Binary Co9S8–NiCo2S4 anchored on N-doped rGO backbone as an efficient bifunctional and durable hetero-catalyst for overall water-splitting in alkaline medium

Ali, Mubashir; Wahid, Malik; Majid, Kowsar

doi:10.1039/d3nj01470c

Cited by 4 publications

(1 citation statement)

References 87 publications

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“…The spectra display two main peaks at ∼854 and ∼873 eV, along with two shake-up satellites, confirming the coexistence of Ni 2+ and Ni 3+ . 46 The Co 2p spectrum in Fig. S8b and S9b† show two main peaks at ∼781 and ∼796 eV and two shake-up satellites, indicating the coexistence of Co 2+ and Co 3+ .…”

Section: Resultsmentioning

confidence: 91%

ZIF-67-derived Co–N–C supported nickel cobalt sulfide as a bifunctional electrocatalyst for sustainable hydrogen production via alkaline electrolysis

Sumit,

Borah,

Palaniyappan

et al. 2024

Nanoscale

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Section: Resultsmentioning

confidence: 91%

ZIF-67-derived Co–N–C supported nickel cobalt sulfide as a bifunctional electrocatalyst for sustainable hydrogen production via alkaline electrolysis

Sumit,

Borah,

Palaniyappan

et al. 2024

Nanoscale

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Interfacial Electronic Structure Engineering of NiCo₂Se₄ and NiTe₂ Nanorods for Enhanced Hydrogen Evolution Reaction

Bhat,

Ul Islam,

Majid

2024

ChemPhysChem

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Finding the best candidates with outstanding electrocatalytic capabilities for the hydrogen evolution reaction is essential for realizing large‐scale hydrogen production through electrolysis. In this study, we synthesized NiCo2Se4 (NCS) and NiTe2 (NT) nanorod arrays using a hydrothermal method. The confirmation of catalyst formation was achieved through X‐ray diffraction analysis, electron microscopy imaging, and X‐ray photoelectron spectroscopy. Leveraging the plentiful heterointerfaces and synergistic effects arising from the incorporation of bimetallic components, the NCS/NT electrocatalyst demonstrates remarkable efficacy in catalyzing the hydrogen evolution reaction. It achieves a minimal overpotential of 163 mV to attain a current density of 50 mA cm−2, showcasing exceptional catalytic activity. Further exploration has revealed that the engineering of heterogeneous interfaces and the morphology of nanorods not only guarantee the exposure of numerous active sites and expedite electron‐mass transfer but also trigger electron modulation. Such modulation serves to fine‐tune the adsorptive and desorptive dynamics of reaction intermediates, culminating in an enhancement of the catalyst's inherent activity. This study illuminates the novel composite electrocatalyst with robust synergy, highlighting the pivotal role of their unique nanostructures in achieving high‐efficiency hydrogen production via electrolysis.

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BaS₃:Sb₂S₃:GdS₂ Longitudinal Rods: Single‐Source Precursor Synthesis, Characterization, and Electrochemical Applications for Supercapacitance and Catalysis

Ahmad,

Jaffri,

Al‐Hawadi

et al. 2024

ChemistrySelect

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This study investigates a unique and energy‐efficient BaS3:Sb2S3:GdS2 nanocomposite chalcogenide system that was made using a single source dithiocarbamate precursor route. The produced dithiocarbamate metallic sulfide has an average crystallite size of 17.38 nm and a small band gap of 3.76 eV. An examination of functional groups revealed the existence of several linkages, including the metal sulfide bond. Morphologically, BaS3:Sb2S3:GdS2 appeared as elongated rods showing greater surface area for electrochemical activity. By constructing a nickel foam electrode and covering it with a slurry of BaS3:Sb2S3:GdS2, the electrochemical charge‐storing behavior of BaS3:Sb2S3:GdS2 was assessed. Prepared electrode exhibited auspicious electrical charge storage capacities with a specific capacitance reaching upto 633.32 F g−1. These findings suggest that there is a significant amount of potential for energy storage in the electrode. This electrode also exhibited a reduced series resistance of (Rs) = 0.31 Ω according to the impedance experiments, and a specific power density of 9109.16 W kg−1. In terms of electrocatalysis, the electrode produced oxygen production overpotential and corresponding Tafel slope of 334 mV and 366 mV dec−1, whereas the hydrogen production overpotential and Tafel slope were 229 mV and 175 mV dec−1, correspondingly.

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Binary Co₉S₈–NiCo₂S₄ anchored on N-doped rGO backbone as an efficient bifunctional and durable hetero-catalyst for overall water-splitting in alkaline medium

Abstract: A schematic illustration depicting the electrochemical water splitting by Co9S8–NiCo2S4/N-rGO heterocatalyst.

Cited by 4 publications

References 87 publications

ZIF-67-derived Co–N–C supported nickel cobalt sulfide as a bifunctional electrocatalyst for sustainable hydrogen production via alkaline electrolysis

ZIF-67-derived Co–N–C supported nickel cobalt sulfide as a bifunctional electrocatalyst for sustainable hydrogen production via alkaline electrolysis

Interfacial Electronic Structure Engineering of NiCo₂Se₄ and NiTe₂ Nanorods for Enhanced Hydrogen Evolution Reaction

BaS₃:Sb₂S₃:GdS₂ Longitudinal Rods: Single‐Source Precursor Synthesis, Characterization, and Electrochemical Applications for Supercapacitance and Catalysis

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Binary Co9S8–NiCo2S4 anchored on N-doped rGO backbone as an efficient bifunctional and durable hetero-catalyst for overall water-splitting in alkaline medium

Abstract: A schematic illustration depicting the electrochemical water splitting by Co9S8–NiCo2S4/N-rGO heterocatalyst.

Cited by 4 publications

References 87 publications

ZIF-67-derived Co–N–C supported nickel cobalt sulfide as a bifunctional electrocatalyst for sustainable hydrogen production via alkaline electrolysis

ZIF-67-derived Co–N–C supported nickel cobalt sulfide as a bifunctional electrocatalyst for sustainable hydrogen production via alkaline electrolysis

Interfacial Electronic Structure Engineering of NiCo2Se4 and NiTe2 Nanorods for Enhanced Hydrogen Evolution Reaction

BaS3:Sb2S3:GdS2 Longitudinal Rods: Single‐Source Precursor Synthesis, Characterization, and Electrochemical Applications for Supercapacitance and Catalysis

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Product

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Binary Co₉S₈–NiCo₂S₄ anchored on N-doped rGO backbone as an efficient bifunctional and durable hetero-catalyst for overall water-splitting in alkaline medium

Interfacial Electronic Structure Engineering of NiCo₂Se₄ and NiTe₂ Nanorods for Enhanced Hydrogen Evolution Reaction

BaS₃:Sb₂S₃:GdS₂ Longitudinal Rods: Single‐Source Precursor Synthesis, Characterization, and Electrochemical Applications for Supercapacitance and Catalysis