Electronic modulation and interface engineering via amorphous ceria for enhanced OER in NiMoO4 heterostructures

Abstract

Herein, we delved into the mechanism behind the enhanced OER activity of NiMoO₄ contributed by amorphous ceria. The in situ generated Ce⁴⁺–O–Ni species regulate the electronic structure, facilitate charge transfer and promote hydroxyl adsorption, thereby endowing the NiMoO₄@CeO_x with exceptional catalytic activity and stability.