Heterostructured Mo‐Doped CoP on MXene Supports Enhanced the Alkaline Hydrogen Evolution Activity

The development of safe, efficient, and non-noble-metal electrocatalysts is a promising approach for hydrogen energy production. However, due to low electrical conductivity and weak stability, non-noble metal catalysts for HER are significantly limited in practice. Here, a method for low-cost catalysts was reported for synthesizing Mo-CoP/Ti3C2Tx composites in which Mo-doped CoP materials were facilely grown on the surface of Ti3C2Tx MXene. The introduction of MXene and the doping of Mo promoted electron transfer and increased the active sites compared with CoP. As HER electrocatalysts, the Mo-CoP/Ti3C2Tx materials exhibited a good HER activity with a low overpotential of only 117 mV. What's more, these catalysts had shown excellent electron conductivity, fast catalytic dynamics, and a boosted electrochemical active surface. Suitable synthetic ratios were obtained by optimizing the MXene substrate and the Mo doping amount. This work provided a new guide for the design and exploration of MXene based electrocatalysts.