Dual‐Driven Activation of High‐Valence States in Prussian Blue Analogues Via Graphene‐Quantum Dots and Ozone‐Induced Surface Restructuring for Superior Hydrogen Evolution Electrocatalyst

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

Published: Jan. 2, 2025

Abstract Electrochemical water splitting is a pivotal process for sustainable hydrogen energy production, relying on efficient evolution reaction (HER) catalysts, particularly in acidic environments, where both high activity and durability are crucial. Despite the favorable kinetics of platinum (Pt)‐based materials, their performance hindered under harsh conditions, driving search alternatives. Due to unique structural characteristic, Prussian blue analogs (PBAs) emerge as attractive candidates designing HER electrocatalysts. However, modulating properties functionalities crucial overcome conductivity issue. Herein, reconfiguration strategy dual‐driven surface restructuring CoFe PBA involving graphene quantum dots (GQD) UV/ozone proposed. X‐ray absorption spectroscopy (XAS) analysis revealed that reconstruction plays role promoting high‐valence metal ions, effectively reducing charge transfer resistance—a key limitation HER. The optimized PBA/GQD‐UV exhibits remarkable electrocatalytic toward HER, with low overpotential 77 mV reach current density 10 mA cm −2 excellent 12 h an extremely 500 solution. This dual‐combination offering new pathway develop highly active

Language: Английский

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Livistona Chinensis Leaves Bioorganic Frame Derived Porous Carbon Material Containing Fe-Nx Active Site as Oxygen Reduction Electrocatalyst for Zinc-Air Batteries

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: unknown, P. 116391 - 116391

Published: March 1, 2025

Language: Английский

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Fe/Fe-Nx-based carbon nanotubes with isolated active sites by ionic-state mediated synthesizing for highly efficient ORR

Journal of Power Sources, Journal Year: 2024, Volume and Issue: 626, P. 235750 - 235750

Published: Nov. 1, 2024

Language: Английский

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