Stimulate the hidden catalysis potential and exposure of nickel site in NiSe@CNTs result in ultra-high HER/OER activity and stability

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 330, P. 122641 - 122641

Published: March 15, 2023

Language: Английский

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Insights on Ni-based layered double hydroxides for electrochemical supercapacitors: Underlying aspects in rational design and structural evolution

Journal of Energy Storage, Journal Year: 2023, Volume and Issue: 72, P. 108305 - 108305

Published: July 12, 2023

Language: Английский

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Fe2O3/P-doped CoMoO4 electrocatalyst delivers efficient overall water splitting in alkaline media

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 346, P. 123741 - 123741

Published: Jan. 16, 2024

Language: Английский

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Pulsed laser interference patterning of transition‐metal carbides for stable alkaline water electrolysis kinetics

Carbon Energy, Journal Year: 2024, Volume and Issue: 6(5)

Published: Jan. 5, 2024

Abstract We investigated the role of metal atomization and solvent decomposition into reductive species carbon clusters in phase formation transition‐metal carbides (TMCs; namely, Co 3 C, Fe TiC, MoC) by pulsed laser ablation Co, Fe, Ti, Mo metals acetone. The interaction between s – p ‐orbitals d‐orbitals causes a redistribution valence structure through charge transfer, leading to surface defects as observed X‐ray photoelectron spectroscopy. These influence evolved TMCs, making them effective for hydrogen oxygen evolution reactions (HER OER) an alkaline medium. C with more affinity promoted CoO(OH) intermediates, electrochemical oxidation O 4 was captured via situ/operando Raman probes, increasing number active sites OER activity. MoC d‐vacancies exhibits strong binding, promoting HER kinetics, whereas TiC defect states trap carriers may hinder both activities. results show that assembled membrane‐less electrolyzer C∥Co MoC∥MoC electrodes requires ~2.01 1.99 V, respectively, deliver 10 mA cm − 2 excellent structural stability. In addition, ascertained synthesis mechanism unit‐cell packing relations will open up sustainable pathways obtaining highly stable electrocatalysts electrolyzers.

Language: Английский

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Low Rh doping accelerated HER/OER bifunctional catalytic activities of nanoflower-like Ni-Co sulfide for greatly boosting overall water splitting

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 677, P. 221 - 231

Published: Aug. 9, 2024

Language: Английский

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Electrocatalysts for the oxygen evolution reaction: mechanism, innovative strategies, and beyond

Materials Chemistry Frontiers, Journal Year: 2023, Volume and Issue: 7(20), P. 4833 - 4864

Published: Jan. 1, 2023

This review provides a comprehensive of recent advances in the design OER catalysts. Specifically, it focuses on kinetics and stability catalysts, catalytic mechanism innovative strategies.

Language: Английский

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Dual Doping of B and Fe Activated Lattice Oxygen Participation for Enhanced Oxygen Evolution Reaction Activity in Alkaline Freshwater and Seawater

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(37)

Published: May 6, 2024

Abstract The exploitation of highly activity oxygen evolution reaction (OER) electrocatalysts is critical for the application electrocatalytic water splitting. Triggering lattice mechanism (LOM) expected to provide a promising pathway overcome sluggish OER kinetics, however, effectively enhancing involvement remains challenging. In this study, fabrication B, Fe co‐doped CoP (B, Fe─CoP) nanofibers reported, which serve as efficient electrocatalyst through phosphorization and boronation treatment Fe‐doped Co 3 O 4 nanofibers. Experimental results combined with theoretical calculations reveal that simultaneous incorporation both B can more trigger participation in CoFe oxyhydroxides reconstructed from Fe─CoP compared incorporating only or Fe. Therefore, optimized exhibit superb low overpotentials 361 376 mV at 1000 mA cm −2 alkaline freshwater natural seawater, respectively. present work provides significant guidelines innovative design concepts development following LOM pathway.

Language: Английский

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Energy-saving hydrogen production by seawater electrolysis coupling tip-enhanced electric field promoted electrocatalytic sulfion oxidation

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: July 22, 2024

Abstract Hydrogen production by seawater electrolysis is significantly hindered high energy costs and undesirable detrimental chlorine chemistry in seawater. In this work, energy-saving hydrogen reported chlorine-free splitting coupling tip-enhanced electric field promoted electrocatalytic sulfion oxidation reaction. We present a bifunctional needle-like Co 3 S 4 catalyst grown on nickel foam with unique tip structure that enhances the kinetic rate improving current density region. The assembled hybrid electrolyzer combines thermodynamically favorable cathodic reduction can enable sustainable at of 100 mA cm −2 for up to 504 h. has potential scale-up industrial implementation electrolysis, which promising achieve economic efficiency environmental remediation.

Language: Английский

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Manipulating electron redistribution between iridium and Co₆Mo₆C bridging with a carbon layer leads to a significantly enhanced overall water splitting performance at industrial-level current density

Chemical Science, Journal Year: 2024, Volume and Issue: 15(30), P. 11890 - 11901

Published: Jan. 1, 2024

Ir nanoparticles on Co 6 Mo C nanofibers bridging with a carbon layer have been fabricated as efficient bifunctional electrocatalysts for water splitting, presenting ultrahigh electrocatalytic performance at ampere-level current density.

Language: Английский

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Rapid fabrication of FexNi2−xP4O12 and graphene hybrids as electrocatalyst for highly efficient oxygen evolution reaction

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 334, P. 122834 - 122834

Published: May 2, 2023

Language: Английский

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