+ is the active species, so the performance of nickel-based electrodes can be further improved using another element with low oxidation potential as a dopant, which enhances the oxidation of nickel from the II to III oxidation state [ 134 ]. Examples of these elements include cobalt [ 134 ], chromium [ 129 ] and molybdenum [ 159 ].…”

Section: Electrooxidation Of Alcoholsmentioning

confidence: 99%

“…During alcohol oxidation, Ni 3+ is the active species, so the performance of nickel-based electrodes can be further improved using another element with low oxidation potential as a dopant, which enhances the oxidation of nickel from the II to III oxidation state [ 134 ]. Examples of these elements include cobalt [ 134 ], chromium [ 129 ] and molybdenum [ 159 ]. In the case of a cobalt bifunctional mechanism takes place because Co atoms promote the adsorption of hydroxide ions at low potentials and thus improve the formation of nickel hydroxide active sites, as it was shown in reaction (10) [ 134 ].…”

Section: Electrooxidation Of Alcoholsmentioning

confidence: 99%

See 4 more Smart Citations

Effect of Anode Material on Electrochemical Oxidation of Low Molecular Weight Alcohols—A Review

Wala

Simka

2021

Molecules

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The growing climate crisis inspires one of the greatest challenges of the 21st century—developing novel power sources. One of the concepts that offer clean, non-fossil electricity production is fuel cells, especially when the role of fuel is played by simple organic molecules, such as low molecular weight alcohols. The greatest drawback of this technology is the lack of electrocatalytic materials that would enhance reaction kinetics and good stability under process conditions. Currently, electrodes for direct alcohol fuel cells (DAFCs) are mainly based on platinum, which not only provides a poor reaction rate but also readily deactivates because of poisoning by reaction products. Because of these disadvantages, many researchers have focused on developing novel electrode materials with electrocatalytic properties towards the oxidation of simple alcohols, such as methanol, ethanol, ethylene glycol or propanol. This paper presents the development of electrode materials and addresses future challenges that still need to be overcome before direct alcohol fuel cells can be commercialized.

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Section: Electrooxidation Of Alcoholsmentioning

confidence: 99%

Section: Electrooxidation Of Alcoholsmentioning

confidence: 99%

Section: Electrooxidation Of Alcoholsmentioning

confidence: 99%

Section: Electrooxidation Of Alcoholsmentioning

confidence: 99%

Section: Electrooxidation Of Alcoholsmentioning

confidence: 99%

See 3 more Smart Citations

Effect of Anode Material on Electrochemical Oxidation of Low Molecular Weight Alcohols—A Review

Wala

Simka

2021

Molecules

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Tuning the Electronic Structures of TMNs‐Modified Ni‐Based Catalysts to Enhance the Performance for MOR in Alkaline Media

et al. 2023

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Transition metal nitrides are considered as the promising materials in the energy conversion processes due to the similar electronic structures to Pt. In this work, a series of Ni/TMN−C (TM=V, Mo, Nb, Ta) catalysts were synthesized and investigated the catalytic performance for methanol oxidation reaction in alkaline media. The electrochemical measurements indicated that the TNNs‐modified Ni/C catalysts exhibited higher activity, kinetics, charge transfer and stability for alkaline MOR compared with Ni/C. It was found that the incorporation of TMNs improved the activity and stability for MOR in various degree. Specially, Ni/VN−C showed the highest catalytic activity, nearly three times higher than that of Ni/C due to the highest coverage of the surface component NiOOH, consistent with the Tafel and EIS results that it exhibited the fastest charge transfer kinetics and reaction rate. XPS characterization indicated that the obvious electron interaction occurred between the TMNs and Ni species and Ni would transfer electrons to the transition metal nitrides, resulting in the electron‐rich states of TMNs. Interestingly, combining the d‐band center and activity of the corresponding catalysts, it could be found that a volcano plot existed between them, suggesting that the introduction of appropriate nitrides would change the electronic structure of Ni and enhance the catalytic performance for MOR in alkaline media.

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Electrofabrication of the Ternary NiCuFe Alloy Nanoparticles/ERGO Nanocomposite: Effective Electrooxidation of the Glucose and Glycerol in Alkaline Media

Rahmani

Habibi

2020

ChemistrySelect

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In this work, a facile and straightforward approach was developed to fabricate a ternary NiCuFe alloy nanoparticles (ANPs) on/in the electrochemically reduced graphene oxide (ERGO) nanocomposite at the carbon‐ceramic electrode (CE); NiCuFe‐ANPs/ERGO/CE, through a two‐step electrochemical deposition method. After physicochemical characterization of the fabricated nanocomposite, it was found that the NiCuFe‐ANPs/ERGO/CE has high electrocatalytic activity towards the oxidation of glucose and glycerol in alkaline media. The obtained results showed that the NiCuFe‐ANPs/ERGO/CE has excellent electrocatalytic activity in comparison with binary alloy nanoparticles including NiCu and NiFe in the same conditions. Moreover, the achieved results also indicated that the electrocatalytic activity of the NiCuFe‐ANPs/ERGO/CE has high value in comparison with NiCuFe‐ANPs/CE (without ERGO layers on the CE). The best results for electrooxidation of glucose (Jp=163.14 mA/cm2) and glycerol (Jp=170.35 mA/cm2) were in 0.1 M KOH and 5 mM fuels concentration. Chronoamperometry and chronopotentiometry results showed that the NiCuFe‐ANPs/ERGO/CE has significant toxic tolerance and stability. Finally, to evaluate the capacity of active sites located on the surface of the NiCuFe‐ANPs/ERGO/CE, high concentrations of glucose and glycerol were used and it was found that the prepared electrocatalyst has a high capacity towards high concentrations of these fuels.

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NiCo alloy nanoparticles electrodeposited on an electrochemically reduced nitrogen-doped graphene oxide/carbon-ceramic electrode: a low cost electrocatalyst towards methanol and ethanol oxidation

Abstract: NiCo alloy nanoparticles on the electrochemically reduced nitrogen-doped graphene oxide/carbon-ceramic electrode: a low cost electrocatalyst towards methanol and ethanol oxidation.

Cited by 33 publications

References 86 publications

Effect of Anode Material on Electrochemical Oxidation of Low Molecular Weight Alcohols—A Review

Effect of Anode Material on Electrochemical Oxidation of Low Molecular Weight Alcohols—A Review

Tuning the Electronic Structures of TMNs‐Modified Ni‐Based Catalysts to Enhance the Performance for MOR in Alkaline Media

Electrofabrication of the Ternary NiCuFe Alloy Nanoparticles/ERGO Nanocomposite: Effective Electrooxidation of the Glucose and Glycerol in Alkaline Media

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