Synthesis of high crystalline nickel-iron hydrotalcite-like compound as an efficient electrocatalyst for oxygen evolution reaction

Zhang, Zejie; Liao, Jingjing; Bao, Xinjun; Yu, Huazhang

doi:10.1002/er.4555

Cited by 8 publications

(13 citation statements)

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“…However, their low scarcity and high cost have prevented them from being used for practical applications. [21][22][23][24][25] Thus, the invention of inexpensive and high-performance OER electrocatalysts consisting of earthabundant materials is essential to substitute precious metal oxide catalysts.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of FeO@CuCo ₂ S ₄ multifunctional electrode for ultrahigh‐capacity supercapacitors and efficient oxygen evolution reaction

et al. 2019

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Summary The outstanding multifunctional electrochemical properties of chalcogenide‐based FeO@CuCo2S4, such as electrochemical energy storage (EES) and electrocatalytic oxygen evolution reaction are demonstrated. The FeO@CuCo2S4 film is fabricated using a two‐step synthesis procedure. First, CuCo2S4 was grown on 3D porous nickel foam substrate using a mild hydrothermal growth technique, onto which FeO was then deposited via a magnetron sputtering. The FeO@CuCo2S4 film shows a cordillera‐like morphology with a uniformly distributed island‐like nanospheres on its surface. The optimized FeO@CuCo2S4 electrode delivers an ultrahigh specific capacitance of 3213 F g−1 at 1 A g−1. This FeO@CuCo2S4 electrode shows superior capacity retention and coulombic efficiency of ~116% and ~99%, respectively, after 10 000 charge/discharge stability cycles. Moreover, this superior electrode is also serves as an OER electrocatalyst in alkaline solution (1 M aqueous KOH), demonstrating better catalytic activity by attaining a low overpotential of ~240 mV at 10 mA cm−2 and a small Tafel slope of 51 mV dec−1. This FeO@CuCo2S4 catalyst has excellent current rate performance and endurance properties at a high current density rate of up to 100 mA cm−2 even after 25 hours. The post‐measurement HR‐TEM, EDS‐STEM mapping, and Raman analysis reveal the phase transformation of FeO@CuCo2S4 upon electro‐oxidation.

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Section: Introductionmentioning

confidence: 99%

Fabrication of FeO@CuCo ₂ S ₄ multifunctional electrode for ultrahigh‐capacity supercapacitors and efficient oxygen evolution reaction

et al. 2019

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“…6,8 Advantageously, AEMWEs use non-noble metals (Ni, Co, Fe, etc) as the cathode catalyst and their oxides or (oxy)hydroxides (eg, Ni-based or Co-based oxides and (oxy)hydroxides) as the anode catalyst. [9][10][11][12][13][14][15][16][17][18] Nevertheless, many studies have focused on water electrolysis under acid conditions because the efficiency is higher than that under alkaline conditions. 6,[19][20][21] For hydrogen production in PEMWEs, platinum group metals (PGMs) have been commonly used as the cathode catalyst owing to their high corrosion resistance and superior catalytic activity.…”

Section: Introductionmentioning

confidence: 99%

Facile electrochemical preparation of nonprecious Co‐Cu alloy catalysts for hydrogen production in proton exchange membrane water electrolysis

Kim

Park

et al. 2019

Int J Energy Res

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Summary To realize nonprecious‐metal catalysts with practical applicability for the hydrogen evolution reaction (HER), improved corrosion resistance and catalytic activity are required. In this study, composition‐controlled Co‐Cu alloys were fabricated by electrodeposition for use as HER catalysts in proton exchange membrane water electrolyzers (PEMWEs). As the Cu content in the alloy increased, the morphology changed from needle‐shaped particles to small round particles. Furthermore, a phase transition from a hexagonal close‐packed structure to a face‐centered cubic structure occurs because the latter structure is stabilized by adding Cu to Co. The optimum catalyst composition for the HER was found to be Co59Cu41, which had an overpotential of 342 mV at −10 mA cm−2. This catalyst exhibited excellent durability, showing a potential reduction of approximately 100 mV over 12 hours under a constant current density. This superior performance was attributed to the increase in the electrochemical surface area resulting from the addition of Cu, as confirmed by electrochemical double layer capacitance measurements, in addition to a counterbalance between the hydrogen adsorption energies of Co and Cu. Finally, the application of the Co‐Cu alloy catalyst as a cathode catalyst in a PEMWE resulted in excellent performance of 1.2 A cm−2 at 2.0 Vcell.

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“…It is urgent to develop renewable and environmental‐friendly energy sources. Oxygen evolution reaction (OER) is one of the key reactions in electrochemical water splitting, which has been considered as an efficient technology to produce hydrogen energy 1,2 . However, the kinetics in OER are so slow that the overpotential is very high, leading to huge electricity consumption 3 .…”

Section: Introductionmentioning

confidence: 99%

NiSFeS/N, S co‐doped carbon hybrid: Synergistic effect between NiS and FeS facilitating electrochemical oxygen evolution reaction

Zhao

Yin

et al. 2020

Int J Energy Res

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Summary A series of NiSFeS/N, S co‐doped carbon (NixFeyS/NSC) for electrochemical oxygen evolution reaction (OER) were synthesized by a co‐precipitation method and followed by pyrolysis in N2 atmosphere. NiSFeS hybrid was uniformly integrated with N, S co‐doped carbon in NixFeyS/NSC. NixFeyS/NSC showed high OER catalytic activity, and the optimized Ni60Fe40S/NSC afforded an OER overpotential of ~239 mV to deliver a current density of 10 mA cm−2 and showed a corresponding Tafel slope of ~30.9 mV dec−1 in 1 M KOH. Such OER catalytic activity was not only higher than that of IrO2, but also comparable with that of the most recently reported NiFe‐based sulfides for OER. Further study indicated that hybridizing NiS with FeS resulted in a synergistic effect for OER. The hybridization increased total amount of sulfides as active species, therefore enhancing the OER catalytic activity. In addition, the hybridization benefited the formation of petal‐like morphologies that contributing much to higher electrochemically active surface area (ECSA), and also boosted the content of graphitic and N, S co‐doped carbon that improving charge transfer efficiency.

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Synthesis of high crystalline nickel-iron hydrotalcite-like compound as an efficient electrocatalyst for oxygen evolution reaction

Cited by 8 publications

References 2 publications

Fabrication of FeO@CuCo ₂ S ₄ multifunctional electrode for ultrahigh‐capacity supercapacitors and efficient oxygen evolution reaction

Fabrication of FeO@CuCo ₂ S ₄ multifunctional electrode for ultrahigh‐capacity supercapacitors and efficient oxygen evolution reaction

Facile electrochemical preparation of nonprecious Co‐Cu alloy catalysts for hydrogen production in proton exchange membrane water electrolysis

NiSFeS/N, S co‐doped carbon hybrid: Synergistic effect between NiS and FeS facilitating electrochemical oxygen evolution reaction

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Synthesis of high crystalline nickel-iron hydrotalcite-like compound as an efficient electrocatalyst for oxygen evolution reaction

Cited by 8 publications

References 2 publications

Fabrication of FeO@CuCo 2 S 4 multifunctional electrode for ultrahigh‐capacity supercapacitors and efficient oxygen evolution reaction

Fabrication of FeO@CuCo 2 S 4 multifunctional electrode for ultrahigh‐capacity supercapacitors and efficient oxygen evolution reaction

Facile electrochemical preparation of nonprecious Co‐Cu alloy catalysts for hydrogen production in proton exchange membrane water electrolysis

NiSFeS/N, S co‐doped carbon hybrid: Synergistic effect between NiS and FeS facilitating electrochemical oxygen evolution reaction

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Fabrication of FeO@CuCo ₂ S ₄ multifunctional electrode for ultrahigh‐capacity supercapacitors and efficient oxygen evolution reaction

Fabrication of FeO@CuCo ₂ S ₄ multifunctional electrode for ultrahigh‐capacity supercapacitors and efficient oxygen evolution reaction