Recent progress in Cu-based electrocatalysts for CO2 reduction

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 159210 - 159210

Published: Jan. 1, 2025

Language: Английский

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Formamide-assisted synthesis of phosphate-intercalated Ni(OH)2/NiOOH electrode for boosting oxygen evolution reaction

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 689, P. 137209 - 137209

Published: March 1, 2025

Language: Английский

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Optimized Bubble Dynamics of 3D-Printed Electrodes for Enhanced Water Splitting

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 26, 2025

Gas evolution plays an important role in water electrolysis, as sluggish bubble dynamics lead to blockage of active sites, reduced catalytic performance, and even detachment the catalysts. In this work, we present a strategy fabricate highly rough three-dimensional (3D)-printed Ni (3DPNi) electrodes with ordered flow channel structures, achieving exceptional performance through enhanced transport dynamics. The surfaces enhance hydrophilic aerophobic properties, suppressing coalescence accelerating structures 3DPNi serve efficient channels effectively prevent trapping, facilitating rapid Collectively, these features optimize dynamics, significantly boosting for electrolysis. Computational fluid simulations visual experiments validate improved When coated NiFe-LDH (NiFe-LDH/3DPNi), low overpotential 238 mV is required deliver 100 mA cm-2 OER. overall splitting, NiFe-LDH/3DPNi || Pt plate setup requires cell voltage 1.86 V achieve 1 A demonstrates excellent stability over h at current density, indicating strong potential practical applications.

Language: Английский

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Recent Progress in the Design and Application of Strong Metal–Support Interactions in Electrocatalysis

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: March 4, 2025

The strong metal-support interaction (SMSI) in supported metal catalysts represents a crucial factor the design of highly efficient heterogeneous catalysts. This can modify surface adsorption state, electronic structure, and coordination environment metal, altering interface structure catalyst. These changes serve to enhance catalyst's activity, stability, reaction selectivity. In recent years, multitude researchers have uncovered range novel SMSI types induction methods including oxidized (O-SMSI), adsorbent-mediated (A-SMSI), wet chemically induced (Wc-SMSI). Consequently, systematic critical review is desirable illuminate latest advancements deliberate its application within article provides characteristics various most methods. It concluded that significantly contributes enhancing catalyst selectivity, increasing catalytic activity. Furthermore, this paper offers comprehensive extensive electrocatalysis hydrogen evolution (HER), oxygen (OER), reduction (ORR), carbon dioxide (CO2RR). Finally, opportunities challenges faces future are discussed.

Language: Английский

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Ni Single Atoms/Fe₃N Nanoparticles Supported by N‐Doped Carbon Hollow Nanododecahedras with Nanotubes on the Surface for Efficient Electro‐Reduction of CO₂ to CO

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 23, 2025

Abstract The transition metal single atoms (SAs)‐based catalysts with M‐N X coordination environment have shown excellent performance in electrocatalytic reduction of CO 2 , and they received extensive attention recent years. However, the presence SAs makes it very difficult to efficiently improve environment. In this paper, a method direct high‐temperature pyrolysis carbonization ZIF‐8 adsorbed Ni 2+ Fe ions is reported for synthesis 3 N nanoparticles (NPs) supported by N‐doped carbon (NC) hollow nanododecahedras (HNDs) nanotubes (NTs) on surface (Ni SAs/Fe NPs@NC‐HNDs‐NTs). synergistic effect between NPs can obviously proton‐coupled electron transfer step reaction promotes process CO. fabricated NPs@NC‐HNDs‐NTs exhibits high selectivity up 94% potential range −0.41–−0.81 V versus Reversible Hydrogen Electrode (vs RHE), an optimal Faraday efficiency (FE ) ≈97.31% at −0.68 RHE) theoretical calculation results, due non‐bonding synergy NPs, free energy * COOH formation greatly reduced adsorption improved, which will promote conversion intermediates accelerate electro‐reduction . This work provide new constructing mutually optimized catalytic RR complementarity dual active sites.

Language: Английский

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Recent advances in functionalizing ZIFs and their derived carbon materials towards electrocatalytic water splitting

Nano Energy, Journal Year: 2025, Volume and Issue: unknown, P. 110727 - 110727

Published: Jan. 1, 2025

Language: Английский

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In Situ Construction of IrO_x Nanofilm on TiO_x for Boosting Low‐Ir Catalysis in Practical PEM Electrolyze

Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 10, 2025

Abstract Exploring low‐iridium (Ir) electrocatalysts for oxygen evolution reaction (OER) is exigent to promote the commercialization of proton electrolyte membrane water electrolyzers (PEMWEs). Herein, study presents a scalable and facile strategy in situ construct an IrO x nanofilm continuously coated on TiO support as efficient durable OER catalyst through one‐step annealing Ir‐salt‐adsorbed titanium‐based metal–organic frameworks (MOFs) precursor. The unique structure forms continuous p‐n junction interface, endowing strong interfacial electron transfer from also ensuring well‐connected conductive network anodic catalytic layer due dispersion . optimal requires low overpotential 233 mV at 10 mA cm −2 with 40‐fold com. 2 mass activity. assembled PEMWE shows cell voltage 1.762 V 1 A ≈220 h operation under start/shut‐down operation. Operando characterizations theoretical calculation reveal that not only reduces energy barrier dissociation deprotonation step *OOH boosting kinetics but prevents oxidation Ir sites form soluble species improves durability. This work offers new avenue rationally design synthesize low‐Ir application.

Language: Английский

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Electron Shuttling of Iron‐Oxygen‐Cobalt Bridging in Cobalt Assembled Iron Oxyhydroxide Catalyst Boosts the Urea Oxidation Stability and Activity

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 21, 2025

Abstract Iron (Fe)‐based materials hold great potential as urea oxidation reaction (UOR) catalysts, however, the deactivation of active Fe‐oxyhydroxide (FeOOH) species induced by its dissolution during catalytic process under high current densities is still significant challenge. Herein, cobalt (Co) assembled FeOOH constructed, and formation Iron‐Oxygen‐Cobalt (Fe‐O‐Co) bridging triggers electron transfer from Co to Fe sites. This shuttling induces low valence state sites in FeOOH. Co‐FeOOH catalyst achieves a density 1000 mA cm −2 at voltage merely 1.59 V, showing substantial improvement compared pure (1.97 V). Meanwhile, urea‐assisted anion exchange membrane electrolyzer, after 24 h continuous operation , fluctuation 12.4%, significantly lower than that (49.9%). The situ experiments theoretical calculations demonstrate Fe‐O‐Co endows suppressive Fe‐segregation, fast charge Fe(Co)OOH phase negative‐shifted d‐band center metal sites, boosting UOR stability activity.

Language: Английский

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Fe₂P/ZnS Heterostructures Supported on N‐Doped Porous Carbon as Efficient Oxygen Reduction Electrocatalysts for High‐Performance Zinc–Air Batteries

Small, Journal Year: 2025, Volume and Issue: unknown

Published: April 3, 2025

The development of oxygen reduction reaction (ORR) catalysts with high catalytic activity, stability, and low cost is great significance for the rechargeable zinc-air batteries (ZABs). Designing heterostructures within catalyst can regulate charge distribution to enhance electron transfer rate during process, optimize adsorption oxygen-containing intermediates, resulting in high-performance ORR catalysts. In this study, Fe2P/ZnS supported on N-doped porous carbon (Fe2P/ZnS@NC) are designed fabricated through one-step synthesis via high-temperature pyrolysis. significantly conductivity carbon. electronic structure catalyst, thereby optimizing key intermediate *O at Fe site enhancing performance Fe2P/ZnS@NC, a half-wave potential 0.885 V. Fe2P/ZnS@NC-based ZABs show maximum power density 148.5 mW cm-2, an energy 818.2 mA h g-1, excellent cycling stability (≈800 h), surpassing 40 wt.% Pt/C-based ZABs. above results that play role improving

Language: Английский

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Self-Supporting 3D Cross-linked NiFe-Co/NC@NiMoO4 Electrode for Efficient Overall Water Splitting and Rechargeable Zn-air Batteries

Applied Catalysis B Environment and Energy, Journal Year: 2025, Volume and Issue: unknown, P. 125406 - 125406

Published: April 1, 2025

Language: Английский

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