Customizing the water-scarce, zinc ion-rich Helmholtz plane of a zinc anode for Ah-scale Zn metal batteries

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(20), P. 7850 - 7859

Published: Jan. 1, 2024

By constructing a hydrogel film doped with an ionic liquid on Zn anode, water-scarce inner Helmholtz plane and ion-enriched outer is developed, which effectively enables stable zinc anode for Ah-scale metal batteries.

Language: Английский

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Synergy of Photogenerated Electrons and Holes toward Efficient Photocatalytic Urea Synthesis from CO₂ and N₂

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(32)

Published: June 3, 2024

Abstract Directly coupling N 2 and CO to synthesize urea by photocatalysis paves a sustainable route for synthesis, but its performance is limited the competition of photogenerated electrons between , as well underutilized holes. Herein, we report an efficient synthesis process involving holes in respectively converting over redox heterojunction consisting WO 3 Ni single‐atom‐decorated CdS (Ni 1 ‐CdS/WO ). For photocatalytic from pure water, attained yield rate 78 μM h −1 apparent quantum 0.15 % at 385 nm, which ranked among best reported. Mechanistic studies reveal that was converted into NO species ⋅OH radicals generated component, meanwhile, transformed *CO site electrons. The were further coupled form *OCNO intermediate, then gradually urea. This work emphasizes importance reasonably utilizing reduction reactions.

Language: Английский

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Pt_1.8Pd_0.2CuGa Intermetallic Nanocatalysts with Enhanced Methanol Oxidation Performance for Efficient Hybrid Seawater Electrolysis

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(31)

Published: May 14, 2024

Seawater electrolysis is a potentially cost-effective approach to green hydrogen production, but it currently faces substantial challenges for its high energy consumption and the interference of chlorine evolution reaction (ClER). Replacing energy-demanding oxygen with methanol oxidation (MOR) represents promising alternative, as MOR occurs at significantly low anodic potential, which cannot only reduce voltage needed also completely circumvents ClER. To this end, developing high-performance catalysts key. Herein, novel quaternary Pt

Language: Английский

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Phosphorous Incorporated PtNi Networks with Synergistic Directional Electron Transfer for Efficient and Durable Seawater Hydrogen Production

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 1, 2024

Abstract The abundant chloride ions in seawater, which poison and corrode electrode materials, are the main reason for low performance of Pt‐based catalysts toward hydrogen evolution reaction (HER) seawater. Coupling Pt with oxophilic transition metals can enhance activity electrocatalysts, but their long‐term stability is still unsatisfactory. Herein, a small number phosphorous atoms (from 1.2 to 5.9 at%) precisely incorporated into PtNi networks (P‐PtNi networks) via facile aqueous reduction strategy at room temperature. Experimental measurements theoretical calculations prove that P incorporation leads synergistic directional electron transfer from Ni Pt, resulting improved water dissociation kinetics, enhanced Cl – resistance facilitated adsorption. Consequently, P‐PtNi exhibit outstanding HER activities lower overpotential 37 mV 10 mA cm −2 an 8.5‐fold higher mass –0.07 V compared commercial Pt/C only slightly lowered potential after 120 h testing alkaline simulated Furthermore, show ultrahigh solar‐to‐hydrogen efficiency 15.2% solar cell‐driven production This work sheds new lights on design high‐performance nanomaterials practical applications seawater production.

Language: Английский

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Ultrasonically Deposited Boron‐Doped Silicon Decorated with Laser‐Generated Iridium Nanoparticles as Manufacturing Approach for OER Electrodes in PEM Water Electrolysis

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

Published: Jan. 13, 2025

Abstract The study introduces flexible and scalable manufacturing approach for electrodes utilizing boron‐doped silicon as conductive support iridium nanoparticles, addressing the challenges of cost scarcity associated wit noble catalysts oxygen evolution reaction (OER). Colloidal Ir nanoparticles are synthesized via pulsed‐laser ablation (≈4–7 nm) decorated on B‐doped Si (≈100 through electrostatic adsorption. Titanium substrates ultrasonically sprayed with Si:B – very low loading 12 wt.%. Crystalline phases (Ir(111), Ir(200)) observed known to enhance OER mechanism. Additionally, atom probe tomography confirms that particles contained 0.03‐0.5 at% boron throughout entire particle, while electrical permittivity through‐plane measurements reveal a positive impact conductivity nanocatalysts ultralow‐loaded catalyst coated Ti (0.12 mg cm −2 ), respectively. Rotating disk electrode results show pronounced oxidation peaks nanoparticles. Si:B‐Ir 4 nm exhibits highest turonover frequency (2.62 s⁻¹) competitive electrochemical surface area (25 m 2 g −1 ) compared 7 (0.96 s⁻¹; 37.5 black (0.24 5 ). overall analysis parameters highlights performant catalytic efficiency, balancing activity kinetics effectively.

Language: Английский

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Unlocking Atomic Degrees of Freedom in Liquid Metals for Accelerated Electrocatalytic Reactions

ACS Catalysis, Journal Year: 2025, Volume and Issue: unknown, P. 3505 - 3514

Published: Feb. 12, 2025

Language: Английский

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Selective electrocatalytic synthesis of urea using entangled iron porphyrins in covalent organic frameworks

Nature Synthesis, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 21, 2025

Language: Английский

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Spin Manipulation of Co sites in Co₉S₈/Nb₂CT_x Mott–Schottky Heterojunction for Boosting the Electrocatalytic Nitrogen Reduction Reaction

Advanced Science, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 3, 2024

Abstract Regulating the adsorption of an intermediate on electrocatalyst by manipulating electron spin state transition metal is great significance for promoting activation inert nitrogen molecules (N 2 ) during electrocatalytic reduction reaction (eNRR). However, achieving this remains challenging. Herein, a novel 2D/2D Mott–Schottky heterojunction, Co 9 S 8 /Nb CT x ‐P, developed as eNRR catalyst. This achieved through in situ growth cobalt sulfide (Co nanosheets over Nb MXene using solution plasma modification method. Transformation from low (t 2g 6 e g 1 to high 5 adjusting interface electronic structure and sulfur vacancy ‐P. The ability N optimized Co(II) with more unpaired electrons, significantly accelerating *N →*NNH kinetic process. ‐P exhibits NH 3 yield 62.62 µg h −1 mg cat. Faradaic efficiency (FE) 30.33% at −0.40 V versus reversible hydrogen electrode (RHE) 0.1 m HCl. Additionally, it achieves 41.47 FE 23.19% −0.60 RHE Na SO 4 . work demonstrates promising strategy constructing heterojunction electrocatalysts efficient eNRR.

Language: Английский

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Multifunctional Strategies of Advanced Electrocatalysts for Efficient Urea Synthesis

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 20, 2024

The electrochemical reduction of nitrogenous species (such as N

Language: Английский

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Synergy of Photogenerated Electrons and Holes toward Efficient Photocatalytic Urea Synthesis from CO₂ and N₂

Angewandte Chemie, Journal Year: 2024, Volume and Issue: 136(32)

Published: June 3, 2024

Abstract Directly coupling N 2 and CO to synthesize urea by photocatalysis paves a sustainable route for synthesis, but its performance is limited the competition of photogenerated electrons between , as well underutilized holes. Herein, we report an efficient synthesis process involving holes in respectively converting over redox heterojunction consisting WO 3 Ni single‐atom‐decorated CdS (Ni 1 ‐CdS/WO ). For photocatalytic from pure water, attained yield rate 78 μM h −1 apparent quantum 0.15 % at 385 nm, which ranked among best reported. Mechanistic studies reveal that was converted into NO species ⋅OH radicals generated component, meanwhile, transformed *CO site electrons. The were further coupled form *OCNO intermediate, then gradually urea. This work emphasizes importance reasonably utilizing reduction reactions.

Language: Английский

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