Urea-formaldehyde Resin Derived P-doped Tungsten Carbide on N-carbon Sheets(P-W2C@NC)as All pH HER Catalyst

Abstract

： Tungsten carbide has attracted extensive attention in the field of electrocatalytic hydrogen evolution due to its uni(|ue Pt like electronic structure and catalytic performance. He*teroatom doping and the constmction of nano­ materials with high specific suiface area are important strategies to further improve their propeilies. In this study, the heteroatom doped tungsten carbide with high specific surface area was prepared by controlled carbonization of u-rea formaldehyde resin with rich polar func tional groups as the substrate and polyoxonietalate clusters uniformly sup­ ported on its branched chain skeleton ( P - W - , C @ N C ) all j)H hydrogen evolution catalyst. The B K T specific surface area of the material is 136 • g _l. X R D , X P S , S E M and T E M results show that the catalyst is composed of tung­ sten carbide nanoparticles with phosphorus eloping and a thin nitrogen doped carbon layer coated oil the surface of tungsten carl)ide particles. In 0.5 mol/L sulfuric acid, 1 mol/L potassium hydroxide and 0.1 niol/L sulfuric acid buffer solution, the current density of 10 m A • c m " 2 can I)e achieved only by over potential of 83, 63 and 179 m V respectively, and this catalyst have long-term catalytic stability.