Selenium vacancy and phosphorus-doping-induced phase transition engineering of cobalt diselenide as bi-functional catalyst for water electrolysis

Wondimu, Tadele Hunde; Kabtamu, Daniel Manaye; Chen, Hsueh-Yu; Bayeh, Anteneh Wodaje; Huang, Hsin‐Chih; Wang, Chenhao

doi:10.1016/j.ijhydene.2019.09.101

Cited by 9 publications

(3 citation statements)

References 60 publications

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“…All resulting Nyquist plots presented in Figure b contain one semicircle in the high-frequency range. This semicircle is due to the charge-transfer process at the electrolyte–electrode interface. , The semicircle radius presents the charge-transfer resistance. Here, a smaller radius indicates a lower charge-transfer resistance value, which in turn represents a faster electron-transfer reaction.…”

Section: Resultsmentioning

confidence: 99%

Oxygen-Vacancy-Rich Cubic CeO₂ Nanowires as Catalysts for Vanadium Redox Flow Batteries

Bayeh

Lin

Chang

et al. 2020

ACS Sustainable Chem. Eng.

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A novel, low-cost, and powerful cerium-oxide nanowire (CeO2NW) electrode decorated with graphite felt (GF) through a one-step hydrothermal method was proposed in this study. Subsequently, hydrogen annealing was conducted to create defective-hydrogen-annealed CeO2NWs decorated with GF (H–CeO2NWs–GF) for use in vanadium redox flow batteries (VRFBs). The electrochemical results show that the H–CeO2NWs–GF reveals excellent electrocatalytic effects toward the VO2 +/VO2+ redox process in VRFBs at the positive electrode to facilitate the electrochemical kinetics of the VRFBs. The VRFBs using different electrode materials were compared with a VRFB using H–CeO2NWs–GF. The results revealed that the VRFB using H–CeO2NWs–GF exhibits the highest voltage efficiency of 90.4% at a current density of 40 mA cm–2, which is significantly higher than those using pristine GF (81.1%) and a CeO2NW electrode decorated with GF (88.4%). The significant improvement in the electrochemical performance of H–CeO2NWs–GF might be mostly ascribed to the defect-rich H–CeO2NWs on the GF surface, which acts as active sites and reduces the electrochemical polarization of the redox reaction. Moreover, the one-dimensional nature of H–CeO2NWs is favorable for the charge-transfer process and improves the accessibility, thus improving the electrode performance.

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Section: Resultsmentioning

confidence: 99%

Oxygen-Vacancy-Rich Cubic CeO₂ Nanowires as Catalysts for Vanadium Redox Flow Batteries

Bayeh

Lin

Chang

et al. 2020

ACS Sustainable Chem. Eng.

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“…81 From the thermodynamics point of view, to have the same current density at lower overpotential means better performance of the electrocatalyst because of less electrical energy consumption. In addition, η value at 10 mA cm −2 of the NiSe 2 /rGO-ST surpasses that of some recently reported HER catalysts in alkaline medium, for example, nickel diselenide (NiSe 2 ) anchored on carbon fiber paper (CFP) (145 mV), 82 iron-doping NiSe 2 nano wrinkles (145 mV), 83 copper-incorporated heterostructures of amorphous NiSe x /crystalline NiSe 2 (156.9 mV), 84 CNTs encapsulating P-doped NiSe 2 nanoparticles on carbon framework (95 mV), 85 hybrid nanosheet arrays NiSe 2 /CC-180 (133 mV), 86 NiO–NiSe 2 nanosheet-based heterostructures shelled titanium nitride array (115 mV), 87 NiSe 2 /Ni 2 P@FeP interface nanosheets (113 mV). 88 To the best of our knowledge, CoSeO 3 /rGO-ST and FeSe 2 /rGO-ST catalyzing HER have been rarely reported in the literature.…”

Section: Resultsmentioning

confidence: 68%

Selenium-transition metal supported on a mixture of reduced graphene oxide and silica template for water splitting

et al. 2023

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“…showed good electrochemical performance for HER [25]. Additionally, Figure 3 reveals that iron-doped tungsten oxide nanoplate supported on rGO nanocomposite (Fe-WOxP/rGO) exhibited excellent electrocatalytic activity towards HER due to the coupled synergic effect between many oxygen vacancies formation on tungsten oxide in the nanoplate structure of Fe-WOxP and rGO nanosheet [26]. Moreover, monodisperse…”

Section: Graphene-based Composite Catalystsmentioning

confidence: 99%

Graphene-Based Catalysts for Hydrogen Evolution Reaction

Regent¹,

Luis-Sunga²,

Pastor³

et al. 2019

Preprint

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Developing sustainable and renewable energy sources is critical as higher and higher global energy and environmental challenges arise. Hydrogen has the highest mass/energy density of any fuel and is considered one of the best sources of clean energy. Water splitting is regarded as one of the most promising solutions for hydrogen production on a large scale. Highly efficient, durable and cost-effective catalysts for hydrogen evolution reaction (HER) are critical in the realization of this goal. Among many materials proposed, graphene-based materials offer some unique properties for HER catalysis. In this review, we present recent progress on development of graphene-based electrocatalysts toward HER throughout the past few years.

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Selenium vacancy and phosphorus-doping-induced phase transition engineering of cobalt diselenide as bi-functional catalyst for water electrolysis

Cited by 9 publications

References 60 publications

Oxygen-Vacancy-Rich Cubic CeO₂ Nanowires as Catalysts for Vanadium Redox Flow Batteries

Oxygen-Vacancy-Rich Cubic CeO₂ Nanowires as Catalysts for Vanadium Redox Flow Batteries

Selenium-transition metal supported on a mixture of reduced graphene oxide and silica template for water splitting

Graphene-Based Catalysts for Hydrogen Evolution Reaction

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Selenium vacancy and phosphorus-doping-induced phase transition engineering of cobalt diselenide as bi-functional catalyst for water electrolysis

Cited by 9 publications

References 60 publications

Oxygen-Vacancy-Rich Cubic CeO2 Nanowires as Catalysts for Vanadium Redox Flow Batteries

Oxygen-Vacancy-Rich Cubic CeO2 Nanowires as Catalysts for Vanadium Redox Flow Batteries

Selenium-transition metal supported on a mixture of reduced graphene oxide and silica template for water splitting

Graphene-Based Catalysts for Hydrogen Evolution Reaction

Contact Info

Product

Resources

About

Oxygen-Vacancy-Rich Cubic CeO₂ Nanowires as Catalysts for Vanadium Redox Flow Batteries

Oxygen-Vacancy-Rich Cubic CeO₂ Nanowires as Catalysts for Vanadium Redox Flow Batteries