Impact of morphology and oxygen vacancy content in Ni, Fe co-doped ceria for efficient electrocatalyst based water splitting.

ABSTRACT: Designing a highly efficient, low-cost, sustainable electrocatalyst for the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) through water splitting is a current challenge for renewable energy technologies. This work presents a modified sol-gel route to prepare metal-ion(s) doped cerium oxide nanostructures as an efficient electrocatalyst for overall water splitting. Nickle (Ni) and iron (Fe) co-doping impacts the morphology in cerium oxide resulting in 5 nm nanoparticles with a mesoporous-like microstructure. The high level 20 mol% (1 : 1 ratio) of Ni + Fe bimetal-ion(s) doped CeO₂ shows excellent HER and OER activities compared to the monodoped Fe/Ni and pristine CeO₂. The co-doped catalysts required a low overpotential of 104 mV and 380 mV for

SUBMITTER: Mishra AK 

PROVIDER: S-EPMC11385549 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature