Reduced Graphene Oxide-Coated Iridium Oxide as a Catalyst for the Oxygen Evolution Reaction in Alkaline Water Electrolysis DOI Creative Commons

Shengyin Luo,

Ziqing Zuo,

Hong Sun

et al.

Molecules, Journal Year: 2025, Volume and Issue: 30(9), P. 2069 - 2069

Published: May 7, 2025

Producing hydrogen by water electrolysis has attracted significant attention as a potential renewable energy solution. In this work, catalyst with reduced graphene oxide (rGO) loaded on IrO2/TiO2 (called rGO/IrO2/TiO2) was designed for the catalytic oxygen evolution reaction (OER). The synthesized coating onto pretreated precursor, followed thermal treatment at 450 °C to achieve reduction and adhesion of substrate. support retained its intact sp2 carbon framework minor oxygen-containing functional groups, which enhanced electrical conductivity hydrophilicity. Benefiting from synergistic effect an rGO, IrO2, TiO2 matrix, rGO/IrO2/TiO2 only needed overpotentials 240 mV 320 reach 10 mA cm−2 100 in OER, along excellent stability over 50 h. Its morphology crystalline structure were characterized SEM XRD spectroscopy, electrochemical performance tested LSV analysis, EIS impedance spectrum, double-layer capacitance (Cdl) measurements. This work introduces innovative eco-friendly strategy constructing high-performance, functionalized Ir-based catalyst.

Language: Английский

Reduced Graphene Oxide-Coated Iridium Oxide as a Catalyst for the Oxygen Evolution Reaction in Alkaline Water Electrolysis DOI Creative Commons

Shengyin Luo,

Ziqing Zuo,

Hong Sun

et al.

Molecules, Journal Year: 2025, Volume and Issue: 30(9), P. 2069 - 2069

Published: May 7, 2025

Producing hydrogen by water electrolysis has attracted significant attention as a potential renewable energy solution. In this work, catalyst with reduced graphene oxide (rGO) loaded on IrO2/TiO2 (called rGO/IrO2/TiO2) was designed for the catalytic oxygen evolution reaction (OER). The synthesized coating onto pretreated precursor, followed thermal treatment at 450 °C to achieve reduction and adhesion of substrate. support retained its intact sp2 carbon framework minor oxygen-containing functional groups, which enhanced electrical conductivity hydrophilicity. Benefiting from synergistic effect an rGO, IrO2, TiO2 matrix, rGO/IrO2/TiO2 only needed overpotentials 240 mV 320 reach 10 mA cm−2 100 in OER, along excellent stability over 50 h. Its morphology crystalline structure were characterized SEM XRD spectroscopy, electrochemical performance tested LSV analysis, EIS impedance spectrum, double-layer capacitance (Cdl) measurements. This work introduces innovative eco-friendly strategy constructing high-performance, functionalized Ir-based catalyst.

Language: Английский

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