Iridium nanospheres with high active site density as efficient OER electrocatalysts for proton exchange membrane water electrolyzers
Key Points
The study aims to evaluate the efficiency of iridium nanospheres as electrocatalysts in oxygen evolution reactions for water electrolyzers.
Porous iridium nanospheric structures were synthesized to provide high density of active sites.
Electrocatalytic performance was assessed through measurements of catalytic activity and stability during the oxygen evolution reaction.
Porous iridium nanospheres exhibited significantly lower catalytic energy barriers compared to traditional catalysts.
Improved oxygen desorption rates were observed, leading to enhanced catalytic activity and stability in the electrocatalytic process.
Abstract
Porous Ir NS provides abundant Ir sites and exposed IrO x active centers, which lower the catalytic energy barrier and promote oxygen desorption, thus improving catalytic activity and stability.