Tuning the morphology and Fe/Ni ratio of a bimetallic Fe-Ni-S film supported on nickel foam for optimized electrolytic water splitting

Shang, Xiao; Qin, Jun-Feng; Lin, Jai-Ming; Dong, Bin; Chi, Jing‐Qi; Liu, Zi-Zhang; Wang, Lei; Chai, Yong‐Ming; Liu, Chenguang

doi:10.1016/j.jcis.2018.03.083

Cited by 53 publications

(32 citation statements)

References 60 publications

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“…The fitting peaks of S 2p at binding energies of 161.1, 162.2 and 163.4 eV in Figure b are coincided with S 2p 3/2 , S 2p 1/2 and Ni−S bonding of the divalent sulfide ions . The additional peak at 168.5 eV is typical for Ni−O−S species with a high oxidation state of sulfur due to the surface oxidation in air . The peak at binding energy of 705.2 eV in the Fe 2p spectrum can be assigned to the Ni auger peak, and the peaks at 711.3 and 724.4 eV are accorded with Fe 3+ (Figure c) .…”

Section: Resultsmentioning

confidence: 97%

“…[42] The additional peak at 168.5 eV is typical for NiÀ OÀ S species with a high oxidation state of sulfur due to the surface oxidation in air. [24,27,43] The peak at binding energy of 705.2 eV in the Fe 2p spectrum can be assigned to the Ni auger peak, [44,45] and the peaks at 711.3 and 724.4 eV are accorded with Fe 3 + (Figure 4c). [2,46] No peaks at 719 and 732 eV preclude the existence of an independent Fe 2 O 3 phase.…”

Section: Resultsmentioning

confidence: 97%

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Fe‐Doped Ni₃S₂ Nanowires with Surface‐Restricted Oxidation Toward High‐Current‐Density Overall Water Splitting

Wang

Zhang

et al. 2019

ChemElectroChem

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It is critical to develop a highly effective and economical electrocatalyst to lower the energy losses for the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER). In this work, Fe‐doped Ni3S2 nanowires with diameters of ca. 17 nm and lengths of 1.4∼2 μm are synthesized on Ni foam through a one‐step solvothermal route for alkaline water splitting, which display notable active and excellent durability for both OER and HER under high current densities. The optimal Fe13.7%‐Ni3S2 nanowires electrode can attain 200 mA cm−2 at a fairly low overpotential of 223 mV, and 500 mA cm−2 at 245 mV toward OER. Furthermore, it yields a considerable low overpotential of 109 mV to garner 10 mA cm−2, and 246 mV for 500 mA cm−2 toward HER. The incorporation of iron simultaneously modifies the electronic structure and morphology of Ni3S2, which not only enhances the conductivity but also generates abundant active edge sites. The slight surface‐restricted oxidation of nanowires in a strongly basic electrolyte in situ generates a large number of interfaces, which enables the reactivity and durability for both OER and HER. Accordingly, an alkaline water electrolyzer with two Fe13.7%‐Ni3S2 electrodes only requires a low cell voltage of 1.53 V to achieve 10 mA cm−2, and 1.95 V to 500 mA cm−2 with striking stability. The as‐prepared Fe‐doped Ni3S2 nanowires can be potentially utilized for actual water electrolysis under high current densities.

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Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 97%

Fe‐Doped Ni₃S₂ Nanowires with Surface‐Restricted Oxidation Toward High‐Current‐Density Overall Water Splitting

Wang

Zhang

et al. 2019

ChemElectroChem

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“…However, it is a challenge to tune the morphology in a facile way [151] . Shang and co-works successfully tuned the morphology of FeNi-S film on nickel foam by liquid crystal template (LCT) [152] . The existence of LCT could lead to the porous FeNi-S film with high surface area, which could expose more active sites and lead to an excellent catalytic performance.…”

Section: Nife-based Electrocatalysts On Nickel Foam For Her In Alkalimentioning

confidence: 99%

NiFe-based nanostructures on nickel foam as highly efficiently electrocatalysts for oxygen and hydrogen evolution reactions

Zhang

et al. 2019

Journal of Energy Chemistry

182

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“…As seen in Figure 7, the charge transfer controlled hydrogen evolution reaction occurs on all electrodes 2,3,33,77 . The EIS results were fitted by Zview, and fit results and electrical equivalent circuit (EEC) are presented in Figure 7, Tables 1, and S1.…”

Section: Resultsmentioning

confidence: 99%

“…Electrodes with high catalytic activity and low cost are needed to make hydrogen gas production by the electrolysis of water more appealing with lower costs. To meet the need, specific electrodes are recommended such as transition metal modified foam, felt, and nano‐sheet electrodes 24‐38 . These have a great advantage with a larger surface area and specified active centers on substrates/precursors.…”

Section: Introductionmentioning

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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Tuning the morphology and Fe/Ni ratio of a bimetallic Fe-Ni-S film supported on nickel foam for optimized electrolytic water splitting

Cited by 53 publications

References 60 publications

Fe‐Doped Ni₃S₂ Nanowires with Surface‐Restricted Oxidation Toward High‐Current‐Density Overall Water Splitting

Fe‐Doped Ni₃S₂ Nanowires with Surface‐Restricted Oxidation Toward High‐Current‐Density Overall Water Splitting

NiFe-based nanostructures on nickel foam as highly efficiently electrocatalysts for oxygen and hydrogen evolution reactions

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

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Tuning the morphology and Fe/Ni ratio of a bimetallic Fe-Ni-S film supported on nickel foam for optimized electrolytic water splitting

Cited by 53 publications

References 60 publications

Fe‐Doped Ni3S2 Nanowires with Surface‐Restricted Oxidation Toward High‐Current‐Density Overall Water Splitting

Fe‐Doped Ni3S2 Nanowires with Surface‐Restricted Oxidation Toward High‐Current‐Density Overall Water Splitting

NiFe-based nanostructures on nickel foam as highly efficiently electrocatalysts for oxygen and hydrogen evolution reactions

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

Contact Info

Product

Resources

About

Fe‐Doped Ni₃S₂ Nanowires with Surface‐Restricted Oxidation Toward High‐Current‐Density Overall Water Splitting

Fe‐Doped Ni₃S₂ Nanowires with Surface‐Restricted Oxidation Toward High‐Current‐Density Overall Water Splitting