Synthesis of Co2P Nanoparticles Embedded N, P Co‐Doped Mesoporous Carbon via Molten Salt Process as Hydrogen Evolution Electrocatalyst under Alkaline Conditions

Abstract A molten salts strategy was developed to synthesize Co 2 P nanoparticles (NPs) embedded N, P co‐doped mesoporous carbon. No solvent was introduced in the synthesis process. Moreover, the common inorganic salts were utilized as the templates, which could be removed and recycled by water washing. The characterization results exhibited that the final products consisted of Co 2 P NPs and carbon. The amounts of the salts determined the porosities of the as‐obtained sample, which further effect the activities for electrocatalytic hydrogen evolution reaction (HER). The optimal sample of GUCo‐0.2NaCl showed the best HER performance among these as‐obtained electrocatalysts, including small Tafel slope and low overpotential.