Co-Ni-Mo phosphides hierarchical nanoarrays as bifunctional electrocatalysts for excellent overall water splitting

Jin, Jing; Chen, Feng; Feng, Yu-Fei; Zhou, Jianqiu; Lei, Wenwei; Gao, Faming

doi:10.1016/j.fuel.2022.126131

Cited by 24 publications

(8 citation statements)

References 57 publications

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“…30 Moreover, the insertion of metal oxide V during electrocatalysis enhances the electron transport capacity. 31 In addition, RuNiVO electrocatalysts exhibit low OER and HER overpotentials of 224 and 136 mV, respectively, and after long stability test (48 h), the catalyst also showed superior stability with negligible current losses. Density functional theory (DFT) calculation results confirm that the charge density strength in RuNiVO can enhance the catalytic activity of OER.…”

Section: ■ Introductionmentioning

confidence: 98%

“…By comparing the electronic energetic structure and elemental valence changes, it is clear that the addition of H x V 2 O 5 will shift the characteristic peaks to different extent, which thus affect the activity of the catalysts . Moreover, the insertion of metal oxide V during electrocatalysis enhances the electron transport capacity . In addition, RuNiVO electrocatalysts exhibit low OER and HER overpotentials of 224 and 136 mV, respectively, and after long stability test (48 h), the catalyst also showed superior stability with negligible current losses.…”

Section: Introductionmentioning

confidence: 99%

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Theoretical Revelation and Experimental Verification Synergistic Electronic Interaction of V-Doped RuNi as an Efficient Bifunctional Electrocatalyst for Overall Water Splitting

Zhang,

Deng,

Weng

et al. 2023

ACS Sustainable Chem. Eng.

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As an advanced technology in the preparation of a sustainable and clean hydrogen energy source, electrolysis of water splitting has attracted more and more research attention. Water electrolysis is an important step toward hydrogen economy on account of the high efficiency and environmentally friendly. However, developing bifunctional electrocatalysts possessed with low cost, high activity, and everlasting durability to simultaneously promote bulk water cleavage is imminent. In this work, transition metal oxide (TMOs) H x V2O5 was anchored on the RuNi bimetallic catalyst by hydrothermal method to form a porous granular catalyst, which greatly improved the electron transfer ability. Due to the increased contact surface between RuVONi and electrolyte of this structural catalyst, the amounts of active sites are ferreted out. In-depth experimental results and DFT calculations show optimized molar ratio RuNiVO sample has superior electron transport ability compared with RuNiV, RuNiMoO, and RuNiMo, and exhibits significant electrocatalytic performance at 1.0 M KOH. Under the current density of 10 mA cm–2, RuNiVO electrocatalysts show OER and HER overpotentials of 224 and 136 mV and have superior durability. The density functional theory (DFT) results indicate that the insertion V metal oxide may optimize ΔG with higher charge density intensity, thereby improving its OER and HER activities.

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Section: ■ Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Theoretical Revelation and Experimental Verification Synergistic Electronic Interaction of V-Doped RuNi as an Efficient Bifunctional Electrocatalyst for Overall Water Splitting

Zhang,

Deng,

Weng

et al. 2023

ACS Sustainable Chem. Eng.

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“…Some HER catalysts, such as metal oxides, 6–9 hydroxides, 10–12 phosphides 13–15 and sulfides, 16–18 have been developed to replace the expensive noble metals. 19 Among them, perovskite oxides with the typical ABO 3 structure are considered highly promising electrocatalysts, where A is generally a rare earth or alkali metal ion and B is a transition metal.…”

Section: Introductionmentioning

confidence: 99%

Efficient perovskite oxide@CdS composite catalysts for hydrogen production from oilfield wastewater electrolysis

Cao,

Li,

et al. 2024

New J. Chem.

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“…The composite materials with heterostructures provide plentiful active sites as well as integrate the merits of each component. In addition, the electronegativity difference of each component in the composite leads to the redistribution of electrons and changes in the electronic structure, which is imperative for obtaining high catalytic activity. , Transition metal phosphides (TMPs) are receiving increasing attention relying on their unique physical as well as chemical properties . It was reported that the phosphorus in TMPs served as a basic site for proton capture to boost hydrogen adsorption.…”

Section: Introductionmentioning

confidence: 99%

Co–Ni–P Nanoneedle Array Heterostructures with Built-In Potential for Selective Methanol Oxidation Coupled with H₂ Evolution

Yue

Sun

Huo

et al. 2023

ACS Appl. Nano Mater.

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Electro-oxidation of methanol (MOR) coupling with the hydrogen evolution reaction (HER) is a meaningful innovation strategy to realize energy-saving production of H 2 and value-added chemical products. In this study, a self-supported cobalt nickel bimetallic phosphide nanoneedle array (Co−Ni−P/NF) is designed to realize excellent bifunctional activity for the HER and MOR. Studies prove that the p−n heterogeneous junctions formed in between nickel phosphide and cobalt phosphide promote the accumulation of electrons on CoP, favoring the absorption of H* and boosting HER activity, whereas the increased MOR activity is due to in situ generated holes in Ni 2 P. Benefiting from the optimized interface/surface electronic structures, the Co− Ni−P/NF produces 100 mA cm −2 current density in a two-electrode electrolyzer with a significantly low cell voltage of 1.45 V. The faradic efficiencies up to 100% for both the HER and MOR are obtained, showing the excellent bifunctional catalytic activity of Co−Ni−P/NF nanoneedle arrays. This work throws light on developing novel bifunctional electrocatalysts for value-added chemical production and highly efficient hydrogen evolution.

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Co-Ni-Mo phosphides hierarchical nanoarrays as bifunctional electrocatalysts for excellent overall water splitting

Cited by 24 publications

References 57 publications

Theoretical Revelation and Experimental Verification Synergistic Electronic Interaction of V-Doped RuNi as an Efficient Bifunctional Electrocatalyst for Overall Water Splitting

Theoretical Revelation and Experimental Verification Synergistic Electronic Interaction of V-Doped RuNi as an Efficient Bifunctional Electrocatalyst for Overall Water Splitting

Efficient perovskite oxide@CdS composite catalysts for hydrogen production from oilfield wastewater electrolysis

Co–Ni–P Nanoneedle Array Heterostructures with Built-In Potential for Selective Methanol Oxidation Coupled with H₂ Evolution

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Co-Ni-Mo phosphides hierarchical nanoarrays as bifunctional electrocatalysts for excellent overall water splitting

Cited by 24 publications

References 57 publications

Theoretical Revelation and Experimental Verification Synergistic Electronic Interaction of V-Doped RuNi as an Efficient Bifunctional Electrocatalyst for Overall Water Splitting

Theoretical Revelation and Experimental Verification Synergistic Electronic Interaction of V-Doped RuNi as an Efficient Bifunctional Electrocatalyst for Overall Water Splitting

Efficient perovskite oxide@CdS composite catalysts for hydrogen production from oilfield wastewater electrolysis

Co–Ni–P Nanoneedle Array Heterostructures with Built-In Potential for Selective Methanol Oxidation Coupled with H2 Evolution

Contact Info

Product

Resources

About

Co–Ni–P Nanoneedle Array Heterostructures with Built-In Potential for Selective Methanol Oxidation Coupled with H₂ Evolution