Oxygen-vacancy-rich MOF-derived amorphous Fe–Co–Se–O electrocatalyst for boosting the alkaline oxygen evolution reaction

The Fe–Co–Se–O-300 has a low η 10 of 280 mV. EPR results show that the catalyst has numerous oxygen vacancies. In situ Raman results indicate that Se species are oxidized to SeO 3 2− , which is beneficial for OER performance through additional experiments.