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• W4387380084 abstract "Abstract A major challenge with water splitting technology is to develop highly active and stable electrocatalysts for the oxygen evolution reaction (OER). IrO 2 – based electrocatalysts are one of the most active electrocatalysts for proton exchange membrane (PEM) electrolysers, due to their excellent activity for the OER in acidic conditions. However, IrO 2 often suffers from dissolution during electrolysis due to phase transitions into more soluble forms. Herein, a range of electrodeposited IrO 2 films annealed to different temperatures of up to 500 ° C are prepared to understand the influence that crystalline/amorphous interfaces have on performance during accelerated degradation tests in concentrated acidic solutions. This study showed that an IrO 2 film annealed at 300 °C exhibited the highest catalytic activity with a low overpotential of 150 mV at 10 mA cm −2 , the smallest Tafel slope of 51 mV dec −1 , with a less progressive decay in activity over a period of 8 h of accelerated degradation testing. This contrasts with both fully amorphous or more crystalline IrO 2 films that decayed much more rapidly within 1 h of testing indicating the role that amorphous/crystalline regions have on OER performance." @default.
• W4387380084 created "2023-10-06" @default.
• W4387380084 creator A5003310434 @default.
• W4387380084 creator A5034895983 @default.
• W4387380084 creator A5050672687 @default.
• W4387380084 date "2023-10-05" @default.
• W4387380084 modified "2023-10-16" @default.
• W4387380084 title "Investigating the Influence of Amorphous/Crystalline Interfaces on the Stability of IrO₂ for the Oxygen Evolution Reaction in Acidic Electrolyte" @default.
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