Boosting OER performance of IrO2 in acid via urchin-like hierarchical-structure design

摘要

Urchin-like hierarchical IrO2 nanostructures, which are obtained by a surfactant-free, wet-chemical approach, show boosted OER performance in acid with an overpotential of 260 mV @10 mA cm(geo)(-2) under optimal pocessing conditions. The overpotential @10 mA cm(geo)(-2) can be kept below 285 mV for over 30 hours.