 The researchers have developed a new type of electrocatalyst composed of a co-9S8 slash MOS-2 heterojunction. They found that this combination of materials has higher hydrogen evolution activity than other similar catalysts, which they attribute to the electron transfer between the two components, as well as the movement of the D-band center of the transition metal and optimization of the adsorption of water molecules and hydrogen. This article was authored by Lily Zhang, Jitang Zhang, Aijiao Su, and others.