fig5

Figure 5. (A) Structure diagram and (B) Gibbs free energy profiles of UOR on NiSe₂ and NiSe₂-Ni₃Se₄^[65]; Gibbs free energy profiles of UOR on the surface of (C) Ni oxyhydroxide and (D) V-dopant and O-vacancy contained Ni oxyhydroxide^[66]. UOR: Urea oxidation reaction.