Sustainable Hydrogen Generation Facilitated through Ethylene Glycol Oxidation in Fresh/Seawater with Cobalt- and Iron-Based Fluorinated Nanosheets

Energy & Fuels, Journal Year: 2024, Volume and Issue: 38(22), P. 22393 - 22401

Published: Nov. 5, 2024

Replacing the kinetically sluggish and energy-intensive oxygen evolution reaction (OER) at anode with oxidation of more thermodynamically favorable small organic molecules is a promising strategy for boosting hydrogen production. This study focuses on sustainable generation cathode facilitated by ethylene glycol (EGOR) anode, coupled production value-added formate. For this, we designed deposited cobalt- iron-based fluorinated two-dimensional (2D)-nanosheets (2D-CoFe@OF) through straightforward hydrothermal method onto nickel foam substrate (NF). The resulting 2D-CoFe@OF/NF exhibits an anodic potential that 100 mV lower in 0.5 M EG-added 1.0 KOH electrolyte to achieve benchmark electrolysis current density 10 mA cm–2, compared pure electrolyte. Additionally, assembling two identical 2D-CoFe@OF/NF||2D-CoFe@OF/NF electrode-based electrolyzers resulted 150 reduction operating cell voltage when electrolyzing particularly OER was replaced EGOR, thereby demonstrating significant improvement energy efficiency. Under this condition, electrolyzer demonstrated nearly 100% Faradaic efficiency (HER). Furthermore, practical application system studied EG-seawater suggests its replace freshwater abundant seawater, expanding horizon generation. study, thus, highlights 2D-CoFe@OF nanosheets EGOR advancing green technology toward future.

Language: Английский

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Boosting the catalytic performance of spinel sulphides by incorporating g-C3N4 for enhanced oxygen evolution reaction (OER)

Diamond and Related Materials, Journal Year: 2025, Volume and Issue: 153, P. 111980 - 111980

Published: Jan. 13, 2025

Language: Английский

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Unleashing Potential of BNiO-300 as a Superior Electrocatalyst for Overall Water Splitting

Energy & Fuels, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 28, 2025

Language: Английский

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A Super‐Chlorophobic Yet Weak‐Reconstructed Electrocatalyst by Fluorination Engineering toward Chlorine Oxidation‐Free and High‐Stability Seawater Electrolysis

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

Published: Jan. 28, 2025

Abstract Direct seawater electrolysis is key for achieving sustainable green‐hydrogen production and transitioning toward a decarbonized energy system. However, its performance limited by significant challenges, mainly catalyst instability, which caused excessive reconstruction, low catalytic activity, aggressive chlorine‐corrosion. Herein, high‐electronegativity F introduced into NiFe layered double‐hydroxide (F‐NiFe‐LDH) through fluorination engineering to induce electron‐deficient regions around Ni, thus creating abundant intrinsic high‐valence Ni sites. Correspondingly, the features of weak reconstruction accompanied high stability, chlorophobic surface, high‐activity lattice oxygen are produced on F‐NiFe‐LDH, confirmed detailedly experiment theory. Consequently, F‐NiFe‐LDH exhibits superior evolution reaction (OER) activity with overpotentials 306 375 mV reach 500 mA cm −2 at alkaline simulated seawater, respectively. Also, it demonstrates chlorine‐corrosion resistance, along ultra‐stability over 1000 h without degradation, structural collapse, or chlorine oxidation reaction. Furthermore, an anion exchange membrane electrolyzer assembled anode shows consumption only 4.87 kWh Nm −3 hydrogen production. This work provides inspiration designing corrosion‐resistance electrocatalysts aimed oxidation‐free electrolysis, simultaneously achieve stability OER activity.

Language: Английский

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Self-grown photocatalytic metal-organic frameworks on electrocatalytic NiFe layered double hydroxides as bifunctional photoelectrocatalyst for efficient overall water splitting

Journal of Power Sources, Journal Year: 2025, Volume and Issue: 633, P. 236398 - 236398

Published: Feb. 4, 2025

Language: Английский

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Study of magnetism and electrocatalytic properties in perovskite DyCrO3

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 178934 - 178934

Published: Jan. 1, 2025

Language: Английский

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Heterostructure engineering of a N-doped NiMoO4 two-phase electrocatalyst for industrial large-scale synthesis of 2, 5-furan dicarboxylic acid

New Journal of Chemistry, Journal Year: 2025, Volume and Issue: 49(8), P. 3218 - 3226

Published: Jan. 1, 2025

In this work, we construct a N-doped α,β-NiMoO 4 electrode for enhancing the selective electrooxidation of 5-hydroxymethylfurfural (HMF) to 2,5-furan dicarboxylic acid (FDCA).

Language: Английский

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Sulfidation adjust the valence states of metal ions enhancing alkaline seawater OER catalytic activity and stability for PBA−derived self–supporting NiFe sulfide

Materials Science in Semiconductor Processing, Journal Year: 2025, Volume and Issue: 192, P. 109396 - 109396

Published: Feb. 19, 2025

Language: Английский

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Wide-area tip-like effect boosting electrocatalytic sulfion oxidation for energy-efficient hydrogen production in seawater electrolysis

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161611 - 161611

Published: March 1, 2025

Language: Английский

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Sulfhydryl group modified layered double hydroxide accelerates the formation of NiOOH active phase for enhanced urea oxidation reaction

Journal of Power Sources, Journal Year: 2025, Volume and Issue: 641, P. 236834 - 236834

Published: March 21, 2025

Language: Английский

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