Fig. 6From: Defect and Doping Engineered Penta-graphene for Catalysis of Hydrogen Evolution ReactionTop views of electron charge density difference and Bader charges analysis for a C2-DOWN vacancy and P-doped PG with H adsorbed at the a C1, b C2-DOWN, c C2-DOWNn and d C2-UP sites. The isosurface level is 0.004 e/Bohr3. The yellow and blue colors represent charge accumulation and reduction, respectivelyBack to article page