Cerium oxide modified iridium nanorods for highly efficient electrochemical water splitting

An Ir/CeO₂ composite catalyst with Ir nanorods (NRs) on amorphous CeO₂ was synthesized through a facile one-pot hydrothermal method, which shows excellent activity towards hydrogen evolution and oxygen evolution in alkaline media, even superior to the performance of commercial Pt/C, IrO₂ and RuO₂ catalysts. The enhanced performance could be attributed to the interfacial electron synergistic effect between Ir and CeO₂.