Electrodeposited Ni-Sn coatings as electrocatalysts for hydrogen and oxygen evolution in alkaline solutions

Jović, B.M.; Jović, V.D.; Lačnjevac, U.Č.; Gajić-Krstajić, Lj.; Krstajić, N.V.

doi:10.5937/zasmat1601136j

Cited by 6 publications

(11 citation statements)

References 36 publications

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“…44 Therefore, Sn as support with selenides over the substrates like Ni and Cu foam will be a greater advantage in terms of activity and stability in different electrolytes. [39][40][41][42]44 With these findings, in this work, we have successfully grown advanced Cu 3 Sn@Cu foam and selenized Cu 3 Sn@Cu foam via a double hydrothermal treatment for the first time. For comparison, Cu 7 Se 4 @Cu foam was prepared by a hydrothermal treatment by employing a similar protocol.…”

Section: ■ Introductionmentioning

confidence: 72%

Advanced Cu₃Sn and Selenized Cu₃Sn@Cu Foam as Electrocatalysts for Water Oxidation under Alkaline and Near-Neutral Conditions

et al. 2019

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Water electrolysis is a field growing rapidly to replace the limited fossil fuels for harvesting energy in future. In searching of non-noble and advanced electrocatalysts for the oxygen evolution reaction (OER), here we highlight a new and advanced catalyst, selenized Cu 3 Sn@Cu foam, with overwhelming activity for OER under both alkaline (1 M KOH) and near-neutral (1 M NaHCO 3 ) conditions. The catalysts were prepared by a double hydrothermal treatment where Cu 3 Sn is first formed which further underwent for second hydrothermal condition for selenization. For comparison, Cu 7 Se 4 @Cu foam was prepared by a hydrothermal treatment under the same protocol. The as-formed Cu 3 Sn@Cu foam, selenized Cu 3 Sn@Cu foam, and Cu 7 Se 4 @Cu foam were utilized as electrocatalysts and showed their potentiality in terms of activity and stability. In 1 M KOH, for attaining the benchmarking current density of 50 mA cm −2 , selenized Cu 3 Sn@Cu foam required a low overpotential of 384 mV and increased charge transfer kinetics with a lower Tafel slope value of 177 mV/dec comparing Cu 3 Sn@Cu foam, Cu 7 Se 4 @Cu foam, and pristine Cu foam. Furthermore, potentiostatic analysis (PSTAT) was carried out for 40 h for selenized Cu 3 Sn@Cu foam and with minimum degradation in activity assured the long-term application for hydrogen generation. Similarly, under neutral condition selenized Cu 3 Sn@Cu foam also delivered better activity trend at higher overpotentials in comparison with others. Therefore, the assistance of both Sn and Se in Cu foam ensured better activity and stability in comparison with only selenized Cu foam. With these possible outcomes, it can also be combined with other active, non-noble elements for enriched hydrogen generation in future.

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Section: ■ Introductionmentioning

confidence: 72%

Advanced Cu₃Sn and Selenized Cu₃Sn@Cu Foam as Electrocatalysts for Water Oxidation under Alkaline and Near-Neutral Conditions

et al. 2019

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“…shows the effect of incorporation of chalcogenides Ni−Co−S//Ni−Co−P nanoarrays over NF shows the high efficiency in the overall water splitting and shows the cell voltage as 1.57 V at the current density of 20 mA cm −2 [76] . Thus, the observed reports with the introduction of metals with the Ni/Co−P system with various crystalline phases increases the charge transfer process with high surface area systemically [53,114–118] . The stability of bimetal system was studied for many hours, gives the clear view that the bimetal phosphide system is more sustainable for alkaline water electrolysis in near future as an energy source [57] .…”

Section: Transition Metal Phosphide Electrocatalyst For Twsmentioning

confidence: 93%

“…In addition to the single metal phosphides, the bi‐metal systems observed better in the electrocatalytic performance with high number of surface area and the conductivity [49,55,76,93,112,113] . There are very few reports with the findings of such synergistic effect of this bi‐metal system and their activity in the electrocatalytic water splitting [53,114–118] . Following are the reported work in NiCoP electrocatalyst system as a bi‐functional catalyst for overall‐water splitting reaction [53,75,119] .…”

Section: Transition Metal Phosphide Electrocatalyst For Twsmentioning

confidence: 96%

Recent Progresses in Engineering of Ni and Co based Phosphides for Effective Electrocatalytic Water Splitting

et al. 2021

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Producing pure hydrogen (H2) is presumably an alternative way for replacing the fossil fuels. Since the last few decades finding alternatives for state‐of‐the‐art catalysts such as IrO2 and RuO2 for oxygen evolution reaction (OER) and platinum for hydrogen evolution reaction (HER) has been a major challenge in the field of water electrolysis. To replace such precious metals, many efforts have been made to develop transition metal based bifunctional catalyst for alkaline water electrolysis. Among them, transition metal phosphides (TMPs) show superior activity in both OER and HER with varying pH conditions. Moreover, the different phases of phosphides, P‐rich or P deficient metal composites (Ni/Co−P) offer a great opportunity in total water splitting (TWS) applications. There is no detailed review in the literature outlining the possible combinations, synthesis methods and morphologies of Ni and Co based phosphides. Based on the above shortage about TMPs as a bi‐functional catalyst for water electrolysis, this review summarizes the activity and stability Ni and Co phosphides. Furthermore, the review highlights monometallic phosphides such as NiP and CoP, bi‐metallic phosphides such as NiCoP, and the synergistic effect of doping Fe into NiP/CoP or Fe ‐NiCoP systems while detailing their preparation methods. Overall, this review extends the role of designing Ni and Co phosphides for efficient large scale electrocatalysis of hydrogen production.

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“…The electrodeposition of Pd is characterized with the well-defined diffusion limiting current density (j L (Pd)) in the solution containing only PdCl 2 (PdCl 4 2-), as well as in the solution containing PdCl 2 and AgCl (AgCl 4 3-), with the one recorded in the presence of AgCl being slightly higher (j L (Pd) = -59.18 µA cm -2 ). In the absence of AgCl, the sharp peak corresponding to the formation of Pd-H 6,12,13 is detected at -0.10 V, while in the presence of AgCl such peak does not exist, indicating that the Pd-H cannot be formed during the AgPd alloy electrodeposition. Electrodeposition of Ag is seen to commence at about -0.11 V, being characterized with the sharp increase of the current density until the peak at about -0.15 V has been reached.…”

Section: Electrodeposition Of Samples For the Alsv Xps And Eds Analysismentioning

confidence: 98%

“…The possibility of AgPd alloys electrodeposition from the solution containing high concentration of chloride ions (12 mol dm -3 LiCl) was first mentioned by Brenner, 1 considering the results obtained by Graham et al 2,3 for the electrodeposition of AgPt alloys. It was shown later [4][5][6][7] that in the excess of chloride ions AgCl could dissolve to the concentrations sufficient for the electrodeposition of AgPd alloys, with Pd electrodeposition starting at more positive potentials than Ag.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical deposition and characterization of AgPd alloy layers

Elezović

Żabiński

Krstajić-Pajić³

et al. 2018

JSCS

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The AgPd alloys were electrodeposited onto Au and glassy carbon disc electrodes from the solution containing 0.001 mol dm-3 PdCl2 + 0.04 mol dm-3 AgCl + 0.1 mol dm-3 HCl + 12 mol dm-3 LiCl under the non-stationary diffusion (quiescent electrolyte) and convective diffusion (? = 1000 rpm) to the different amounts of charge and at different current densities. Electrodeposited alloy layers were characterized by the anodic linear sweep voltammetry (ALSV), scanning electron microscopy, energy dispersive X-ray spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS). The compositions of the AgPd alloys determined by the EDS were almost identical to the theoretically predicted ones, while the compositions obtained by XPS and ALSV analysis were similar to each other, but different from those obtained by EDS. Deviation from the theoretically predicted values (determined by the ratio jL(Pd)/j(Ag)) was more pronounced at lower current densities and lower charges of AgPd alloys electrodeposition, due to the lower current efficiencies for alloys electrodeposition. The ALSV analysis indicated the presence of Ag and Pd, expressed by two ALSV peaks, and in some cases the presence of the additional peak, which was found to correspond to the dissolution of large AgPd crystals, formed at thicker electrodeposits (higher electrodeposition charge), indicating, for the first time, that besides the phase structure, the morphology of alloy electrodeposit could also influence the shape of the ALSV response. In addition to Ag and Pd, the XPS analysis confirmed the presence of AgCl at the surface of samples electrodeposited to low thicknesses (amounts of charge). [Project of the Serbian Ministry of Education, Science and Technological Development, Grant no. 172054]

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Electrodeposited Ni-Sn coatings as electrocatalysts for hydrogen and oxygen evolution in alkaline solutions

Abstract: The hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER)

Cited by 6 publications

References 36 publications

Advanced Cu₃Sn and Selenized Cu₃Sn@Cu Foam as Electrocatalysts for Water Oxidation under Alkaline and Near-Neutral Conditions

Advanced Cu₃Sn and Selenized Cu₃Sn@Cu Foam as Electrocatalysts for Water Oxidation under Alkaline and Near-Neutral Conditions

Recent Progresses in Engineering of Ni and Co based Phosphides for Effective Electrocatalytic Water Splitting

Electrochemical deposition and characterization of AgPd alloy layers

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Electrodeposited Ni-Sn coatings as electrocatalysts for hydrogen and oxygen evolution in alkaline solutions

Abstract: The hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER)

Cited by 6 publications

References 36 publications

Advanced Cu3Sn and Selenized Cu3Sn@Cu Foam as Electrocatalysts for Water Oxidation under Alkaline and Near-Neutral Conditions

Advanced Cu3Sn and Selenized Cu3Sn@Cu Foam as Electrocatalysts for Water Oxidation under Alkaline and Near-Neutral Conditions

Recent Progresses in Engineering of Ni and Co based Phosphides for Effective Electrocatalytic Water Splitting

Electrochemical deposition and characterization of AgPd alloy layers

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Product

Resources

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Advanced Cu₃Sn and Selenized Cu₃Sn@Cu Foam as Electrocatalysts for Water Oxidation under Alkaline and Near-Neutral Conditions

Advanced Cu₃Sn and Selenized Cu₃Sn@Cu Foam as Electrocatalysts for Water Oxidation under Alkaline and Near-Neutral Conditions