Ex-situ electrochemical characterization of iro2 synthesized by a modified Adams fusion method for the oxygen evolution reaction
Date
2019Author
Felix, Cecil
Bladergroen, Bernard J.
Linkov, Vladimir
Metadata
Show full item recordAbstract
The development of highly stable and active electrocatalysts for the oxygen evolution
reaction (OER) has attracted significant research interest. IrO2 is known to show good stability
during the OER however it is not known to be the most active. Thus, significant research has
been dedicated to enhance the activity of IrO2 toward the OER. In this study, IrO2 catalysts were
synthesized using a modified Adams fusion method. The Adams fusion method is simple and
is shown to directly produce nano-sized metal oxides. The effect of the Ir precursor salt to the
NaNO3 ratio and the fusion temperature on the OER activity of the synthesized IrO2 electrocatalysts,
was investigated. The OER activity and durability of the IrO2 electrocatalysts were evaluated ex-situ
via cyclic voltammetry (CV), chronopotentiometry (CP), electrochemical impedance spectroscopy
(EIS) and linear sweep voltammetry (LSV).