Work

Enhancing Activity of Oxygen Evolution Reaction on Fe/CoOOH/NF Electrocatalysts: Effect of Fe Doping

Year: 2026

Type: article

Abstract: ABSTRACT Exploring low‐cost and high‐efficiency electrocatalysts for oxygen evolution reaction (OER) is of great significance. In this work, a series of Fe x /CoOOH‐ y /NF electrocatalysts are fabricated by etching Co‐MOFs/NF with Fe(NO 3 ) 3 solution. The doping of Fe makes a great contribution to the transformation of CoO x to CoOOH species. With the increase of etching time and Fe(NO 3 ) 3 concentration, the increased Fe doping leads to an increased content of chemical adsorbed oxygen (OH) but a decline of Co 3+ species. The Fe 1.0 /CoOOH‐18/NF electrocatalyst with a moderate Fe doping exhibits an enhanced OER activity, with an overpotential of 249 mV, a Tafel slope of 47.4 mV dec −1 , and good stability. In situ Raman demonstrates that the abundant Co 3+ species together with the enhanced content of OH greatly facilitates the OER process. This study offers an effective strategy for design of highly efficient OER electrocatalysts.

Source: EcoEnergy

DOI: 10.1002/ece2.70128

Authors: Hongyu Gong, Wanghuan Duan, Limei He, Lexin Zhang, Yaru Zhang, Tifeng Jiao

Institutions: Yanshan University, State Key Laboratory of Metastable Materials Science and Technology

Language: English

Topic: Electrocatalysts for Energy Conversion

Subfield: Renewable Energy, Sustainability and the Environment

Field: Energy

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: diamond

Funders: National Natural Science Foundation of China, Natural Science Foundation of Hebei Province