Facile synthesis of Fe/Ni bimetallic oxide solid-solution nanoparticles with superior electrocatalytic activity for oxygen evolution reaction

Wang, Lingxiao; Geng, Jing; Wang, Wenhai; Yuan, Chao; Kuai, Long; Geng, Baoyou

doi:10.1007/s12274-015-0881-0

Cited by 103 publications

(41 citation statements)

References 34 publications

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“…[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%

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%

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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“…Incorporation of third metal in the binary alloy promotes the multi‐electron transportation process which leads to change of oxidation state of metal from lower to higher value. This increase in oxidation state of Ni 3+/4+ or Co 2+/3+ having more oxidizing power are particularly critical to enable excellent catalytic stability towards OER …”

Section: Resultsmentioning

confidence: 99%

FeCoNi Alloy as Noble Metal‐Free Electrocatalyst for Oxygen Evolution Reaction (OER)

Saha

Ganguli

2017

ChemistrySelect

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The development of efficient and durable noble metal‐free electrocatalyst for oxygen evolution reaction (OER) is highly desired in polymer electrolyte membrane (PEM) based water electrolysis and metal‐ air batteries but still remains a challenge. In this paper, we employ co‐precipitation method to prepare layered double hydroxides followed by calcination to synthesize nanoalloy catalyst, which was further characterized by X‐ray diffraction (XRD), scanning electron microscopy (SEM/EDS), high resolution transmission electron microscopy (HRTEM)and x‐ray photoelectron spectroscopy. As a novel OER electrocatalyst, the FeCoNi alloy catalyst shows remarkable OER activity enhancement with an overpotential of only 400 mV and a low Tafel slope 72 mV dec−1. This work offers a unique paradigm for the synthesis of competitive electrocatalyst for OER with excellent durability under alkaline condition.

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“…Therefore, special attention has been paid to the development of synthetic methods that enable the composition control with a homogeneous distribution of elements. Such synthesis methods include electrodeposition, [29,93,[150][151][152][153][154][155] photochemical metal-organic deposition (PMOD), [156][157][158][159][160] aerosol-sprayassisted processes, [161,162] reactive magnetron co-sputtering, [163] solvothermal processes, [164] and thermal decomposition. [165] …”

Section: Amorphous Metal Oxidesmentioning

confidence: 99%

Recent Progress on Multimetal Oxide Catalysts for the Oxygen Evolution Reaction

Kim

et al. 2018

Advanced Energy Materials

719

498

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fossil fuels are being widely researched for the development of a sustainable energy system. Among the various candidates for green energy resources, hydrogen energy has been at the center of attention. [1,2] Hydrogen is both inexhaustible and environmentally friendly, because it can be produced from earth-abundant reactants such as water and methane and because no CO 2 or other toxic products are emitted during its conversion into other energy form such as electricity, respectively. Moreover, hydrogen can exhibit significantly larger energy density compared with other energy sources such as gasoline and coal. The most widely used method of hydrogen production today is steam reforming because of its low cost in the process. [3] Nevertheless, the release of carbon monoxide or carbon dioxide as byproducts in the steam reforming process diminishes the environmental merits of hydrogen energy. Thus, as a possible cleaner alternative, an electrolysis method that involves producing hydrogen by electrochemically splitting water has been extensively investigated. Using one of the most abundant resources, water, the production of hydrogen from it yields only oxygen as a byproduct.In the water electrolysis, the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) occur simultaneously, as described by the following equationsIn order for the reaction to proceed, a voltage of 1.23 V is theoretically required between an anode and a cathode. However, an overpotential (represented by the symbol η) should be additionally applied to account for the potential loss resulting from kinetic limitations occurring during the electrochemical reaction. The use of electrocatalysts can lower the overpotential by kinetically facilitating the water-splitting reaction either in HER or OER. Due to the nature of four-electron involving OER, it is generally believed that the OER is much more sluggish than the HER; thus, the development of efficient OER Hydrogen is a promising alternative fuel for efficient energy production and storage, with water splitting considered one of the most clean, environmentally friendly, and sustainable approaches to generate hydrogen. However, to meet industrial demands with electrolysis-generated hydrogen, the development of a low-cost and efficient catalyst for the oxygen evolution reaction (OER) is critical, while conventional catalysts are mostly based on precious metals. Many studies have thus focused on exploring new efficient nonprecious-metal catalytic systems and improving the understandings on the OER mechanism, resulting in the design of catalysts with superior activity compared with that of conventional catalysts. In particular, the use of multimetal rather than single-metal catalysts is demonstrated to yield remarkable performance improvement, as the metal composition in these catalysts can be tailored to modify the intrinsic properties affecting the OER. Herein, recent progress and accomplishments of multimetal catalytic systems, including several important groups of catalysts: layered h...

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Facile synthesis of Fe/Ni bimetallic oxide solid-solution nanoparticles with superior electrocatalytic activity for oxygen evolution reaction

Cited by 103 publications

References 34 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

FeCoNi Alloy as Noble Metal‐Free Electrocatalyst for Oxygen Evolution Reaction (OER)

Recent Progress on Multimetal Oxide Catalysts for the Oxygen Evolution Reaction

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Facile synthesis of Fe/Ni bimetallic oxide solid-solution nanoparticles with superior electrocatalytic activity for oxygen evolution reaction

Cited by 103 publications

References 34 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

FeCoNi Alloy as Noble Metal‐Free Electrocatalyst for Oxygen Evolution Reaction (OER)

Recent Progress on Multimetal Oxide Catalysts for the Oxygen Evolution Reaction

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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