Electrocatalytic behaviour of NiBi coatings for hydrogen evolution reaction in alkaline medium

Mert, Mehmet; Kardaş, Gülfeza

doi:10.1016/j.jallcom.2011.06.107

Cited by 27 publications

(12 citation statements)

References 57 publications

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“…The oldest process for hydrogen production is the process of water electrolysis where the most important component of the system is the type of a chosen material for the electrodes design. Nickel (Ni) is a frequently used material in hydrogen generation process because of its good properties both as the catalyst and the electrode [11][12][13][14][15]. It is founding in forms of a bulk, the foam, a raney, a mesh and different alloys.…”

Section: Introductionmentioning

confidence: 99%

A significant improvement in material of foam

Đukić¹,

Alar²,

Firak³

et al. 2013

Journal of Alloys and Compounds

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a b s t r a c tIn investigation of different materials for electrodes used in electrolysers for hydrogen production, nickel foam shows wide interests in hydrogen scientific community. This paper brings novel results of performed experiments on pure nickel foam and nickel foam silver coated. The electrochemical behavior of chosen material in high concentrated alkaline media was studied using potentiostatic and potentiodynamic DC and AC electrochemical methods: linear polarization, electrochemical impedance spectroscopy. It was shown that using silver coatings enable higher hydrogen generation. There is defined linear region of the hydrogen production with evidence that an increasing of the electrodes overvoltage decreases the resistance to the charge transfer.

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Section: Introductionmentioning

confidence: 99%

A significant improvement in material of foam

Đukić¹,

Alar²,

Firak³

et al. 2013

Journal of Alloys and Compounds

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“…During forward scan, the appearance of the anodic peak at −0.6 V indicates Ni/Ni 2+ oxidation, followed by the change of Ni(OH) 2 to Ni(OH) 2 until 0.4 V (vs Ag/AgCl). Ni 2+ /Ni 3+ oxidation is detected at 0.45 V, whereas the Ni 3+ /Ni 2+ is seen at roughly 0.35 V as cathodic peak in backward scan 45‐48 . The anodic current increase at −0.25 V is corresponding to the transformation of Co/Co 2+ oxidation 1,49‐51 .…”

Section: Resultsmentioning

confidence: 92%

“…Ni 2+ /Ni 3+ oxidation is detected at 0.45 V, whereas the Ni 3+ /Ni 2+ is seen at roughly 0.35 V as cathodic peak in backward scan. [45][46][47][48] The anodic current increase at À0.25 V is corresponding to the transformation of Co/Co 2+ oxidation. 1,[49][50][51] In the voltammogram of…”

Section: Production Of Electrocatalysts and Investigation Of Hpementioning

confidence: 99%

Production of NF / NiCo /Ag catalyst for hydrogen generation in alkaline medium

Mert

2021

Intl J of Energy Research

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Summary The nickel foam (NF) precursors were doped with nickel, cobalt particles with various chemical compositions; the most convenient one was decorated with silver nano‐domes and investigated for hydrogen production efficiency (HPE) in 1 M KOH. The X‐ray diffraction, field emission scanning electron microscopy, and energy‐dispersive X‐ray techniques were used to characterize the catalysts. Linear sweep voltammetry, cyclic voltammetry, Tafel polarization measurements, electrochemical impedance spectroscopy, and chronoamperometry were used to determine the electrochemical efficiency. The rough structured Ni‐ and Co‐deposited NF significantly increased the HPE achieved with silver nano‐domes particles decoration (NF/NiCo‐2/Ag). The results showed that NF/NiCo‐2/Ag was the most efficient catalyst, as it has lower hydrogen overpotential and a higher HPE, which was detected in polarization curves, as well as being stable during the 1 × 104 s electrolysis period and having a good response during electrochemical analysis. The produced hydrogen gas volume was 108.1 mL by using NF/NiCo‐2/Ag, at the end of 30‐minute electrolysis in 1 M KOH.

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“…In this work, ternary coating was favored on graphite and Ni-Co-Cu was employed, based on the outstanding performance of binary coatings combining Ni-Co and Ni-Cu in the literature (Solmaz et al, 2008;Solmaz et al, 2009;Demirdelen et al, 2020). Considering the literature, the coating's Co and Cu mole ratios should be kept low in comparison to the Ni mole ratio (Mert and Kardaş, 2011;Sun et al, 2021). The electrodeposition of nickel, cobalt and copper was performed by galvanostatically using Iviumstat Electrochemical Interface with a three-electrode configuration.…”

Section: Methodsmentioning

confidence: 99%

Hidrojen Üretimi İçin Geçiş Metali İhtiva Eden Elektrokatalizörlerin Elektrokimyasal Üretimi

Ergen

Nazlıgül²,

Mert

2022

Osmaniye Korkut Ata Üniversitesi Fen Bilimleri Enstitüsü Dergisi

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Energy demand increases with increasing population and industrial developments. Unfortunately, non-renewable sources are used to meet a large portion of the demand. As a result of the negative effects, researchers have begun to investigate renewable sources by working in a variety of fields in order to ensure the energy and humanity's long-term sustainability. Renewable energy sources are very important for the future of the world. In this regard, we can claim that the convenient solution is "hydrogen" which is a promising energy carrier. In this study, alkaline electrolysis system was preferred due to the advantage of being easily integrated with renewable energy sources to meet the power requirements of the system. The platinum (Pt) and stainless steel (SS) electrodes were used as anodes. Graphite (G) and ternary transition metals (nickel, copper, cobalt) modified graphite (G/NiCoCu) electrodes were used as cathode. The modified electrodes were prepared by using a galvanostatic method. The various operation voltages were applied that varied from 2.3V to 3V in order to realize water splitting reaction. The amount of produced hydrogen gas was increased with increasing operation voltage. According to the experimental results, at 3V for 15 minutes of electrolysis time, the produced H 2 gas values were 15 mL, 11.13 mL and 13.12 mL for Pt -G (Cell-1), SS -G (Cell-2) and SS -G/ NiCoCu (Cell-3), respectively.

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Electrocatalytic behaviour of NiBi coatings for hydrogen evolution reaction in alkaline medium

Cited by 27 publications

References 57 publications

A significant improvement in material of foam

A significant improvement in material of foam

Production of NF / NiCo /Ag catalyst for hydrogen generation in alkaline medium

Hidrojen Üretimi İçin Geçiş Metali İhtiva Eden Elektrokatalizörlerin Elektrokimyasal Üretimi

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