Constructing the coordination environment of Se–O in Cu2−xSe for electrochemical hydrogen evolution†
Abstract
In this work, a Se–O bond is introduced by a simple oxidation method to realize the structural transformation from Cu2−xSe to Cu2O(SeO3) for enhanced electrocatalytic hydrogen evolution reaction (HER). The experiment and calculation results showed that Cu2O(SeO3) facilitated charge transfer and possessed a small barrier during the HER.