 This research has developed a novel approach to designing and constructing bifunctional electrocatalysts for overall water splitting. By creating heterogeneous interfaces between two different materials, the researchers were able to increase the number of electroactive sites on the catalyst surface and improve its performance. These results suggest that this method could be used to develop more efficient and cost-effective catalysts for water splitting applications. This article was authored by Jing Huang Lin, Ping Cheng Wang, Hao Han Wang, and others.