Proton Exchange Membrane Water Splitting: Advances in Electrode Structure and Mass‐Charge Transport Optimization

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

Published: March 4, 2025

Abstract Proton exchange membrane water electrolysis (PEMWE) represents a promising technology for renewable hydrogen production. However, the large‐scale commercialization of PEMWE faces challenges due to need acid oxygen evolution reaction (OER) catalysts with long‐term stability and corrosion‐resistant electrode assemblies (MEA). This review thoroughly examines deactivation mechanisms acidic OER crucial factors affecting assembly instability in complex environments, including catalyst degradation, dynamic behavior at MEA triple‐phase boundary, equipment failures. Targeted solutions are proposed, improvements, optimized designs, operational strategies. Finally, highlights perspectives on strict activity/stability evaluation standards, situ/operando characteristics, practical electrolyzer optimization. These insights emphasize interrelationship between catalysts, MEAs, activity, stability, offering new guidance accelerating systems.

Language: Английский

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A review of redox-active polymers for selective electrochemical removal of uncharged organic pollutants from water

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: unknown, P. 115774 - 115774

Published: Feb. 1, 2025

Language: Английский

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Switchable Acidic Oxygen Evolution Mechanisms on Atomic Skin of Ruthenium Metallene Oxides

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 25, 2024

RuO2 has been considered as a promising, low-cost, and highly efficient catalyst in the acidic oxygen evolution reaction (OER). However, it suffers from poor stability due to inevitable involvement of lattice mechanism (LOM). Here, we construct unique metallene-based core-skin structure unveil that OER pathway atomic skin can be regulated LOM an adsorbate by altering core species metallene oxides metallenes. This switch is achieved without sacrificing number active sites, enabling Pd@RuO2 metallenes exhibit outstanding activity with low overpotential 189 mV at 10 mA cm–2, which 54 lower than counterpart PdO@RuO2 Additionally, they also robust negligible decay over 100 h 50 outperforming most reported RuO2-based catalysts. Multiple spectroscopic analyses theoretical calculations demonstrate Pd-metallene core, acting electron donor, increases migration energy subsurface atoms optimizes adsorption intermediates on Ru mechanism. Such offers novel way for tuning catalytic behaviors electrocatalysts.

Language: Английский

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Structural tuning and reconstruction of CeO2-coupled nickel selenides for robust water oxidation

Chinese Chemical Letters, Journal Year: 2025, Volume and Issue: unknown, P. 110888 - 110888

Published: Jan. 1, 2025

Language: Английский

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Tailoring Coordinated Steps with Ni-Substituted Co3o4 Asymmetric Active Unit for Durable and Efficient Acidic Water Oxidation

Published: Jan. 1, 2025

Language: Английский

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Interfacial Engineering of Bi3.64mo0.36o6.55/Ti3c2 Schottky Junctions Based on Work Function for Efficient Photoexcitation-Assisted Degradation of Antibiotics

Published: Jan. 1, 2025

Language: Английский

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Heterogeneous CoO/Co₃O₄ Nanostructures as Efficient Anodes for Hydrogen Generation via Acidic Water Electrolysis

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

Published: March 26, 2025

Language: Английский

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Efficient removal of organic pollutants by Metal–organic framework derived Co-N@C hollow multi-shell Nanoreactors: Size-Exclusion and confinement effect

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162227 - 162227

Published: April 1, 2025

Language: Английский

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Sub-4 nm Ru-RuO₂ Schottky Nanojunction as a Catalyst for Durable Acidic Water Oxidation

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: April 4, 2025

RuO2 with high intrinsic activity for water oxidation is a promising alternative to IrO2 in proton exchange membrane (PEM) electrolyzer, but it suffers from long-term stability issues due overoxidation. Here, we report sub-4 nm Ru-RuO2 Schottky nanojunction (Ru-RuO2-SN) prepared by microwave reaction that exhibits and both three-electrode systems PEM devices. The lattice strain charge transfer induced the metal-oxide SN increase work function of Ru-RuO2-SN, optimize local electronic structure, reduce desorption energy metal site oxygen-containing intermediates; as result, leads oxide path mechanism (OPM) inhibits excessive surface ruthenium. Ru-RuO2-SN requires only 165 mV overpotential obtain 10 mA·cm-2 1400 h without obvious degradation, achieving number (6.7 × 106) matching iridium-based catalysts. In electrolyzer an anode catalyst, 1.6 V needed reach 1.0 A·cm-2 shows at 100 1100 500 h. was analyzed density functional theory calculations. This reports durable, pure Ru-based water-oxidation catalyst provides new perspective development efficient

Language: Английский

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ZIF-L(Co)-derived NiCoFe LDH@ZIF-67 sheet-array for efficient and robust electrocatalytic seawater splitting

Colloids and Surfaces A Physicochemical and Engineering Aspects, Journal Year: 2025, Volume and Issue: unknown, P. 136855 - 136855

Published: April 1, 2025

Language: Английский

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